12 best indirect boilers

Review of the best according to the editorial board. On the selection criteria. This material is subjective and does not constitute advertising and does not serve as a purchase guide. Before buying, you need to consult with a specialist.

Among the wide variety of water heaters, buyers are particularly interested in indirect heating boilers. Outwardly, these models do not differ from conventional storage devices. Most often, manufacturers stop at a rectangular or cylindrical body shape. Indirect boilers have their pros and cons. Experts recommend paying attention to several technical parameters.

How to choose an indirect heating boiler

1. The power of the heater is selected taking into account the volume of the tank and the desired rate of heating the water. When studying the documents for the boiler, it is necessary to take into account the useful power of the device.
2. The capacity of the water heating tank depends on the number of users. To take a shower in the country for a couple of avid gardeners and gardeners, a 100-liter drive is enough. If the family is large, there are small children, then it is worth giving preference to more spacious boilers (200-300 l). But at the same time, the power of the heat exchanger must be greater so that the heating of the water does not drag on for a long time.
3. The heating rate also depends on the area of ​​the heat exchanger. To find the optimal combination, you can build on the following ratio. The rate of heating water with a volume of 120 liters with a coil area of ​​1 sq. m will be about 30 minutes.
4. The reliability and durability of the boiler is largely determined by the quality of the tank. The stainless steel tank will last the longest, but the price of such models is high. Manufacturers cover conventional steel tanks with enamel or glass ceramics. Additionally, magnesium anodes help to resist corrosion; they also protect the internal cavity from scale formation.
5. Thermal insulation helps to maintain the temperature of the water in the specified range. Budget boilers have a foam rubber layer; more modern products are equipped with polyurethane foam insulation.
6. Functionality. Various options help to minimize human intervention in the boiler operation. These are overheating protection, safety valve, thermostats and thermometers.
7. Number of points of water intake. With the help of a boiler, hot water can be supplied to several rooms. To do this, it is necessary to select a water heater with several draw-off points.

The 12 best indirect heating boilers participate in our rating. Some of the models managed to get there due to user reviews, while others received high marks from experts.

Which is better indirect heating boiler or gas boiler

Boiler type	Advantages	disadvantages
Gas	+ high power + fast water heating + easy setup and adjustment + several taps	– inconvenience of ignition – gas costs – high price
Indirect	+ effective thermal insulation + can be connected to different energy sources + high performance + no additional costs	– performance depends on the temperature of the coolant – large dimensions and weight – attachment to the source of energy

Rating of the best indirect heating boilers

Nomination	a place	Name of product	price
The best 100 l indirect heating boilers	1	ACV Smart 100	RUB 62,100
	2	Electrolux CWH 100.1 Elitec	RUB 26 900
	3	Gorenje GV 100	18 361 RUB
The best indirect heating boilers with a volume of 150 liters	1	Vaillant uniSTOR VIH R 150/6 B (BR)	RUB 39,451
	2	Baxi Premier Plus 150	RUB 42,040
	3	Hajdu AQ IND150SC	RUB 21,700
The best indirect heating boilers with a volume of 200 liters	1	Viessmann Vitocell-V 100 CVA-200	RUB 49,250
	2	Ariston BC2S CD2 200	RUB 56,580
	3	Hajdu AQ IND200SC	RUB 24 600
The best indirect heating boilers with a volume of 300 liters	1	ACV Smart Multi-Energy 300	RUB 114,000
	2	Buderus Logalux SU300	RUB 60,362
	3	Hajdu STA300C	RUB 36,400

The best 100 l indirect heating boilers

Indirect boilers with a small tank (100 l) are in demand among single residents or families of 2 people. Devices of this type are installed in apartments or summer cottages. The experts selected several models.

ACV Smart 100

Rating: 4.9

The most modern indirect heating boiler in design is the Belgian design ACV Smart 100. The water heater is a heat exchanger, where two stainless steel tanks are used. The tank-in-tank system is distinguished by the fact that the coolant heats the contents of the small tank over the entire area. This approach allows you to heat twice as much water in the same time than the traditional method using a coil. The maximum temperature is limited to 90 ° C.

Experts gave the first place in the rating of the model for high-quality thermal insulation. The manufacturer used polyurethane foam 50 mm thick, which is famous for its low thermal conductivity. Experts also speak flatteringly about the wavy surface of the tank, due to which self-cleaning from scale occurs.

Advantages

• modern design;
• effective thermal insulation;
• self-cleaning from scale;
• fast heating of water;

disadvantages

• high price.

Electrolux CWH 100.1 Elitec

Rating: 4.8

The indirect heating boiler Electrolux CWH 100.1 Elitec allows to heat water up to 100 ° С. In this component, it outperforms its competitors. The capacity of this small water heater is 390 l / h. Both the heat exchanger and the steel tank are covered with a double layer of glass enamel. To prolong the life of the boiler, a large magnesium anode is installed inside. The manufacturer also took care of thermal insulation, the water remains hot for a long time due to the use of insulation with a thickness of 75 mm. Additionally, you can install a heating element, which is important in the summer.

