Which water heater to choose: determining the best equipment + rating of models
Both a sudden shutdown of hot water in an apartment and its absence in suburban housing negatively affects our quality of life.Installing a water heater will help solve the utility issue. But which water heater to choose so that this device does not create additional problems later?
The article describes in detail the types of water heaters and classification characteristics that influence the choice. Recommendations are given that must be followed for safe operation of the equipment. To help the buyer, information is provided about the leading manufacturers in the segment and the TOP-18 best water heaters on the market.
The content of the article:
Varieties and classification characteristics
All household water heaters, based on the heating method, are divided into 2 types: storage and instantaneous.
Depending on the type of fuel used for heating, these devices can be powered by electricity or gas. They have different prices, designs, sizes and operating principles.
Specifics of storage water heaters
A structure consisting of a tank with a heating element inside, which gradually heats the entire volume of water in the container, is called a storage water heater.
If we look at a more detailed diagram, it contains the following elements:
- Frame. All internal parts of the device are hidden under it. For its manufacture, both expensive and cheaper materials are used. The highest price is for models with an aluminum body, followed by stainless steel, and the cheapest option is plastic.
- Thermal insulation. Prevents heat loss.The thicker its layer, the longer the optimal temperature of the water inside is maintained, the device more effectively performs the function of a thermos, and its operation is cheaper.
- Internal capacity of the water heater. It is made of metal, having a protective layer in the form of an enamel coating or a higher quality glass porcelain coating.
- Pipe for collecting heated water. Its layer, in accordance with the laws of physics, is located above the cold layer. For this reason, the sampling point is located at the top.
- Supply pipe. Through it, cold water from the system enters the tank.
- Anode. The material from which it is made contains a high percentage of magnesium. Designed to protect the heating element by attracting scale to itself; it settles not on the heating element, but on its surface.
- Heater. Includes 2 elements - heating element and thermostat. The first can be open or closed and is designed to heat water, and the second to control its temperature.
- Thermostat. Can automatically turn on and off the heating element when the set temperature is reached.
- Water heating sensor. Electronic or pointer. The latter shows only the approximate temperature, while the former, which is highly accurate, is included in more expensive models.
- Lid. Protects the user from electric shock.
Electric storage water heaters are effective devices for independently providing a home with hot water. They have high efficiency and consume a small amount of electricity. Thanks to the successful choosing an electric boiler you will always have a supply of hot water.
In garages and country houses where there is no running water, tankless water heaters powered by the electrical network are used. They are equipped with a thermal limiter, light indication, and temperature regulator. They are suitable for installation in rooms where the temperature is not lower than +1 degrees C and not higher than +40.
Tank inner lining
It is traditionally believed that a stainless steel tank is more reliable than a regular steel one. This is true, it’s not for nothing that manufacturers give a 10-year guarantee on them. You should know that these containers have a weak point - a seam that is susceptible to corrosion. In many models it is covered with a protective layer.
A good alternative to stainless steel is the enamel coating of a steel tank. Additives are added to the enamel to improve its properties. In elite models, glass-ceramic coating is used, silver and titanium ions are sprayed.
To apply these enamels, complex, expensive technology is used. Which of the listed water heater options will be better, everyone decides for themselves.
The silver-containing coating disinfects water, prevents corrosion, and prevents the formation of microcracks. The heat-resistant coating in the form of titanium spraying, obtained by nitriding titanium at temperatures above 1 thousand degrees C, has increased resistance to strong heating.
Most enamels used by manufacturers tend to repel scale.
Submersible and steatite heating elements in comparison
There are 2 types of heating elements in storage boilers - submersible or “wet” and steatite or “dry”. Units with the second type of heating elements are more reliable.
There is no contact of heating elements with water here, because they are placed in a special flask filled with quartz sand or oil. The steatite element has a longer service life, but also almost doubles the cost of the water heater.
A “wet” copper heating element is something like a boiler; it quickly becomes covered with scale, which reduces its thermal conductivity.
The “sacrificial” magnesium anode facilitates the fight against calcium salts deposited on the surface of the heating element. It works on the principle of galvanic interaction of conductors. The more electronegative magnesium accepts oxygen ions, thereby preventing the destruction of iron.
The scale deposited on the heating element, consisting of magnesium salts, has lower carbonate hardness and is distinguished by a looser structure. Such sediment can be removed mechanically. The service life of the electrode and tank body is reduced not only by scale, but also by suspended particles that scratch their surface. Installation will save you from these risks coarse filter.
The tank can contain either 1 heating element or more, up to 6 pieces. If you already have 2 heating elements, the boiler can be operated in the economical heating mode - PowerProf. If the boiler has a power of 2 kW, there is a choice between an economical mode with a consumption of approximately 800 W, a medium mode - 1.2 kW, or a maximum mode - all 2000 W.
The design of electric heating equipment provides the possibility replacing the heating element, which you can handle yourself, strictly following the instructions.
Advantages and disadvantages of the accumulative type
A storage water heater or boiler has such a significant advantage as low energy consumption. Its consumer powers are in the range of 0.9-6 kW.
The boiler operates from a single-phase network; it is possible to connect the unit both in a city apartment and in a rural house. The main thing is that there is a 220-230 V outlet. Water can be supplied to several points at once.
The boiler can store a large volume of water heated to 65-85 degrees C, periodically heating it. There is a large range of models with tanks capable of holding from 10 to 300 liters. When consumed, hot water enters the mixer, and if necessary, it is brought to the desired temperature by diluting it with cold water.
