A well-functioning hot water supply system in a private house is a guarantee of a comfortable stay both in winter and summer. Agree, without it, it is much more difficult to take a shower or wash baking trays covered with grease.
But even with a high-performance boiler, the heated water may not be enough to serve all family members. And then the DHW system is supplemented with an indirect heating boiler, which raises the water temperature due to the already installed equipment.
We offer together with us to identify the best indirect heating storage water heater: how to choose a boiler, we will find out after analyzing the rating of current models. Among the top-end household water heaters there are productive models with a high degree of protection and decent efficiency, designed for servicing residential buildings.
The content of the article:
-
Indirectly heated DHW cylinder
- Budget models
- Middle and expensive segment
-
Criteria for choosing an indirect heating boiler
- Criterion # 1 - tank volume
- Criterion # 2 - heating temperature
- Criterion # 3 - installation method
- Criterion # 4 - material of manufacture
- Criterion # 5 - connecting the heating element
- Conclusions and useful video on the topic
Indirectly heated DHW cylinder
A place
Product
Rating
Volume of the tank
Mounting method
Tank cover
Price
Budget models
#1
98
/ 100
80 l
wall-mounted horizontal
enamel
#2
97
/ 100
150 l
floor vertical
enamel
#3
96
/ 100
200 l
floor vertical
glass ceramics
#4
95
/ 100
200 l
floor vertical
enamel
#5
93
/ 100
300 l
floor vertical
glass ceramics
Middle and expensive segment
#1
97
/ 100
150 l
universal vertical
stainless steel
#2
95
/ 100
160 l
universal vertical
stainless steel
#3
94
/ 100
184 l
floor vertical
enamel
#4
93
/ 100
200 l
universal vertical
stainless steel
#5
90
/ 100
300 l
floor vertical
stainless steel
1
Kospel Termo Hit WW 80
2
Gorenje GV 150
3
Hajdu STA200C
4
Drazice OKC 200 NTR
5
Hajdu STA300C
Middle and expensive segment1
BAXI Premier Plus 150
2
ACV Comfort 160
3
Protherm FE 200/6 BM
4
BAXI Premier Plus 200
5
ACV Smart Multi-Energy 300
Budget models
#1
Kospel Termo Hit WW 80
Practical and efficient water heater at a reasonable price
Expert rating:
98
/ 100
The WW series horizontal heat exchanger is equipped with a robust double coil for continuous heating and storage of water. It is great for working in tandem with a solid fuel boiler, it can be part of a heating system with an external circuit - for example, a stove.
The steel surface of the tank is covered with powder enamel automatically at the factory, the enamel layer is of optimal thickness. The 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 to the heat exchanger. If necessary, you can install an electric heating element.
Specifications:
- Max. heating - 80 ° С;
- 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.
Advantages
- Rapid heating
- Possibility of connecting heating element
- Wall mounting
disadvantages
- Small volume
- No indication
#2
Gorenje GV 150
Boiler with high efficiency and reliable thermal insulation
Expert rating:
97
/ 100
The indirect water heater GV 150 is made of high-quality enamelled steel. Floor standing requires a separate space in the boiler room, but to save space, it can be placed directly under the wall-mounted boiler.
The traditional method of protection against corrosion is a built-in magnesium anode. Non-return valve and overheating protection provided. The boiler is equipped with a tubular 4-liter heat exchanger, which is characterized by increased performance and a large area.
For economical consumption of heat energy and minimum heat loss, the tank is protected by high quality environmentally friendly insulation. Control - mechanical, indication signals the inclusion and heating.
Specifications:
- Max. heating - 75 ° С;
- 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 is also connected to central heating.
Advantages
- Large tank volume
- High quality thermal insulation
- Convenient control
disadvantages
- Heavy weight
- Floor standing installation
#3
Hajdu STA200C
Effective water heating with the ability to connect 2 heating elements
Expert rating:
96
/ 100
Floor-standing vertical model STA200C is made of high-quality steel, covered with durable glass-ceramic on the inside, and is designed to heat 200 liters of water. Works with boilers of any type, including gas boilers.
It is possible to connect 1-2 heating elements. Due to its large volume, it can simultaneously serve several water supply points - for example, a faucet in the kitchen and a shower.
The heat exchanger is installed at the bottom and is designed for a maximum power of 30 kW. The water inlet is lateral, which allows water to be drained if necessary. The outer casing is made of plastic
Specifications:
- Max. heating - 95 ° С;
- tank volume - 200 l;
- number of heat exchangers - 1;
- installation - floor, vertical;
- eyeliner - side;
- weight - 74 kg;
- thermometer - yes.
The volume of the tank is sufficient to serve a family of 3 people. The manufacturer has other, more voluminous modifications - from 300 to 1000 liters.
