How to choose an indirect heating capacitive water heater: the best 10 models + tips for choosing
A well-functioning hot water system in a private house is the key to comfortable living in both winter and summer.Agree, without it it is much more difficult to take a shower or wash grease-covered baking sheets.
But even with a high-performance boiler, there may not be enough heated water to serve all family members. And then the hot water system is supplemented with an indirect heating boiler, which raises the water temperature due to the already installed equipment.
We invite you to work with us to identify the best indirect heating tank water heater: we will find out how to choose a boiler after analyzing the ratings of current models. Among the top domestic water heaters are productive models with a high degree of protection and decent efficiency, designed to serve residential buildings.
The content of the article:
Indirect DHW cylinder
Budget models
Kospel Termo Hit WW 80
Practical and efficient water heater at a reasonable price
The WW series horizontal heat exchanger is equipped with a durable double coil, designed for continuous heating and storage of water. It is perfect for working in tandem with a solid fuel boiler, and can be included in a heating system with an external circuit - for example, a stove.
The steel surface of the tank is coated with powder enamel automatically at the factory, the enamel layer is of optimal thickness. Thermal insulation is made of black polyurethane foam, which is highly durable.
For a stable and uniform supply of cold water, a sprayer is installed at the inlet of the heat exchanger. If necessary, you can install an electric heating element.
Specifications:
- Max. heating – 80°C;
- tank volume – 80 l;
- number of heat exchangers – 1;
- installation – wall, horizontal;
- eyeliner - side;
- weight – 26.5 kg;
- thermometer - yes.
Termo Hit is suitable for owners of private houses equipped with a heating system with a solid fuel boiler, and is designed to serve a small family.
- Fast heating
- Possibility of connecting a heating element
- Wall installation
- Small volume
- No indication
Gorenje GV 150
Boiler with high efficiency and reliable thermal insulation
The indirect water heater GV 150 is made of high-quality steel coated with enamel. Floor-standing installation requires a separate place in the boiler room, but to save free space it can be placed directly under the wall-mounted boiler.
The traditional method of corrosion protection is a built-in magnesium anode. A check valve and overheat protection are provided. The boiler is equipped with a 4-liter tubular heat exchanger, which has increased performance and a large area.
For economical heat energy consumption and minimal heat loss, the tank is protected with high-quality environmentally friendly insulation. The control is mechanical, the indication signals switching on and heating.
Specifications:
- Max. heating – 75°C;
- tank volume – 150 l;
- number of heat exchangers – 1;
- installation – floor, vertical;
- eyeliner - top;
- weight – 70 kg;
- thermometer - yes.
It is recommended to install the water heater as an additional storage tank with a heating function. Suitable for systems equipped with an autonomous gas boiler; it can also be connected to central heating.
- Large tank volume
- High quality thermal insulation
- Convenient control
- Heavy weight
- Floor installation
Hajdu STA200C
Efficient water heating with the ability to connect 2 heating elements
The floor-standing vertical model STA200C is made of high-quality steel, coated with durable glass ceramics on the inside, and is designed to heat 200 liters of water. Works with any type of boiler, including gas.
It is possible to connect 1-2 heating elements.Thanks to its large volume, it can simultaneously serve several water supply points - for example, a kitchen faucet and a shower.
The heat exchanger is installed at the bottom, designed for a maximum power of 30 kW. The water inlet is side, which allows you to drain water if necessary. The outer casing is made of plastic
Specifications:
- Max. heating – 95°C;
- tank volume – 200 l;
- number of heat exchangers – 1;
- installation – floor, vertical;
- eyeliner - side;
- weight – 74 kg;
- thermometer - yes.
The tank volume is sufficient to serve a family of 3 people. The manufacturer has other, larger modifications - from 300 to 1000 liters.
- Quiet operation
- High efficiency
- Low power consumption
- Possible manufacturing defect
Drazice OKC 200 NTR
Reliable and unpretentious water heater with convenient controls
The stationary boiler of the NTR series is designed to work with various types of boilers in the heating system, most often gas ones. The rated power allows the production of large volumes of process water.
The internal part is treated with enamel and a magnesium anode is installed, which prevents corrosion and deposits, and the hot water meets sanitary and hygienic standards. Heat losses are minimal due to reliable polyurethane thermal insulation.
The temperature can be adjusted smoothly using mechanical controls. A light indicator helps monitor the heating process, and a thermometer helps control the temperature.
Specifications:
- Max. heating – 95°C;
- tank volume – 200 l;
- number of heat exchangers – 1;
- installation – floor, vertical;
- eyeliner - top;
- weight – 95 kg;
- thermometer - yes.
The boiler is designed to serve a family of 3-4 people.It is recommended by the manufacturer for installation not only in residential but also in industrial premises as an additional stationary water heater.