Although the device is somewhat inferior to the winner in innovation and efficiency, it is affordable, and the warranty period is 10 years.

Advantages

• high performance;
• reliable protective coating;
• effective thermal insulation;
• several points of water intake;

disadvantages

• small area of ​​the heat exchanger;
• heavy weight (55 kg).

Gorenje GV 100

Rating: 4.7

The Gorenje GV 100 boiler is sold at the most affordable price on the domestic market. The quality of the heater is quite high. The role of the heat source is played by a tubular carrier, which allows the boiler to be connected to different heating mains (even to central heating). Water can be heated up to 85 ° C, the manufacturer has provided several points of water intake. The model has all the basic options, this is a thermometer, indication of switching on and heating, protection against overheating, safety and non-return valve. The heat exchanger is made of stainless steel, and the steel tank is enamelled. The magnesium anode provides additional corrosion protection to the tank. Users do not make claims to the quality of workmanship, but the search for spare parts and mounting elements is becoming a serious problem.

Advantages

• universality of connection;
• low price;
• rich functional content;

disadvantages

• shortage of spare parts and components.

What is better indirect heating boiler or double-circuit boiler

HEATER TYPE	ADVANTAGES	LIMITATIONS
INDIRECT HEATING BOILER	+ LARGE VOLUME + QUALITY THERMAL INSULATION + MINIMUM DESCALING	– HIGH PRICE – LARGE OVERALL DIMENSIONS
TWO-CIRCUIT BOILER	+ AFFORDABLE PRICE + HIGH RELIABILITY + EASY TO USE	– LOW PRODUCTIVITY – LOTS OF DESCALING FORMS

The best indirect heating boilers with a volume of 150 liters

Boilers with a storage tank of 150 liters can provide hot water for residents of apartments or houses in the amount of 2-3 people. They have an affordable price and compact size. Here are some good water heaters.

Vaillant uniSTOR VIH R 150/6 B (BR)

Rating: 4.9

The indirect heating boiler Vaillant uniSTOR VIH R 150/6 B has a stylish appearance. It can be installed in any premises, the manufacturer has provided for vertical installation with a top strapping. The device allows you to heat water up to 85 ° C, and the inlet pressure can reach 10 atm. A powerful heat exchanger (25.5 kW) quickly heats the contents of the tank, and effective thermal insulation keeps the water hot for a long time. The tank is made of ordinary steel, which is covered with a layer of enamel. The magnetic anode becomes an additional way to protect the tank from corrosion.

The boiler was also recognized as the winner of the rating for its good equipment. The device has a thermometer, a drain valve and a non-return valve. The boiler can be connected to gas boilers or a central heating main.

Advantages

• stylish design;
• magnetic anode;
• fast heating;
• high water temperature;

disadvantages

• heavy weight (79 kg).

Baxi Premier Plus 150

Rating: 4.8

One of the most popular indirect heating boilers is the Italian model Baxi Premier Plus 150. The excellent quality of the product is recognized by experts in different countries. The storage tank is made of stainless steel, which is highly resistant to corrosion. Effective insulation made of polyurethane foam helps to minimize heat loss. A tubular coil will cope with fast and uniform heating of water.

The high strength and reliability of the boiler is perfectly combined with its lightness (31 kg), so the user can choose between wall or floor mounting.

The model occupies the second line of the rating, the Italian boiler does not reach the winner in terms of maximum temperature (65 ° C). And the price of the product is higher than that of competitors.

Advantages

• high efficiency;
• effective thermal insulation;
• lightness and compactness;
• high-quality assembly;

disadvantages

• high price;
• incomprehensible installation instructions.

Hajdu AQ IND150SC

Rating: 4.7

The Hajdu AQ IND150SC floor standing heater attracts the attention of potential buyers at an affordable price. The model is capable of serving several points with hot water. The manufacturer has provided for the possibility of installing an electric heater with a power of 2 or 3 kW. The inner surface of the tank is covered with glass enamel, which protects the steel from corrosion for a long time. The heat exchanger is made of ordinary steel with a protective enamel. Thermal insulation made of polyurethane foam in combination with a polymer paint and varnish layer on the outer surface allows the water to remain hot for a long time.

Experts gave the model the third place in the rating for limiting water heating to 65 ° C and a small heat exchanger area (0.81 sq. M).

Advantages

• affordable price;
• reliable thermal insulation;
• good equipment;

disadvantages

• coil leaks are noted;
• difficulties with service.

The best indirect heating boilers with a volume of 200 liters

Full-fledged families of 3-4 people need a lot of hot water, especially in the summer. Indirect heating boilers with a volume of 200 liters are capable of ensuring uninterrupted supply. The specialists have chosen the following models.

Viessmann Vitocell-V 100 CVA-200

Rating: 4.9

Users call the Viessmann Vitocell-V 100 CVA-200 boiler a reliable heating device. Its operation is stable, the unit is easy to operate, and its service life exceeds ten years. Powerful heat exchanger (36 kW) with an area of ​​1 sq. m quickly heats water up to 95 ° C. The protection of the steel tank is provided by an enamel coating; an additional magnesium anode is installed, which is powered from a third-party energy source. The manufacturer effectively insulated the tank from the outside world with an environmentally friendly insulation.