Advantages
- Quiet operation
- High efficiency
- Low power consumption
disadvantages
- Possible factory defect
#4
Drazice OKC 200 NTR
Reliable and unpretentious water heater with convenient control
Expert rating:
95
/ 100
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 nominal capacity allows the production of large volumes of industrial water.
The inner part is finished with enamel and a magnesium anode is installed, due to which there is no 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 steplessly adjusted using a mechanical control. The light indication helps to monitor the heating process, and the thermometer helps to control the temperature.
Specifications:
- Max. heating - 95 ° С;
- 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. Recommended by the manufacturer for installation not only in residential, but also in industrial premises as an additional stationary water heater.
Advantages
- Large tank volume
- Uncomplicated connection
- Temperature control
disadvantages
- Possible leaks at the joints
#5
Hajdu STA300C
Always hot water for a friendly big family
Expert rating:
93
/ 100
The closed model STA300C is designed for floor installation, designed for heating 300 liters, equipped with one bottom heat exchanger. It can serve several draw-off points. It is possible to install 1-2 electric heating elements with a capacity 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 by polyurethane insulation and a plastic casing.
Heating water in the boiler can be carried out by any type of boiler, as well as using a solar collector.
Specifications:
- Max. heating - 95 ° С;
- tank volume - 300 l;
- number of heat exchangers - 1;
- installation - floor, vertical;
- eyeliner - side;
- weight - 100 kg;
- thermometer - yes.
The volume of the tank is sufficient for servicing a large cottage in which a family of 4-6 people lives. If desired, you can purchase a water heater of a larger or smaller volume: the line includes modifications from 200 to 1000 liters.
Advantages
- Glass ceramic coating
- Built-in thermostat
- Low power consumption
disadvantages
- No clear installation instructions
- Large dimensions
Middle and expensive segment
#1
BAXI Premier Plus 150
Great option for a small country house
Expert rating:
97
/ 100
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 ones. The set 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-coil brand has been introduced, which consists in the optimal placement of the heat exchanger. It is installed in the depth of the tank so that the water is heated as quickly as possible and spreads in different directions.
The inner lining is made of DUPLEX steel, which is durable and resistant to corrosion. Installation is simple, all connections are placed in a convenient place.
Specifications:
- Max. heating - 65 ° С;
- 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 building with boiler equipment. It is quite voluminous, the heated water is enough for a family of 3-4 people.
Advantages
- Wall mountable
- Fast water heating
- High-quality assembly
disadvantages
- Incomprehensible installation instructions
- Marriage of individual elements
#2
ACV Comfort 160
A cost-effective solution for consumers with high water requirements
Expert rating:
95
/ 100
Indirect water heaters of the Comfort series with a tank volume of 160 liters are intended for use in single-family houses with increased requirements for hot water. It can be installed on the floor or on the wall - the hardware is supplied as an option.
The design of the heat exchanger is based on the "tank in a tank" technology: the inner tank contains sanitary water, the outer one contains technical water. The inner tank is made of corrugated stainless steel, the outer casing is made of heat-resistant plastic, between them there is a strong heat-insulating layer of polyurethane.
Self-cleaning technology is realized due to the undulating surface. The heat transfer area is increased, due to which the boiler can easily serve several water supply points.
Specifications:
- Max. heating - 95 ° С;
- tank volume - 160 l;
- number of heat exchangers - 1;
- installation - universal, vertical;
- eyeliner - top;
- weight - 47 kg;
- thermometer - yes.
The volume of the tank is enough to heat up enough water for a family of 3-4 people with a small child.
Advantages
- Fast heating of cold water
- Self-descaling function
- High performance
disadvantages
- External tank not protected against corrosion
#3
Protherm FE 200/6 BM
A successful combination of high performance and safety
Expert rating:
94
/ 100
The floor-standing cylindrical model FE 200/6 BM is designed to heat 184 liters of water and support temperature of the set parameters, it is recommended by the manufacturer for use together with boilers with a capacity up to 100 kW.
Protection against scale and corrosion is thought over - a traditionally preinstalled magnesium anode and enamel treatment of the inner surface of the tank. To reduce heat loss, a polyurethane heat-insulating layer is provided.
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 heat the right amount of water faster.
Specifications:
- Max. heating - 80 ° С;
- 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.
Advantages
- Operational heating
- High-quality assembly
- Convenient and clear connection
disadvantages
- No thermal sensor
#4
BAXI Premier Plus 200
Spacious model with coil-in-coil technology
Expert rating:
93
/ 100
The Premier Plus series is designed for comfortable home use. The model is equipped with an expansion tank that compensates for pressure differences. The equipment is distinguished by reliability, safety, all types of protection - from scale, corrosion, overload.
Brand development - "coil in coil": a heat exchanger is placed deep in the tank to quickly and uniformly heat the water. The water heater is compatible with various types of boilers, including condensing boilers.