The thermal insulation layer allows for minimal heat loss. Usually they do not exceed 0.5 degrees C in 1 hour. In models in which polyurethane foam is used as a thermal insulation material, placed between the tank body and a layer of anti-corrosion coating, the temperature per day decreases by only 10 degrees.
Unprincipled for connecting a storage water heater There is also the issue of pressure in the water line. There are units that operate only from the city network with a pressure of 6-7 atm, but there are also those that will operate even at a pressure of 1 atm.
This makes it possible to use them in dachas and country houses, where housing is provided with water from a well using an individual pumping station.
The disadvantages include sometimes the lengthy process of heating water. In some cases, it takes about 8 hours for the water to reach the set temperature. This depends on the capacity of the tank and the power of the heating element. For some users, the relatively large dimensions are unacceptable, making it impossible to install the unit in some rooms.
The service life of equipment is affected by water quality. If it is very hard, you have to frequently change the heating elements and use expensive materials for preventive maintenance. To improve the sanitary characteristics of the water at the entrance to the water heater, install a filter.
Pressure and non-pressure storage tanks
Based on the connection method, storage water heaters are divided into 2 types: pressure and non-pressure. The former are used in systems with constant water pressure. Water pressure It can be either constantly high or consistently low.
Non-pressure storage devices operate when connected to pipelines in which the pressure is not constant.Here, to supply water to the system, a pump is introduced, which turns on manually or automatically in the event of a voltage drop.
This type is considered obsolete, but it is advisable to use such a unit when suburban housing does not have a full-fledged water supply. It’s not a big deal if the wiring in the house is old - the device doesn’t require a lot of power to operate.
Mixing water of different temperatures in the tank occurs slowly. The fact that water enters the tank at a low speed can lead to a drop in the level below a critical value, as a result of which the heating elements will fail.
Depending on the mounting method, storage heaters can be horizontal or vertical. There are also wall-mounted units with a tank capacity of up to 200 l, floor-mounted units with a capacity of 200-1000 l, and built-in units of various capacities. These are not very significant differences, but they need to be taken into account when choosing.
Determining the required volume
It is very important to purchase a water heater with such a tank that it can freely provide hot water to everyone living in the house. To make your choice easier, you can use the table, which shows the average consumption of hot water for different needs. If you multiply it by the number of people constantly in the house, you get the required volume of the tank.
When you first turn on the boiler, it will take a long time to heat up. With its further use, you will not have to wait long for the water to heat up.The more powerful the heating element, the faster hot water will flow from the tap.
If there are problems with the wiring, then in order to avoid network overload it is advisable to install a time relay. It will turn the water heater on and off at a certain time. The cost of such an additional device is low.
Learn more about what you need to consider to choose a storage water heater, set out in the article we recommend.
Features of instantaneous water heaters
This type of equipment heats water supplied through a special flask attached to the mixer and equipped with a heating element. With the help of such a unit, water is heated to 40 degrees C.
The main difference is instant heating at the moment of using water. There is no need for a storage tank, therefore, the dimensions of the device are reduced.
The water temperature can be adjusted by increasing or decreasing the pressure. This device is relatively inexpensive, saves energy, and you don’t need to look for a special place to install it. Range electric models of flow type huge, allowing you to make the best choice.
The main disadvantage is high power. Up to 8 kW you can get by with a regular outlet with a voltage of 220 V. The rest are connected to a separate power line with a 3-phase power supply.To take a shower, you will need to install a flow-through water heater with a power of at least 8 kW, or even higher.
If the electrical wiring is of high quality, then as an option you can connect several devices with a power of 3 to 8 kW. In old-type houses, connecting such devices is problematic. Here it is better to use a storage boiler that does not create a large load on the electrical network.
Instantaneous water heaters, like storage ones, are divided into 2 types: non-pressure and pressure. Devices of the second type are embedded into hot and cold water pipelines, then warm water will flow from any tap in the house.
An excellent solution for apartment owners not connected to centralized hot water networks is flow device for faucet. It quickly prepares sanitary water for sinks in kitchens and bathrooms. The devices turn on and off automatically, reacting to the pressure of the liquid.
Non-pressure flow devices have a maximum power of 8 kW. They can provide warm water to only 1 point at a time. If you need hot water to flow from every tap, then install a water heater will have to do for each of them.
Although these models are cheaper than pressure models, they are not worth purchasing for a large house or apartment, but for a dacha where people live only in the summer, they work well.
Criteria for choosing gas instantaneous water heaters will be presented next article, the contents of which we recommend that you familiarize yourself with.
Rating of the best water heaters
Gas water heaters
Ariston SGA 150
Non-volatile gas water heater with a comprehensive security system
The storage gas boiler is designed to heat a fairly large volume of water - 155 liters. The unit is installed vertically on the floor, as it has impressive dimensions.
The inside of the tank is coated with enamel, which prevents corrosion. The magnesium anode also provides additional protection against rust. Between the outer steel casing and the inner tank there is a layer of polyurethane foam - the thermal insulation substrate reduces heat loss by up to 20%.
Characteristics of Ariston SGA 150:
- type – gas, storage;
- tank volume – 155 l;
- inlet pressure – 0.2-8 atm;
- thermal power – 7.22 kW;
- control – mechanical;
- protection – magnesium anode, safety valve, temperature limiter, overpressure protection;
- dimensions – 50*145*50 cm;
- weight – 53 kg.
Ignition is carried out automatically. To prevent gas from entering the air if the flame goes out, the device has plasma combustion control.
The water heater can operate on liquefied gas, using resources very economically. The Ariston SGA 150 model is suitable for servicing 4 water intake points. In 1 hour and 10 minutes the unit will heat the water to 45°C.
