Gas boilers heating wall reliability. Review and rating of double-circuit wall-mounted gas boilers. Consider the main advantages of Buderus Logano G334

The floor boiler is designed to operate on natural or liquefied (requires conversion) gas. High power allows you to heat not only residential premises, but also production areas up to 320 m2. To supply hot water, it is possible to connect a boiler.

A 5-section cast-iron heat exchanger will ensure reliability and increase the service life (due to the fact that cast iron is 2 times less susceptible to corrosion than steel). For stable operation from the network, a voltage stabilizer is required.

Since the Vaillant atmoVIT VK INT 324 1-5 boiler has an open combustion chamber, installation is required vertical chimney for the natural removal of combustion products. The control system with a display makes it easy to set up and control the operation of the boiler.

Pros:

• Possibility of connection of a boiler.
• Gas control system.
• Automatic diagnostics.
• Reliable operation.

Minuses:

• The expansion tank is not included.
• Heavy weight (99.9 kg).

1 Viessmann Vitogas 100-F GS1D871

Today in the market of heating equipment a large number of various heating devices, which are produced by different manufacturers. This also applies to heat generators operating on natural gas. In the article we will present the rating of gas boilers.

We will consider the most common models, based on the number of circuits in the units, as well as on the type of execution.

Rating of double-circuit gas boilers

When choosing wall-mounted double-circuit gas boilers, many criteria should be taken into account. But in the first place, everyone looks at the reliability of the equipment. We also took this parameter into account and compiled a list of the most popular models that are highly reliable.

Baxi

Wall mounted gas boiler Baxi LUNA-3 240 i

In the rating of double-circuit gas boilers in terms of reliability, there are models from the Slim, Luna, Nuvola lines. Reviews about steel rulers are not very good, for this reason they are not included in this review.

A classic representative of products manufactured by Baxi is the double-circuit wall-mounted boiler LUNA-3 240i. This heater has a power of 24 kW, the performance of the hot water circuit is in the range from 9.8 to 13.7 l / min. The primary heat exchanger is made of copper, which is a definite plus, because. this material is characterized by strength and reliability. The boiler is fully adapted to domestic working conditions.

Another outstanding model is Baxi Nuvola-3 Comfort 240 Fi. The device has high performance, efficiency reaches 90% and above. The thermal power of the device is 24.2 kW, the primary heat exchanger is made of copper. The DHW circuit can prepare 14 l/min. You can connect the underfloor heating system. Also included in the design of the unit is a boiler.

Some experts are of the opinion that last years The quality of Baxi's products fails. In addition, most heating units have begun to be produced in China, and this causes some concern.

Protherm

Boiler Protherm Cheetah 23 MOV

Heating devices of this brand are in great demand among users. The Cheetah 23 MOV model with a power of 23.3 kW and a hot water supply circuit capacity of 11 l / min is not efficient enough in operation, but it will be quite enough for one water intake point. Boiler performance - high, from 90%, can function in conjunction with underfloor heating. The package of the device includes strapping and numerous systems.

A series of double-circuit gas boilers Proterm Panther is distinguished by good quality and reliability. The range includes models with power from 25 to 30 kW. The equipment is characterized by high efficiency, which can reach up to 90%. Boilers with a combustion chamber of both closed and open type are produced. The performance of hot water circuits reaches 14 l / min.

Vaillant

The units produced by this manufacturer have good technical and operational characteristics and their cost is quite acceptable. One of the most popular models that have become widespread is a gas boiler. Vaillant eco TEC pro VUW 240/5-3. Its power is 24 kW, the combustion chamber is open, the package includes built-in piping and electronic control, which allows you to connect external control units.

Condensing boiler Vaillant eco TEC plus 246

Also high indicators of strength and reliability has a wall-mounted double-circuit gas boiler. This unit belongs to the group of condensing units. The thermal power is 20 kW, the efficiency is more than 100%. According to the manufacturer producing such equipment, devices in the process of supplying heat to premises can save up to 10% of gas. The combustion chamber of such a device is closed, the design includes a harness.

Double-circuit gas boilers from Vaillant are gaining great popularity every year, because. high quality, reliability and resistance to breakage make them attractive in the eyes of users.

Immergas

This trademark not as popular on the Russian market as those described above, but many of its models deserve attention. For example, a double-circuit convection gas boiler Immergas Nike Star 24 3 with a power of 23.6 kW. The equipment includes an open combustion chamber, it is characterized by high efficiency and good economic performance. The only drawback is associated with the hot water circuit - the maximum amount of water that it can pump is 11.1 l / min.

Also included in the rating is another heating device manufactured by Immergaz - this. The performance of this model is very high, efficiency - 93%. The unit is turbocharged, for its operation it is necessary to mount a coaxial chimney. The equipment package includes circulation pump and an expansion tank of 6 liters. The maximum productivity of hot water is 11.1 l / min.

Gas boiler Immergas Eolo Star 24 3 E

Bosch

Bosch has become widely known throughout the world and has established itself as a company that produces high-quality and reliable equipment. Model Bosch Gas 6000 W WBN 6000-24 C considered one of the most successful and sought after. Its advantages:

• acceptable price;
• the heat exchanger is made of copper, which indicates its strength;
• the risk of breakdowns is minimized;
• management is not difficult.

The power of the described device is 24 kW, the coolant temperature in heating circuit does not exceed 82°C. The combustion chamber is closed. This double-circuit gas unit well suited for operation in the Russian climate and is able to withstand power surges, gas pressure and water pressure in the water supply.