- Large tank volume
- Easy connection
- Temperature adjustment
- Possible leaks at connections
Hajdu STA300C
Always hot water for a friendly large family
The closed type model STA300C is designed for floor installation, designed for heating 300 l, equipped with one lower heat exchanger. Can serve several water points. It is possible to install 1-2 electric heating elements with a power of 3 to 9 kW.
For more convenient drainage, the water inlet is located on the side. The inner surface of the tank is covered with glass enamel, the outer side is protected with polyurethane insulation and a plastic casing.
Heating of water in the boiler can be carried out using any type of boiler, as well as using a solar collector.
Specifications:
- Max. heating – 95°C;
- tank volume – 300 l;
- number of heat exchangers – 1;
- installation – floor, vertical;
- eyeliner - side;
- weight – 100 kg;
- thermometer - yes.
The tank volume is sufficient to service a large cottage inhabited by a family of 4-6 people. If desired, you can purchase a water heater of larger or smaller volume: the line includes modifications from 200 to 1000 liters.
- Glass ceramic coating
- Built-in thermostat
- Low power consumption
- No clear installation instructions
- Large dimensions
Medium and expensive segment
BAXI Premier Plus 150
Great option for a small country house
The indirect water heater is designed for installation in the heating system of a residential building; it works equally effectively with all types of boilers, including condensing boilers. The kit includes an expansion tank that compensates for unstable pressure in the system.
All kinds of protection are provided: from corrosion, overheating, scale. The development of the “coil in a coil” brand has been introduced, which consists of optimal placement of the heat exchanger. It is installed deep in the tank so that the water is heated as quickly as possible and spreads in different directions.
The internal coating is made of DUPLEX steel, which is reliable and resistant to corrosion. Installation is simple, all connections are located in a convenient place.
Specifications:
- Max. heating – 65°C;
- tank volume – 150 l;
- number of heat exchangers – 1;
- installation – universal, vertical;
- eyeliner - side;
- weight – 38 kg;
- thermometer - yes.
The indirect water heater is suitable for servicing any residential buildings with boiler equipment. It is large enough, the heated water is enough for a family of 3-4 people.
- Possibility of wall installation
- Fast water heating
- High quality build
- Incomprehensible installation instructions
- Rejection of individual elements
ACV Comfort 160
A profitable solution for consumers with high water requirements
Indirect water heaters of the Comfort series with a tank volume of 160 l are intended for use in single-family houses with increased requirements for hot water. It can be installed both on the floor and on the wall - fasteners are optional.
The design of the heat exchanger is based on “tank-in-tank” technology: the inner tank contains sanitary water, the outer tank contains technical water.The inner tank is made of corrugated stainless steel, the outer casing is made of heat-resistant plastic, and between them there is a durable heat-insulating layer of polyurethane.
Due to the wavy surface, self-cleaning technology is implemented. The heat transfer area is increased, due to which the boiler can easily serve several water supply points.
Specifications:
- Max. heating – 95°C;
- tank volume – 160 l;
- number of heat exchangers – 1;
- installation – universal, vertical;
- eyeliner - top;
- weight – 47 kg;
- thermometer - yes.
The tank volume is enough to heat enough water for a family of 3-4 people with a small child.
- Fast heating of cold water
- Self-cleaning function
- High performance
- The external tank is not protected from corrosion
Protherm FE 200/6 BM
A successful combination of high performance and security
The floor-standing cylindrical model FE 200/6 BM is designed to heat 184 liters of water and maintain the temperature of the specified parameters; it is recommended by the manufacturer for use with boilers with a power of up to 100 kW.
Protection against scale and corrosion has been thought out - a traditionally pre-installed magnesium anode and enamel treatment of the inner surface of the tank. To reduce heat loss, a polyurethane thermal insulation layer is provided.
The tubular twin heat exchanger is made of high-strength steel and is located at the bottom of the tank. This is an easy way to quickly heat the water in the right quantity.
Specifications:
- Max. heating – 80°C;
- tank volume – 184 l;
- number of heat exchangers – 1;
- installation – floor, vertical;
- eyeliner - top;
- weight – 97 kg;
- thermometer - no.
A medium-sized water heater is a popular solution for country houses with an autonomous heating system and any type of boiler.
- Operational heating
- High quality build
- Convenient and clear connection
- No temperature sensor
BAXI Premier Plus 200
Spacious model with coil-in-coil technology
The Premier Plus series is designed for comfortable home use. The model is equipped with an expansion tank that compensates for pressure drops. The equipment is distinguished by reliability, safety, and all types of protection - from scale, corrosion, overload.
The brand’s development is a “coil within a coil”: a heat exchanger is placed deep into the tank to quickly and uniformly heat the water. The water heater is compatible with various types of boilers, including condensing ones.
Wall and floor installation possible. The body is made of DUPLEX stainless steel – a lightweight, corrosion-resistant metal. The connections to the system are located in a convenient location in the front part.