- Easy to install and configure
- Ignition using a piezoelectric element
- Multi-level protection system
- Maximum heating temperature - 75°C
- Low water pressure operation
- No thermometer
- In ferrous water, after a couple of years it begins to rot at the seams
- There is no damper on the exhaust pipe
Gorenje GWH 10
Instantaneous water heater with a convenient control system and LED display
A flow-type gas water heater is suitable for a small family. In a minute, the unit will raise the temperature of 10 liters of water by 25°C. The device runs on natural gas, the consumption of blue fuel is within 2 cubic meters. m/hour.
The Gorenje GWH 10 model is equipped with a copper heat exchanger, ignition is carried out by batteries, so the device is absolutely independent of the electrical network. Adjustment of temperature and water pressure is carried out by two rotary levers.
Characteristics of Gorenje GWH 10:
- type – gas, flow;
- productivity – 10 l/min;
- inlet pressure – 0.2-10 atm;
- thermal power – 20 kW;
- control – mechanical;
- protection – gas control, gas/water filter, heating temperature limitation, freezing prevention, overheating protection, thermostat;
- dimensions – 33*59*18 cm;
- weight – 9.6 kg.
An open-type instantaneous water heater takes air directly from the room, so it is necessary to ensure effective air exchange. Combustion products are removed through the ventilation shaft using natural draft.
Buyers often choose Gorenje GWH 10 due to its good combination of cost, build quality and functionality. Users like the sleek design, small dimensions and ease of installation.
- Low water pressure operation
- Filters for water and gas supply
- LED display with temperature indication
- Instant ignition and fast water heating
- Compact dimensions and ease of installation
- Complaints about noisy work
- No batteries included
- Few service centers
Vaillant AtmoSTOR VGH 220/5
A German-assembled unit is a reliable and safe solution for heating water
The tank water heater of the famous German brand is designed to supply hot water to houses, apartments, cafes and multi-purpose premises. The AtmoSTOR VGH 220/5 model can be used in conjunction with heating boilers.
The unit has a built-in gas injection burner with ceramic heat-dissipating rods. Heat losses are minimized - the combustion chamber is surrounded by water. In addition, an additional thermal insulation layer of solid polyurethane foam is provided.
A gas output sensor and a thermoelectric flame detection system are responsible for operational safety. The water heater has a cleaning flange to make servicing the equipment easier.
Characteristics of AtmoSTOR VGH 220/5:
- type – gas, storage;
- tank volume – 190 l;
- inlet pressure – up to 10 atm;
- thermal power – 9.5 kW;
- control – mechanical;
- protection – gas control, overheating, high pressure protection, thermostat;
- dimensions – 55*176*55 cm;
- weight – 95 kg.
There are very few reviews about the model. Limited demand is explained by the high cost of the water heater; the price for AtmoSTOR VGH 220/5 starts from 90 thousand rubles.
- Use of natural or liquefied gas
- Minimal heat loss
- Piezoelectric ignition
- Possibility of combination with a gas heating boiler
- High quality build
- High price
- Bulky dimensions and heavy weight
Bradford White M-I-75S6BN
Capacious gas boiler - option for offices, cottages, industrial and utility premises
A floor-mounted storage boiler with a tank capacity of 284 liters and high thermal power is perfect for hot water supply to large cottages, administrative buildings, offices and other premises. The heating speed is impressive - in 1 hour the boiler will heat up about 280 liters of water to 50°C.
The storage tank is protected from oxidation by a Vitraglass coating with a high silicon content. The Hydrojet system also prevents the appearance of scale - the water supply technology ensures accelerated heating of the liquid and protects the upper part of the tank from overheating. There is a magnesium rod inside the tank, its main task is anti-corrosion protection.
Characteristics of White M-I-75S6BN:
- type – gas, storage;
- tank volume – 284 l;
- inlet pressure – up to 10 atm;
- thermal power – 11.7 kW;
- control – mechanical;
- protection – gas control, against overheating, magnesium anode;
- dimensions – 62*162*62 cm;
- weight – 120 kg.
The maximum water temperature is limited to 80°C; when this indicator is reached, the boiler automatically turns off the heating.In standby mode, the device closes the chimney and gas consumption is significantly reduced.
The standard package of the White M-I-75S6BN unit includes: water dielectric fittings, an easily removable draft stabilizer, a brass drain valve and an instruction manual. The manufacturer provides a 24-month warranty on the tank.
- Large tank volume - 284 l
- Protective magnesium rod
- Maximum heating - 80°C
- Hydrojet anti-scale system
- Vitraglass glass coating - protection against oxidation
- Bulky dimensions and heavy weight
- High price tag
- Runs on natural gas only
Bosch WR 10-2P23
Compact gas water heater with piezo ignition - the choice of many users
This model of instantaneous water heater is in demand among buyers. Many are attracted by the famous brand, the compactness of the unit and the complex of built-in security elements. The productivity of the gas water heater is sufficient to service two water intake points.
WR 10-2P23 with an open combustion chamber, a copper heat exchanger installed inside the housing. The controls are located on the front panel - there is a slider for selecting the flame intensity and a rotary switch for regulating water flow.
Characteristics of Bosch WR 10-2P23:
- type – gas, flow;
- productivity – 10 l/min;
- inlet pressure – 0.10-10 atm;
- thermal power – 17.4 kW;
- control – mechanical, adjustment of water flow and flame intensity;
- protection – gas control, overheating protection, water heating temperature limitation;
- dimensions – 31*58*22 cm;
- weight – 11 kg.