The boiler deservedly becomes the winner of the rating for the optimal combination of price and quality. Users are satisfied with the reliability and uniform heating of the water.

Advantages

• fast heating of water;
• long service life;
• high heating temperature;
• reliable protection against corrosion;

disadvantages

• not detected.

Ariston BC2S CD2 200

Rating: 4.8

To speed up the process of heating water with a volume of 200 liters to a temperature of 90 ° C, the Ariston BC2S CD2 200 boiler was equipped with two heat exchangers. Thanks to this constructive solution, it was possible to bring the heat exchanger area to 1.8 sq. m. The heater can be connected to gas boilers and solar collectors. The manufacturer applied comprehensive protection, the inner surface of the steel tank is covered with a layer of finely dispersed enamel. A magnesium anode helps fight corrosion. To reduce heat loss allows a layer of polyurethane foam. The thermostat prevents overheating of the water, the device has a safety drain valve. In the absence of water in the tank, protection against heating is provided.

The experts put the boiler in the second position in the rating for its high weight (111 kg).

Advantages

• two heat exchangers;
• high performance;
• the presence of protective options;
• durable anti-corrosion coating;

disadvantages

• great weight.

Hajdu AQ IND200SC

Rating: 4.7

The Hajdu AQ IND200SC indirect heating boiler was liked by specialists for its affordable price and stylish design. The model is capable of heating water up to 65 ° C at a maximum water pressure of 6 atm. Experts note the good power (32 kW) and the large area of ​​the heat exchanger (1.06 sq. M). To protect the inner surface of the tank, a glass-ceramic coating is applied, and the coil is made of an enamelled pipe. A magnesium anode helps fight corrosion. The manufacturer has provided for the possibility of installing an electric heater with a power of 2 or 3 kW.

Users note the lightness (69 kg) and compactness of the model, pleasant appearance and fast water heating. Only the build quality has some complaints.

Advantages

• affordable price;
• stylish design;
• fast heating of water;

disadvantages

• the temperature sensor falls out;
• leaks on gaskets.

The best indirect heating boilers with a volume of 300 liters

Indirect boilers with a 300 l tank are required by large families or employees of small firms and workshops. Only powerful appliances can quickly heat a large volume of water. Several interesting models are presented in our review.

ACV Smart Multi-Energy 300

Rating: 4.9

Another boiler with a progressive tank-in-tank system is the winner in our ranking. This is the ACV Smart Multi-Energy 300 model, which is a floor standing version of the water heater. The device is designed to provide hot water for cottages, offices and production workshops. A well-designed design allows you to connect the boiler to heating systems of residential and industrial facilities. Thermal power is 32 kW, however, the storage device is economical. This is due to the excellent thermal insulation, in 8 hours the water temperature drops by only 3 ° C.

The experts highly appreciated the use of stainless steel for the manufacture of tanks and components, which makes the boiler extremely reliable and durable. In addition, it is also the lightest (99 kg).

Advantages

• high power;
• reliability and durability;
• several points of water intake;
• high-quality manufacturing;

disadvantages

• high price.

Buderus Logalux SU300

Rating: 4.8

The high power of the Buderus Logalux SU300 indirect heating boiler is provided by a smooth-tube heat exchanger. It is able to quickly heat water up to 95 ° C. The manufacturer preferred to make the storage tank from ordinary steel; thermal glaze was used in combination with a magnesium anode for corrosion protection. Thermal insulation made of thick polyurethane foam (50 mm), which does not contain hazardous fluorine and chlorohydrocarbons, helps to maintain high water temperature.

The model took the second position not only because of the steel tank, the heavy weight (145 kg) also made a negative contribution. It is not surprising that the installation of the tank is provided only for floor-standing, and adjustable supports help to quickly align the boiler. Users like the model for the optimal combination of price and quality.

Advantages

• high-quality assembly;
• effective thermal insulation;
• powerful heat exchanger;

disadvantages

• great weight.

Hajdu STA300C

Rating: 4.7

The Hajdu STA300C indirect heating boiler has several advantages that helped it rise to the third position in the rating. First, the model is being sold on the domestic market at an affordable price. Secondly, the heater can be connected to different energy sources, from a gas boiler to a solar collector. The manufacturer uses the classic scheme of protecting the steel tank from corrosion (glass ceramics + magnesium anode). Heating efficiency is achieved by a powerful heat exchanger (45 kW) with a recirculation pipe. The possibility of installing an additional heating element is provided.

The boiler is not perfect in build quality, which prevented it from climbing higher in the rankings. Users note a number of minor flaws that they have to fix on their own.

Advantages

• connects to different energy sources;
• affordable price;
• installation of an additional heating element is allowed;

disadvantages

• the build quality is lame.

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Attention! This rating is subjective and does not constitute an advertisement and does not serve as a purchase guide. Before buying, you need to consult with a specialist.