The best indirect heating boilers for 2020

People who have just bought a small summer cottage are often interested in the question: "How to provide themselves with hot water?" Of course, you can buy a gas water heater, but not everyone wants to spend money on it. Therefore, an indirect heating boiler is more often purchased, which will provide home owners with constant access to hot water supply. The editors of the site "bestx.htgetrid.com/en/" have prepared for you a rating of the best models of indirect heating boilers for 2020.

What it is

The provision of an apartment and a house with heat, as well as hot water supply occurs thanks to a centralized system, which is carried out at the level of the city, a separate district, and in some cases there is an autonomous complex for specific houses.

Therefore, hot water supply is highly dependent on the operating modes of a particular system, and if a malfunction occurs, water is turned off for the entire city, district or buildings. However, in the modern world, hot water supply is always necessary, it is no longer reasonable to heat water in a pan, since most of the population does not buy dishes with an impressive capacity. Therefore, the right decision is to buy an indirect heating boiler. He will be able to give the owner independence from the heat supply. At the same time, it will quickly pay for itself and will serve for a long time.

It is important to remember that an indirect water heater will not be able to fully function without a proper heat source. Therefore, it is recommended to place it near an autonomous heating boiler.

How BKN works

The indirect heating boiler consists of a special metal tank, which has reliable thermal insulation with polyurethane or mineral wool on the outside (depending on the model), and inside it is carefully finished with ceramics or enamel. The capacity of such a unit can be either 10 liters, or all 300 or more.

On the outer side of the body, nozzles are mounted, which are necessary for conducting pipes for supplying and removing water. In addition, most devices have a pressure and temperature sensor that allows you to monitor the current state of water, as well as inspection hatches. One or two coil-shaped heaters are located inside the boiler. So hot water flows through a bent pipe, which comes from an autonomous boiler or an electric heater, a special pump, etc.

To ensure that the temperature always remains at a certain level, all boilers are equipped with a special thermostat. Its job is to adjust the values ​​in case the indicators do not correspond to the specified ones. To do this, he temporarily turns off the heat source.

In order to prevent an increase in the volume of water due to thermal expansion, a special expansion tank of 10 liters is mounted in the system. In addition, it provides for the installation of a special valve, which instantly triggers when the water reaches a critical value.

So that heating does not slow down and occurs, even when the heat supply is turned off or when extreme heating loads occur, a heat electric heater (TEN) is present in the design. Thus, ordinary tap water enters the tank, where it is heated, and enters the owner through the mixer taps, which is a practical and effective solution.

Advantages and disadvantages of an indirect heating boiler for DHW

The obvious advantages of such a system include:

• Free operation of the device. The owner does not need to pay additional costs associated with electrical energy.
• To get hot water, you just need to open the tap. There is no need to stand by the sink and wait for all the cold to pass.
• Thanks to the recirculation that takes place in a confined space, the chances of harmful bacteria infecting the water are extremely low.
• The inner coil does not need to be constantly cleaned and washed, because scale formation is impossible there for one reason: the inner surface of the heater has excellent protection against the penetration of running water.
• Regardless of the selected time, there will always be hot water in the boiler, this makes it possible to use more than 2 tapping points.
• To protect the heating element, which is located inside the BKN, from corrosion, the manufacturer equipped the device with a magnesium anode, which works efficiently and reliably.

But besides the advantages, there are a couple of disadvantages in this type of boiler:

• Full functioning is impossible without a heat source, so heating will not occur.
• In summer, it is necessary to connect an additional heating element, because the main heat supply is turned off.

What are the types and models of the device

Indirect heating boilers are sold in two versions: classic and combined. The main difference between the former is that they do not have their own heating element and only use a heat carrier that works from a heating network. And the second one has a built-in electric heating or another device that will work properly at the time the central heating supply is turned off. Most consumers prefer the latter category, as it is more practical and versatile, although it costs several times more than the classic options and has a more complex installation.

What are the types of BKN

Depending on the chosen company, the final product will differ in technical component, and in some cases in appearance. So there are devices that contain several coils in their arsenal. Models of this type are connected to several heat sources. In addition, there are options with several points of collection of DHW.

There are also boilers on the market, more often these are budget types that do not have a coil. So their design is made of two tanks. The principle of operation of such a system is as follows: a large capacity plays the role of a heat carrier, and hot water is heated in a smaller tank. Despite such a strange design, its advantage over the expensive type is high-speed heating, which takes half the time.

Criteria for choosing an indirect heating boiler

Before proceeding with the selection of a device, a person needs to know what to look for first.