Heating limit is 60°C. Users note the stability of the supplied water temperature, quiet operation subject to timely maintenance, and ease of control.The column starts up even at low pressure, which especially pleased residents of houses with old water supply lines.
An important factor in favor of the Bosch WR 10-2P23 is numerous customer reviews, which allow us to give an objective assessment of the performance and ease of use of the gas water heater.
- Operation with low water pressure
- Complete security system
- Quiet operation
- Intuitive controls
- No batteries required for operation - piezo ignition
- After 3-4 years there is a possibility of heat exchanger leakage
- Complaints about incorrect operation of piezo ignition
- To connect, you need to purchase additional hoses
- No temperature display
Electric water heaters
ATLANTIC VERTIGO STEATITE WIFI 80
Water heater with the lowest cost of ownership, minimum maintenance frequency, maximum warranty and two modern “dry” soapstone heating elements
The first place is occupied by the model of the French brand Atlantic, a long-time leader in the European water heater market.
Atlantic Vertigo Steatite WiFi 80 is equipped with two “dry” steatite heating elements. Note that “dry” steatite heating elements are a proprietary patented development of Atlantic. Unlike regular “wet” ones, “dry” options do not come into contact with water. The heating element is located inside a protective enamel flask, with which it also does not come into direct contact. In this way, a 100% guarantee of the absence of corrosion and scale on the electric heater is achieved.
Replacing the anode is required every two to three years versus a year or six months with a “wet” heating element. As a result, Atlantic water heaters are serviced TWO times less often than any other boilers. And they cost THREE times cheaper.
Over eight warranty years (7 years + 1 year free with timely maintenance) Atlantic work fully pays for its cost. In addition, a “dry” steatite heating element cools more slowly than a “wet” one, which allows reducing energy consumption.
By the way, hard scale does not accumulate on the protective flask, so there is no reason for the noise when the water heater is operating. Therefore, Atlantic boilers with “dry” steatite heating elements are also the quietest.
Characteristics:
- type - electric, storage;
- tank volume - 65 l;
- working pressure - 8 atm;
- orientation - vertical / horizontal;
- heating element - “dry” heating element;
- control - electronic and via an application on a smartphone;
- maximum power - 2.25 kW;
- protection - protection against overheating/starting without water/overpressure, check valve, magnesium anode;
- dimensions - 29*109*49 cm.
Atlantic Vertigo Steatite WiFi 80 can be controlled via the Cozytouch mobile app. With its help, you can turn the water heater on and off, monitor the remaining heating time, control the consumption of water and electricity, etc.
- There is remote control via a mobile application
- Possibility of horizontal and vertical placement
- Economical energy consumption. The highest class “B” according to the European energy efficiency classification
- Maximum protection against corrosion and scale
- Can work with any type of water
- Extended warranty period for the tank - 8 years (instead of 5 years, like other manufacturers)
- Soaptite patented heating element - 20 years of service
- The quietest boiler
- Short power cable
- No outlet for recycling
Thermex Thermo 100 V
Excellent price/tank capacity ratio
The Russian-assembled unit pleases with an acceptable cost with excellent performance and high power of the heating element.
The Thermo 100 V model has a classic design - a snow-white cylindrical body with a thermometer and light indicators. There is a rotary control on the bottom panel to select the power mode.
The internal steel tank has a bioglass-porcelain coating, which increases the protection of the drive from heat and water shocks, and also reduces the likelihood of corrosion due to the narrowing or expansion of the tank during temperature changes.
Characteristics of Thermo 100 V:
- type – electric, storage;
- tank volume – 100 l;
- inlet pressure – 0.5-6 atm;
- power consumption – 2.5 kW;
- heating element - heating element;
- control – mechanical, on/heat indication;
- protection – there is an RCD, a check valve, 1 anode;
- dimensions – 45*90*46 cm.
A storage water heater with a 100 liter tank will be an excellent solution for a large family. Its power is sufficient to service several water intake points.
- Capacious tank - 100 l
- Heating speed
- Good heat capacity of the tank
- There is a thermometer and an RCD
- Power and heating indicators
- Thermometer malfunctions
- Isolated complaints about tank leakage after a year of operation
Electrolux EWH 50 Formax
Storage boiler with dry heating element - the optimal solution for hard water
A distinctive feature of this model is the presence of a dry heating element. This design solution reduces the unit’s demand for water, since the heating element does not come into direct contact with the liquid.
The EWH 50 Formax water heater has an attractive design - the “flattened” shape of the tank makes it easy to choose a place for its installation.The control panel is extremely clear and consists of two rotary controls for selecting power and temperature modes. There are also light indicators for turning on and heating.
Characteristics of EWH 50 Formax:
- type – electric, storage;
- tank volume – 50 l;
- inlet pressure – 0.8-6 atm;
- power consumption – 2 kW;
- heating element - dry heating element;
- control – mechanical, on/heat indication, 3 power modes;
- protection – safety valve, RCD, protection against overheating/starting without water, magnesium anode;
- dimensions – 34*83*36 cm.
Numerous reviews indicate the demand for the model. A 50 liter boiler is suitable for one or two people. Some families choose a small water heater as a backup source of warm water during the absence of centralized hot water supply.
- Dry heating element
- Multiple heating modes
- Protection against overheating and operation without water
- Simplicity and reliability of mechanical control
- Good thermal insulation of the tank
- No temperature display
- High price
- Complaints about the work of the service center
Stiebel Eltron DDH 8
Pressure instantaneous water heater from a reliable German brand
A compact instantaneous water heater produces a little more than 4 liters of warm water per minute. The model stands out for its laconic design, compact dimensions and high-quality assembly. The manufacturer provides a 36-month warranty on the product.