Wall and floor installation possible. The body is made of DUPLEX stainless steel - a light, corrosion-resistant metal. The connections to the system are conveniently located at the front.
Specifications:
- Max. heating - 65 ° С;
- 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, it is also suitable for a large family.
Advantages
- Universal installation
- Convenient mechanical control
- Mounting key included
disadvantages
- Possible factory defect
#5
ACV Smart Multi-Energy 300
Efficient and efficient boiler for floor standing installation
Expert rating:
90
/ 100
The model from the Multi-Energy series is designed for servicing large cottages. The water is heated from the heating system, which can be replaced with a heating element purchased separately. Can be connected to high / low temperature circuit.
The hot water tank is made of high quality stainless steel that does not lend itself to corrosion. Heat loss is minimized by rigid polyurethane insulation hidden under a plastic casing. The thermostat sleeve is located next to the coil.
The set includes a control panel. Water up to + 80 ° С is heated within 45 minutes.
Specifications:
- Max. heating - 90 ° С;
- tank volume - 300 l;
- number of heat exchangers - 1;
- installation - floor, vertical;
- eyeliner - top;
- weight - 99 kg;
- thermometer - yes.
Due to the large volume, a hot water tank is often purchased for country cottages with an autonomous heating system.
Advantages
- Effective heating
- Bulk tank
- Simple controls
disadvantages
- Takes up a lot of space
Criteria for choosing an indirect heating boiler
With the help of a volumetric container that produces heating thanks to an already installed heating system or additionally connected equipment, you can significantly increase the hot water resources in the house.
More often, the BKN is installed near the boiler, which provides heating of water for heating the house, and the DHW circuit is connected. Thus, it becomes part of the general house water supply system.
The advantages of the boiler include efficiency, durability, the ability to integrate into the DHW system with recirculation. Let us analyze what criteria must be taken into account when choosing a domestic water heater.
Criterion # 1 - tank volume
The useful volume is one of the important parameters that directly depends 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 can always use the shower, bath and all installed taps at the same time.
For a large water heater, especially a floor-standing one, it is necessary to provide a special room. Usually this is a boiler room in which the rest of the equipment is installed.
When buying a boiler, you can focus on general recommendations for volume:
- 1-2 consumers and 1-2 points of water intake - 50-80 l;
- 2-3 consumers and 2-3 draw-off points - 100-150 l;
- 4-5 consumers and from 4 water points - 200-250 liters.
It must be remembered that water heats up faster in small tanks, longer in large ones, 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 ° С, since it most often takes heat from the liquid from the heating circuit - and there the temperature usually does not exceed 90 ° С.
To control the temperature, a temperature sensor is installed inside the tank, connected to a thermometer. With it, you can monitor the parameters, and if adjustment is provided, then adjust the desired temperature.
On average, the temperature inside the container heats up to 65-85 ° C. But keep in mind that some of the heat is also lost if the pipeline is long and passes through non-insulated sections, so water can enter the tap with a temperature lowered by 5-10 ° C.
Criterion # 3 - installation method
According to the position of the body, boilers are divided into vertical and horizontal. The former are more popular, the latter can be found much less often - these are either small household "indirect", or huge production models.
At the place of installation, all water heaters are divided into floor-standing and wall-mounted. Wall mounting is only possible for tanks with limited capacity. Before buying, be sure to make sure that your wall will withstand the installation of equipment, given the weight with water.
The vertical form of the water heater is more convenient for floor mounting - the base takes up much less space, and connection and maintenance is much easier
In general, among BKN most of all are vertical models with floor standing, less often with universal installation. From a safety point of view, outdoor options are more reliable.
Criterion # 4 - material of manufacture
The material from which the outer and inner tanks are made affects the durability and service life.
To protect the inner surface from corrosion, various types of coatings are used, including:
- stainless steel;
- glass ceramics;
- enamel.
The first option is the most preferred, high quality food grade steel is used to protect expensive models. The enamel cracks over time from constant temperature changes, and glass-ceramics, applied by a dry method, are not inferior to a steel surface.
The outer casing is made of stainless steel, cheaper metal or heat-resistant plastic.
The metal of the outer tank is coated with heat-resistant paint, which serves throughout its entire service life. If the paint peels off, and the metal under it rusts, it is better to replace the boiler in a timely manner with a better one
One of the best options for floor-standing 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 temperature of the coolant is unstable and requires support;
- if the temperature from the heating circuit is insufficient.
Before buying, be sure to check if there is a possibility of connecting a heating element: some models do not have it, others are designed for the installation of 1-2 heating elements. For them, special branch pipes or inspection holes are provided.
For more information on how to choose a boiler for heating water, see this material.
Conclusions and useful video on the topic
Professional recommendations for choosing:
In the rating, we presented the best, in the opinion of 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.