1. The first thing that is paid attention to is the presence of autonomous heating in a private house. If the answer is no, then there is no point in buying a boiler.
2. The most important thing to consider is the capacity of the tank, everything is simple here, the more people in the family, the higher the volume. For example, 80 liters will be enough for one owner, and if 3 people live in the family, then the BKN for 120 liters will become an actual option, more than this value - 150 liters. And this is not taking into account possible economic matters that will require additional expense.
3. It is important to correctly calculate the power of a working autonomous boiler for heating. So, if the value is 35 kW, then the maximum capacity will be 200 liters.
4. We must not forget that the life of the device directly depends on the quality of the inner coating. The most budgetary option is an enamel coating, its main drawback is that over time it begins to crack from temperature changes. After the protective layer is gone, the product, namely the metal part, becomes vulnerable to corrosion.A good and high-quality coating - glass-porcelain, of course, the cost will increase significantly, but the efficiency remains high. Also, titanium coated products or a stainless steel tank are perfect. But finding the first one on the Russian market is very difficult, because the price tag for it is very high.
5. Quality coil tubes are not steel, as some think, but copper or brass. The service life of such elements is much longer, while they are easier to maintain.
6. Also, when buying a boiler, you need to look at the material of the external thermal insulation, because it determines what temperature the water will have. The ideal option is polyurethane foam insulation. Although its cost is higher, the efficiency is much higher than that of cheap devices.
7. A correctly chosen installation site will make it possible to reduce the search circle several times.
8. It is important to know that the owner himself should monitor the condition of the equipment; problems will not be revealed on their own, since this is not production equipment.

Rating of the best models

Hajdu ID 20A

A good model that would be great for a single owner. Because the volume of the tank is 80 liters. The maximum heating temperature is 95 degrees Celsius. There is a reliable protection system consisting of a magnesium anode. There is a recirculation line inlet to reduce the risk of harmful bacteria. The inner lining of the tank is enamel, so a person needs to be prepared for possible malfunctions in the future. The heat exchanger area is 0.62 square meters, while the maximum power is 18.5 kW. Installation method - vertical with wall mounting. The service life declared by the manufacturer is 10 years, the warranty is 2 years.

The average cost is 11 550 rubles.

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Drazice OKC 125 NTR

High quality floor standing boiler for a family of two. The capacity of the water storage and supply tank is 112 liters. The maximum heating temperature is 90 degrees. There is a convenient indication that notifies about the current state of the device. There is high-quality protection against overheating with a safety valve, which allows you not to worry about the current state of the unit. A magnesium anode is also present. The fourth degree of protection against water. The inner lining of the tank is enamel. The maximum power of the device is 32 kW. Dimensions - 524x1067x524 mm, placement method - floor, vertical. Weight - 66 kg. The boiler is covered by a two-year warranty.

The average price is 18,240 rubles.

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Protherm FE 200/6 BM

An expensive boiler for a large family. The maximum heating temperature is 80 degrees. Tank capacity - 184 liters. The pressure that is obtained at the outlet varies from 1 to 6 atmospheres. The control of the device is completely mechanical, there is a thermometer and a temperature limiter, which increases the service life. Coil protection is standard as well. The only drawback is the enamel finish. Heater placement - floor-standing, vertical. Weight - 97 kg. 2 year warranty.

The average cost is 32,000 rubles.

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Kospel Termo Hit WW

An unusual device, with a maximum capacity of 80 liters, will be an excellent replacement for an outdated water heater. The maximum heating temperature is 80 degrees, while there is the possibility of additional installation of the heating element. There is a complete protection against scale formation. The maximum power of the heat exchanger is 9.50 kW. The placement method is horizontal. Weight - 26.5 kg. The manufacturer gives a 1 year warranty for the device.

Sold at a price of 10,000 rubles.

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Drazice OKC 200 NTR / BP

A good model with a maximum capacity of 208 liters, will be an excellent assistant in the family when the hot water supply is turned off. The water temperature reaches 90 degrees. There is magnesium protection, which protects the tubes from scale formation. The coating inside the boiler is enamel, which must be handled carefully and not create conditions for a sharp temperature drop. Heat exchanger area - 1.45 sq. m, while the maximum power of the water heater is 32 kW. The device is placed vertically, with floor mounting. Weight - 92 kg. The warranty period is two years.

The average cost is 27,300 rubles.

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Nibe-Biawar Mega W-E300.81

An excellent model with a maximum capacity of 300 liters and a maximum heating of 95 degrees, will help in any situation. The device is controlled mechanically. There is an effective thermostat and temperature limiter. For protection, the manufacturer has equipped the device with an excellent anode that will eliminate the formation of scale. The inner coating is enamel, but with good handling, the boiler will last over a decade. Weight - 150 kg.

The average price is 60,000 rubles.

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Roda Kessel ILW 200 B

A good water heater with an impressive volume of 200 liters and an outlet pressure of up to 7 atmospheres. There is a convenient indication that allows you to monitor the current state of the device. There is a full-fledged temperature limiter, which significantly increases the efficiency of the device. For greater safety, the manufacturer has equipped the boiler with overheating protection. Covering - enamel. The maximum power is 32 kW.

The average cost is 28,000 rubles.

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Hajdu STA300C

A high-quality device with a glass-ceramic coating that will serve the owner for a long time. The maximum capacity of the tank is 300 liters, which is enough to provide hot water for a family of 5 people. The maximum heating temperature is 95 degrees. The pressure that forms at the inlet is 7 atmospheres. There is one active magnesium anode which keeps the inner element clean. The maximum power of the heat exchanger is 45 kW. There is a possibility of installing additional heat elements. The placement method is vertical. The warranty is 5 years.

The average cost is 39,970 rubles.

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Finally

Water heaters are one of the best inventions. Indeed, thanks to them, a person does not feel discomfort when the hot water is turned off and no longer has to waste gas on heating large pots. If you have experience of using indirect heating boilers described in the rating, or brighter representatives, tell us about it in the comments.