The water heater starts working automatically when the water tap is opened. The heating power is adjusted manually using a rotary lever located in the center of the body.The high thermal power allows Eltron DDH 8 to be used for several water intake points, but care must be taken to ensure the reliability of the electrical wiring.
Characteristics of Eltron DDH 8:
- type – electric, flow;
- productivity – 4.3 l/min;
- inlet pressure – 1-10 atm;
- power consumption – 8 kW;
- heating element – copper heating element;
- control – hydraulic, power adjustment – 3 modes, indication;
- protection – heating temperature limiter, overheating protection, degree of protection of electrical appliances – IP25;
- dimensions – 22*27*9.5 cm.
The Eltron DDH 8 water protection level is 5 points. This means that the device can be placed directly in shower stalls - the body can withstand even direct hits from jets.
Thanks to its compact dimensions and light weight, the water heater is easy to mount on the wall; a template is provided for this. It should be noted that the package does not include a hose with a shower head.
- Compact dimensions
- 3 power modes
- High degree of protection - IP25
- Warranty - 3 years
- Fast water heating
- High price
- High power consumption
- No shower head or hose
- No thermometer
Bosch Tronic 1000T ES30-5
Storage water heater with a small tank and economical electricity consumption
A representative of a German manufacturer – a compact and energy-efficient water heater. The tank volume is 30 liters, so the model can be recommended for one person. Some people choose a small boiler for summer use in the country.
The Tronic 1000T ES30-5 water heating tank is made of 2 mm thick metal, glass-ceramic coating is applied to the inner walls - the material is absolutely hygienic and chemically neutral.To ensure that the water in the heater maintains its temperature longer, a thermal insulation layer (1.8 mm) is provided.
Characteristics of Tronic 1000T ES30-5:
- type – electric, storage;
- tank volume – 30 l;
- inlet pressure – up to 8 atm;
- power consumption – 1.2 kW;
- heating element - heating element;
- control - mechanical, there is heating temperature adjustment, power-on indication;
- protection – heating temperature limiter, overheating protection, safety valve, magnesium anode, frost prevention mode;
- dimensions – 35*52*37 cm.
The time for heating water to 50°C is 1.5 hours, but you can wash dishes or take a shower much earlier. The speed at which the water reaches the required temperature largely depends on the season of use. In summer, heating takes less time.
Compact dimensions allow you to install the tank in a limited space - the height of the boiler is half a meter and the diameter is 35 cm.
- Economical energy consumption
- Compact dimensions
- There is a thermometer
- Glass ceramic tank coating
- Magnesium anode for corrosion protection
- Small tank - 30 l
- The power regulator is hidden under the cover
Electrolux NPX4 Aquatronic Digital 2.0
Instantaneous water heater with electronic control and temperature indication
An Electrolux instantaneous water heater has a low performance rating. A special feature of this model is the presence of a hidden display. The set heating mode is displayed on the body - the numbers glow blue. There are buttons to adjust the temperature.
When the tap is opened and there is sufficient water flow, the device automatically starts heating. Nominal pressure – 7 bar, occlusion flow rate – 1.7 l/min.To connect the water heater, a wire with a cross-section of at least 2.5 m is suitable2.
Characteristics of NPX4 Aquatronic Digital 2.0:
- type – electric, flow;
- productivity – 2 l/min;
- inlet pressure – no data;
- power consumption – 4 kW;
- heating element - heating element;
- control is electronic, there is temperature control and a display;
- protection – heating temperature limiter, overheating protection, thermostat, protection against running without water;
- dimensions – 19*14*9.5 cm.
The manufacturer claims that the unit is suitable for servicing two water intake points. However, in practice, when the taps in the kitchen and bathroom are opened at the same time, the water temperature drops significantly. The optimal option for use is for washing dishes. The water heater can be installed on the wall or hidden under the sink.
- Hidden temperature display
- Compact dimensions
- Convenient temperature adjustment
- Anti-scale protection - Pullsten technology
- Heating and power-on indication
- Complaints about automatic startup failures
- Short power cable
- Low productivity - 2 l/min
Ariston ABS ANDRIS LUX 10 OR
Mini-boiler from Ariston - exclusive design, reasonable price tag and complete protection system
A storage boiler with a mini-tank is a good alternative to an instantaneous water heater. This option is suitable for apartments and houses with intermittent water pressure.
The internal tank is made of steel, the outside is covered with plastic, and the inside is Ag+ - a composite coating with silver ions that prevents the formation of corrosion and helps purify the water. The manufacturer assures that water acquires bacteriological properties against many microorganisms.
Characteristics of ABS ANDRIS LUX 10 OR:
- type – electric, storage;
- tank volume – 10 l;
- inlet pressure – 0.2-8 atm.;
- power consumption – 1.2 kW;
- heating element - heating element;
- control – mechanical, power-on indication;
- protection – RCD, heating temperature limiter, overheating protection, safety valve;
- dimensions – 36*36*30 cm.
A ten-liter tank is not enough to fill a bathtub, but this volume is enough for one person to take a shower and wash dishes. The mini-water heater can be installed above the sink or on the wall in the bathroom, but it is important to prevent direct water jets from entering the body, since the protection class is IPX4.