Specifications:
- Max. heating – 65°C;
- tank volume – 200 l;
- number of heat exchangers – 1;
- installation – universal, vertical;
- eyeliner - side;
- weight – 38 kg;
- thermometer - yes.
The water heater is equipped with protection and is intended for servicing residential premises. Designed to heat 200 liters of water, therefore, suitable for a large family.
- Universal installation
- Convenient mechanical control
- Installation key included
- Possible manufacturing defect
ACV Smart Multi-Energy 300
Efficient, productive boiler for floor installation
The model from the Multi-Energy series is designed to serve large cottages.The water is heated from the heating system, which can be replaced with a heating element purchased separately. Can be connected to a high/low temperature circuit.
The hot water tank is made of high-quality steel that is resistant to corrosion. Heat loss is minimized by rigid polyurethane insulation hidden under a plastic casing. The thermostat sleeve is located next to the coil.
Included is a control panel. Water is heated to +80°C within 45 minutes.
Specifications:
- Max. heating – 90°C;
- tank volume – 300 l;
- number of heat exchangers – 1;
- installation – floor, vertical;
- eyeliner - top;
- weight – 99 kg;
- thermometer - yes.
Due to its large volume, a water heating tank is often purchased for country cottages with an autonomous heating system.
- Efficient heating
- Volume tank
- Simple controls
- Takes up a lot of space
Criteria for choosing an indirect heating boiler
Using a volumetric container that produces heat thanks to an already installed heating system or additionally connected equipment, you can significantly increase the hot water resources in your home.
The advantages of the boiler include efficiency, durability, and the possibility of being integrated into a DHW system with recirculation. Let's look at what criteria need to be taken into account when choosing a household water heater.
Criterion #1 – tank volume
Useful volume is one of the important parameters, directly dependent on the number of residents and the frequency of hot water consumption.
With a properly selected boiler, there will never be a shortage of hot water, and family members will always be able to simultaneously use the shower, bathtub and all installed taps.
When buying a boiler, you can rely on general recommendations for volume:
- 1-2 consumers and 1-2 water points - 50-80 l;
- 2-3 consumers and 2-3 water points - 100-150 l;
- 4-5 consumers and from 4 water points – 200-250 l.
It must be remembered that water in small tanks heats up faster, in large tanks it takes longer, and regardless of the size of the tank, the heating rate also depends on the temperature of the coolant, if heating element not connected.
Criterion #2 – heating temperature
The water in the BKN never reaches 100°C, since it most often takes heat from the liquid from the heating circuit - and there the temperature usually does not exceed 90°C.
On average, the temperature inside the container heats up to 65-85°C. But keep in mind that some of the heat is still lost if the pipeline is long and passes through uninsulated areas, so water may enter the tap with a temperature lowered by 5-10 ° C.
Criterion #3 – installation method
Based on the position of the body, boilers are divided into vertical and horizontal. The first ones are more popular, the second ones can be found much less often - these are either small household "indirect", or huge production models.
According to the place of installation, all water heaters are divided into floor-mounted and wall-mounted. Wall mounting is only possible for tanks of limited capacity. Before purchasing, be sure to check whether your wall can withstand the installation of equipment, taking into account the weight with water.
In general, among BKN there are most vertical models with floor-mounted installation, less often with universal installation. From a safety point of view, floor-mounted options are more reliable.
Criterion #4 – material of manufacture
The material from which the outer and inner tanks are made affects wear resistance and service life.
To protect the internal surface from corrosion, various types of coatings are used, including:
- stainless steel;
- glass ceramics;
- enamel.
The first option is the most preferable; high-quality food-grade steel is used to protect expensive models. Enamel cracks over time due to constant temperature changes, and glass ceramics applied using the dry method are not inferior to a steel surface.
The outer casing is made of stainless steel, cheaper metal or heat-resistant plastic.
One of the best options for floor installation is a water heater made entirely of stainless steel. They are heavier and more expensive, but they are maximally protected from corrosion and leaks.
Criterion #5 – connecting the heating element
The introduction of an additional energy source is necessary in some cases:
- if the heating system, centralized or autonomous, is turned off for the warm season, maintenance or repair;
- if the coolant temperature is unstable and requires support;
- if the temperature from the heating circuit is not enough.
Before purchasing, be sure to check whether it is possible to connect a heating element: some models do not have it, others are designed to install 1-2 heating elements. Special pipes or inspection holes are provided for them.
You can read more about how to choose a boiler for heating water in this material.
Conclusions and useful video on the topic
Professional recommendations for choosing:
In the rating, we presented the best, according to buyers, indirect heating equipment for private use. For objectivity, not only the best aspects of boilers are indicated, but also their possible disadvantages.
If you are ready to share information about your water heaters or the intricacies of their connection, we invite you to join in the comments. Leave comments, suggestions and photos under the article, ask questions, which we will try to answer promptly.