- Beautiful design and compact dimensions
- Temperature adjustment
- Power cable with RCD
- Fast water heating
- Tank warranty - 5 years
- The need for periodic maintenance
- Plastic scratches quickly
- Small volume of heated water
Hyundai H-SLS1-30V-UI705
Ultra-compact water heater from a South Korean brand: energy efficiency and reliability
This beautiful water heater from Hyundai stands out among its competitors with its narrow body; the diameter of the unit is only 28 cm. Thanks to its compactness, the device can be placed in a small niche.
The internal tank and boiler components are made of stainless steel (grade SUS 304, thickness 1.2 mm), so the device is reliably protected from corrosion. Between the storage tank and the outer casing there is a dense layer of thermal insulation. Due to the absence of “thermal bridges”, heat loss is minimal.
Characteristics of H-SLS1-30V-UI705:
- type – electric, storage;
- tank volume – 30 l;
- inlet pressure – 1-7 atm.;
- power consumption – 1.5 kW;
- heating element - heating element;
- control – mechanical, power-on indication;
- protection – check valve, protection against overpressure and overheating, magnesium anode;
- dimensions – 28*77*28 cm.
Reviews about the H-SLS1-30V-UI705 model are mostly positive. The water heater is praised for quickly heating water and maintaining temperature for a long time. There are no complaints about the performance of the device.
The unit does not have a display, and the operating mode control is located on the bottom side of the housing. Please note that to connect the boiler you need to purchase an additional RCD - the protective device is not included in the package.
- Narrow body - 28 cm
- Stainless steel tank
- Retains heat well
- Comprehensive protection system
- Enlarged magnesium anode
- No RCD
- High price
- No thermometer and display
- Tank volume - 30 l
Thermex Surf Plus 6000
Instantaneous water heater with spiral heating element
The Surf series water heater is suitable for supplying warm water to several water intake points. The maximum heating temperature is 38°C. In a minute, the unit will increase the temperature of 2.5 liters of water by 35°C. With a productivity of 3.4 l/min, the water will warm up by 25°C.
The Surf Plus 6000 model has a spiral heating element. Unlike heating elements, the coil heats up very quickly and has high efficiency.
Surf Plus 6000 Features:
- type – electric, flow;
- productivity – 3.4 l/min when warmed up at 25°C;
- inlet pressure – 0.5-6 atm.;
- power consumption – 6 kW;
- heating element - spiral;
- control – hydraulic, power on indication;
- protection – from switching on without water, from overheating;
- dimensions – 13*18*6.8 cm.
Reviews about the model are somewhat contradictory.Some users are absolutely satisfied with their purchase - they praise the ease of installation, the possibility of hidden installation and the heating efficiency. However, there are complaints about the build quality.
- Acceptable cost
- Compact dimensions
- Fast water heating
- Maintenance of several water intake points
- Quick installation - there is a mounting panel
- It is advisable to supply a separate power line
- High power consumption
- Fragile plastic wall mount
- Sensitivity to high pressure
- No shower head included
Combined water heaters
Gorenje GBK 150 OR
Water heater with a well-thought-out safety system, dry heating element and convenient electronic control
The storage unit of the indirect-electric heating method boasts excellent technical equipment and functionality.
The inside of the tank is covered with enamel, which is chemically neutral and does not affect the quality characteristics and smell of water. This treatment in tandem with a large magnesium anode protects the unit from corrosion. The manufacturer is confident in the quality of its product and provides a long warranty on the tank - 7 years.
To provide the house with hot water outside the heating season, 2 dry heating elements are provided - the heating elements do not come into contact with the liquid medium, so they last a long time. Heat loss is 1.64 kWh/24 h; a high-quality thermal insulation layer is provided for maximum heat retention.
Characteristics of GBK 150 OR:
- type – indirect-electric, storage;
- tank volume – 150 l;
- inlet pressure – up to 6 atm;
- power consumption – 2 kW;
- heating element - 2 dry heating elements of 1 kW each, a heat exchanger made of enameled steel with an area of 0.9 sq.m and a power of up to 17.6 kW;
- control – electronic, thermometer, display, heating/on indication;
- protection – check valve, freeze prevention, magnesium anode, protection against overheating and overpressure, self-diagnosis of faults;
- dimensions – 50*133*51 cm.
The unit has an interesting “Anti-legionella” option - if the water in the boiler has not warmed up above 65°C for two weeks, the device will automatically raise the water temperature. This function prevents the appearance of pathogenic bacteria.
- Dry heating element
- Display and self-diagnosis option
- Comprehensive protection system
- Anti-Legionella function
- Tank warranty - 7 years
- High price
- Connection complexity
Thermex Combi ER 80V
Indirect electric heater of Russian assembly - simplicity of design and reasonable price tag
An indirect heating boiler with a heating element is characterized by good workmanship. The 80 liter capacity consists of steel tanks, between which a 50 mm thick thermal insulation layer is placed. The inside of the tank is covered with glass porcelain. To protect against corrosive processes, a double magnesium anode is provided.
There is a removable panel on the front side of the boiler. It provides access to the heating element, anode, thermostat and thermal switch. There is also a control knob for selecting the heating temperature, the maximum value is 75°C.
Characteristics of Combi ER 80V:
- type – indirect-electric, storage;
- tank volume – 80 l;
- inlet pressure – up to 6 atm;
- power consumption – 1.5 kW;
- heating element - heating element, spiral heat exchanger with an area of 0.59 sq.m and a maximum power of up to 14.6 kW;
- control – mechanical, thermometer;
- protection – magnesium double anode, thermostat, overheating protection, safety valve;
- dimensions – 50*85*56 cm.
The thermal switch will not allow the device to heat water above 95°C; if the temperature rises excessively, the boiler will automatically disconnect from the power supply. The safety valve relieves excess pressure through the drain hole, so when installing the water heater, it is necessary to provide drainage into the sewer.
- Acceptable cost
- Double magnesium anode
- Bioglass porcelain coating of the internal tank
- Long-term heat retention
- No display or self-diagnosis option
- Access to thermal switch via removable panel
- No protection against turning on without water
Thermex Combi ER 200V
Capacious combined unit - a solution for a country house or small business
The Combi series unit with a large tank is suitable for users who need to get a large volume of hot water in the shortest possible time. It will take the boiler about 2.5 hours to heat the entire tank 45°C higher.
The Combi ER 200V device complies with domestic GOST standards and international standards. The inner surface of the tank is covered with glass porcelain, polyurethane thermal insulation helps retain heat. The control panel with temperature regulator is located behind the removable panel on the front side of the case.
Characteristics of Combi ER 200V:
- type – indirect-electric, storage;
- tank volume – 200 l;
- inlet pressure – up to 6 atm;
- power consumption – 3.5 kW;
- heating element - heating element, heat exchanger with an area of 1.4 sq.m and a maximum power of 34.6 kW;
- control – mechanical, thermometer;
- protection – magnesium double anode, thermostat, overheating protection, safety valve;
- dimensions – 54*145*64 cm.
The boiler is quite bulky and heavy, the weight of the water heater is 74 kg. The Combi ER 200V model is designed for floor installation.
- Capacious tank - 200 l
- Double magnesium anode
- Long-term heat retention
- Tank with bioglass porcelain coating
- Good price/tank volume ratio
- Bulky dimensions
- Isolated complaints about heating element combustion
- No protection against turning on without water
- No display or self-diagnosis option
Drazice OKC 125
Mounted combined water heater from a Czech brand - high-quality assembly and easy operation
Boilers from the Czech manufacturer have proven themselves to be reliable and efficient units. The brand has various types of water heaters in its arsenal.
Model Drazice OKC 125 – combined. The storage boiler is equipped with a “dry” heating element with a power of 2.2 kW for heating water outside the heating season. In winter, the unit heats the water indirectly - through an installed heat exchanger.
For ease of use, a temperature regulator and thermometer are located on the front panel.
Characteristics of Drazice OKC 125:
- type – indirect-electric, storage;
- tank volume – 125 l;
- inlet pressure – up to 6 atm;
- heating element - “dry” heating element with a power of 2.2 kW, a heat exchanger with an area of 0.7 sq.m and a maximum power of 17 kW;
- control – mechanical, thermometer, power-on indication;
- protection – magnesium anode, safety valve, protection against overheating, overpressure and freezing;
- dimensions – 52*107*52 cm.
Heating of water with an electric heater from 10°C to 60°C occurs in 3.5 hours.In indirect heating mode, the water warms up faster.
Users respond positively to the operation of the unit. Installing and connecting the water heater is not difficult - the kit includes a check valve, brackets and mounting screws.
The drain valve will have to be purchased separately and must be installed at the water inlet to allow for dismantling and repair. To service the boiler (removing scale, water stone and sediment), a service hatch is provided.
- "Dry" heating element
- Thermometer and temperature control
- Anti-legionella function
- Fast heating speed
- Multi-level protection system
- Inaccurate thermometer readings
- No outlet for recycling
- No display or self-diagnosis option
- Drain valve must be purchased
Drazice OKC 200
High-performance indirect-electric heating boiler with dry ceramic heating element
A water heater with a 200 liter tank is an acceptable option for a large private house, cafe and other premises.
The combined unit is equipped with a ceramic “dry” heating element placed in a steel sleeve. This design makes it easier to replace the heating element, increases the heat transfer surface and prevents the formation of scale on the heating element.
The water heating tank and flange cover are made of steel. The single material prevents the galvanic effect and the occurrence of electrochemical corrosion.
Characteristics of Drazice OKC 200:
- type – indirect-electric, storage;
- tank volume – 200 l;
- inlet pressure – up to 6 atm;
- heating element - “dry” heating element with a power of 2.2 kW, a tubular spiral heat exchanger with an area of 1.08 sq.m and a maximum power of 17 kW;
- control – mechanical, thermometer, power-on indication;
- protection – magnesium anode, safety valve, protection against overheating, overpressure and freezing;
- dimensions – 58*130*58 cm.
The 42 mm thermal insulation layer ensures good heat retention. On the front panel there is a thermostat knob for selecting the temperature mode. Thanks to the high degree of protection, the Drazice OKC 200 water heater can be installed in the bathroom.
- Capacious tank - 195 l
- "Dry" ceramic heating element
- Thermometer and temperature control
- Multi-level protection system
- High degree of protection - IP45
- Bulky dimensions
- No display or self-diagnosis option
- Drain valve must be purchased
Safe operation of equipment
The main element that guarantees the safe operation of a storage water heater is a thermocouple. It automatically turns off the heating element after heating the water to the set temperature. A thermocouple consists of 2 conductors having different resistances.
If the thermocouple stops functioning for some reason, the safety valve comes into operation. It is installed at the inlet and includes a valve with a spring, which is in a relaxed state at a pressure in the system of up to 7 atm.
As soon as the pressure reaches a critical value, the spring compresses under its action and opens the drain hole. Some of the hot water flows out, the pressure inside the tank decreases.
When choosing a water heater, you need to pay attention to its protection class, especially if water shutdowns occur frequently. The best choice in this case would be closed-type water heaters with protection class IP 24, IP 25.
In a instantaneous water heater, a pressure sensor is responsible for safety. It turns off the heating elements automatically when the pressure in the water supply drops when the tap is closed.
You can learn how to use a water heater correctly read here. Compliance with operating rules significantly extends the operating life of the equipment.
Criteria for comparing water heaters
Manufacturers are constantly upgrading their products and releasing improved models. Comfort in your home will depend on how well you can choose a water heater. To a large extent, the reliability of equipment is determined by which company produced it.
An important question facing the buyer is whether the water heater is suitable for you in all respects. To make an error-free choice, you need to know the main evaluation criteria.
To objectively evaluate the advantages of a storage water heater model, you need to compare according to the following parameters:
- Volume. Tank capacity may vary. The greatest demand is for units with an average storage volume of 30-100 liters.
- Power. For high-quality models it is far from small.
- Type of heating element. It can be in the form of a spiral or heating element.
- The presence of a “sacrificial” anode.
- Electrical protection class.
- Manufacturer popularity.
The price of the unit is not in last place, but in pursuit of cheapness, do not forget about quality. Excessive savings can result in many problems during operation.
Overview of manufacturers of storage-type units
Manufacturers that have long earned the trust of consumers include, first of all, Ariston.Storage water heaters are quite affordable in price, have a stylish design, have an impressive list of additional functions, and a high degree of safety.
An auto shut-off mechanism protects against electric shock if the tank breaks down; there is a special valve that is triggered when the pressure is high.
The European manufacturer Thermex also occupies a leading position; in particular, the ID 50 V model is in great demand. It has compact dimensions, good design, and low power. There are check and safety valves. This model has a serious drawback - the tank is susceptible to corrosion, because... it has a weak anti-corrosion coating.
The name Bosch is associated by many with the concept of reliability. Its products always top the water heater rating tables in the global market. Devices from this manufacturer are distinguished by durability, convenient settings, optimal power and an appropriate price justified by high quality.
There are 3 categories of Bosch products: Basic, Comfort, Top, differing in both excellent characteristics and price.
Products from the Czech manufacturer of storage water heaters Drazice also have positive reviews. They are designed to heat water up to 95 degrees C in large volumes - at least 90 liters at a time. The models have high-quality corrosion protection and low heat loss.
The Swedish company Electrolux also produces water heaters with excellent performance characteristics. Particularly popular is the CENTURIO EWH 80 model, equipped with a spacious stainless steel tank (80 l) and a tubular heater. It is distinguished by excellent thermal insulation and stylish design.
This model only lacks an anode, which protects the tank and heater from corrosion. When choosing Electrolux models, you should make sure that they are not assembled in China.
Manufacturers of instantaneous water heaters
For owners of small apartments, heaters manufactured by AEG are a good choice, but on the condition that the electrical wiring is new. All parts of the device that can be exposed to water splashes have an anti-corrosion coating; the material of the tank has shock-proof properties.
For individual consumers, the disadvantage is the high energy consumption and high cost.
Electrolux, in addition to storage water heaters, also produces flow-through models. Their advantage is safety, a clear interface, and ease of installation. Based on some reviews, the heating elements are not durable.
Polaris Mercury has a streamlined shape that allows you to install the device anywhere. Heats up water very quickly. Some inexpensive models have low efficiency, the limit for them is 40 degrees C.
Conclusions and useful video on the topic
The author of the video gives an objective assessment of instantaneous and storage water heaters. He talks about the pros and cons of each, based on his own experience:
You will hear advice from professionals on choosing a water heater, depending on the material and tank, when watching this video:
It is difficult to make a choice with such a variety of water heaters. But the guideline should be your own needs and the reliability of the electrical wiring. If you need truly reliable, high-quality equipment, do not skimp on the price.
Would you like to talk about how you chose a water heater for installation in an apartment, country house or country house? Do you have any useful information for site visitors or have any questions while reading the material? Please write comments in the block below, share your opinion, leave photos on the topic of the article.
In summer, the topic of boilers and water heaters is very relevant even in city apartments, and even more so in private houses. Last year I renovated my bathroom and installed a water heater at the same time. The house is old, so it was only possible to install storage. We chose a horizontal flat one, it fits very well into the bathroom and does not clutter up the space. If you have small children, this is an even more necessary thing, because in the summer the water can be turned off for a month, so you can’t run around with basins.
I decided to replace the gas water heater with an electric water heater. After consulting with a specialist, I chose Ariston. My wife and I live together, so we took a volume of 50 liters. An electrician I knew helped with the installation. The installation took about 2 hours. It is possible to heat the water up to 80 degrees, but up to 60 degrees is enough for us, especially since the water stays hot throughout the day without heating.
Which boiler to choose within 10 thousand rubles? And how to protect it from scale formation in the tank and on the heating element?
What tank volume is needed? This also directly affects the cost of the boiler. I will offer options with a tank volume of 50 liters, so that you have an idea of what you can get with a budget of 10 thousand rubles. Here are some options:
1. Boiler THERMEX NOVA 50 Slim (made in Russia, 2 “dry” heating elements) - price 8,300 rubles;
2. Boiler WILLER EV50DR optima (made in China) - price 8,600 rubles;
3. Boiler Nova tec NT-DD 50 (made in Ukraine) - price 8300 rubles;
4. Boiler ELDOM Style DRY 50 SLIM 2×0.8 kW 72267WD HITET (made in Bulgaria) - price 9400 rub.
5. Boiler GALANTA DRY 50 SLIM 1.6 kW 72267 WDG (made in Bulgaria) - price 9500 rub.
As for scale formation, it will not form on the heating element, but this cannot be avoided on the tank if filters are not installed. There are special filters for both washing machines and boilers that pre-purify the water.