Of the samples that have low power, we can note the Bosch Gaz 6000 W WBN 6000-18 C, which is an analogue of the previous model, only with a lower power equal to 18 kW.

Boiler Bosch Gaz 6000 WBN 6000-24 C double-circuit

The boiler operates without loss of power at reduced pressure in the gas line. The device can work in parallel with the water heater, for this it has special connectors. Productivity - high, efficiency - from 90%. The average price category for such devices is 50,000 rubles, which will not be affordable for everyone.

Baxi FOURTECH 1.24F

This model is very popular, the combustion chamber of the device is closed, there is also a turbocharger and a forced smoke exhaust system.

Wall-mounted gas boiler Baxi Fourtech 24 F

Due to the modulation of the flame in the burner, it is possible to change the heat output in the range from 9.3 to 24 kW. The maximum heat load is 25.8 kW. The heat exchanger is made of copper, and a water pump is also included in the package, providing forced circulation coolant in the system.

An expansion tank of 6 liters makes it possible to compensate for the expansion of the coolant during its heating.

In order for the unit to be convenient in operation, it is equipped with an indication of modes, auto-ignition, and a built-in thermometer. Safety is achieved by protecting the heat exchanger from overheating, the blast valve, the gas control system. The unit is equipped with an automatic self-diagnosis function. The efficiency of the device is from 90%. The average cost is approximately 32,000 rubles. As disadvantages, one can note the fact that some models have shortcomings with gas valve.

Neva Lux 8618

Such a sample is a single-circuit unit, which is small in size. This boiler is produced Russian manufacturer"Gazapparat". The highest power of the device is 18 kW. The manufacturer claims that it is quite enough to supply heat to an apartment or a medium-sized private house, whose area reaches 180 m².

Boiler NEVA LUX 8618

The device is equipped with an open combustion chamber, so a separate chimney is required and another condition for its successful operation is high-quality ventilation in the room where it stands. Thanks to the atmospheric burner, the boiler functions practically without making any sounds.

The material of manufacture of the heat exchanger is copper, which ensures high performance of the device, the efficiency reaches up to 90%. The amount of gas consumed is 2.13 m³/h. When the equipment is converted to work on liquefied gas, the flow rate is 1.59 kg / h.

Such a device is very simple and easy to operate, because. the package includes auto-ignition, and the temperature and pressure indicators are displayed on the front panel of the unit. Operational safety is achieved thanks to the gas control system on the water circuit and protection against overheating of the heat exchanger.

Key feature The described model is considered low fuel consumption and ergonomic design. You can connect, floor heating system, air turbines, external thermostat. The cost of the device is 20,000 rubles. As disadvantages, it can be noted that without an external thermostat, the device often turns on and off.

NEVA-8230-1

This model is used for apartment heating in multi-storey buildings and private houses, the size of which reaches 300 m². The equipment includes a firebox closed type, the performance is 30 kW. Exhaust gas removal is forced, it is possible to use separate and.

Wall-mounted single-circuit gas boiler NEVA LUX - 8230

The main difference between the device is the continuous modulation of combustion. The heat exchanger is constructed of copper, it is not subject to low-temperature oxidation, and the unit is also characterized by automatic ignition with flame level control.

You can connect a water heater, and you can also transfer the gas boiler to work on liquefied gas. The main advantage of this boiler unit is the precise maintenance temperature regime, and also a plus is the fact that a propylene glycol-based coolant can be used.

Which gas boiler is better? I answer from my point of view. For 10 years my team has been installing heating systems. We have been servicing gas boilers in the Krasnogvardeisky district of Adygea for more than eight years.

During this time, I have accumulated statistics on the maintenance of gas boilers. I warn you that I will express my point of view and my personal opinion and judgment, it may not coincide with the opinion and point of view of some manufacturers.

The gas boilers I am considering belong to the budget segment. Boilers more expensive than 50,000 rubles, you will not find here.

Gas double-circuit wall-mounted boiler - which is better for heating a private house.

How to make heating in a private house

Any story begins with the fact that a person has a house and needs to be heated somehow. If there is network gas nearby, then everything is fine. It remains to make a heating system in the house.

There are two ways:

• Make a heating system for a private house with your own hands
• Hire heating installers

How to make a heating system with your own hands, I will tell you another time. Suppose that the customer has chosen the second path and agreed with us on the installation of heating. I meet educated customers, they already know where radiators will be installed, and where there will be a warm floor.

They usually ask me questions like:

• Which pipes are better and why?
• Why so long?
• What's so expensive?

In this article I will tell you how to choose a gas boiler for a private house. What is the most reliable gas boiler and why do I think so.

I will not consider domestic manufacturers of gas boilers, such as Neva, Lemax, Siberia, and others. There are not many of them, they, in my opinion, have a very small market share. It's extremely rare for me, so I can't draw any conclusions.

Gas boilers the best manufacturers

European manufacturers: VIESSMANN (Vissmann), VAILLANT (Vailant), BUDERUS (Buderus). German organizations that have given the globalization of production in Turkey, Russia, China. This trio specializes in thermal equipment. They fill the niche of thermal energy sources. From gas wall and floor boilers to heat pumps. They also produce solid fuel, diesel and electric boilers.

Italian manufacturers: FONDITAL (Fondital), ARISTON (Ariston), BAXI (Baksi), FERROLI (Ferolli).

Korean manufacturers: NAVIEN (Navien), KITURAMI (Kiturami), KOREASTAR (Koreastar) and MASTER GAS SEOUL (Master Gas Seoul).

Chinese manufacturers: OASIS (Oasis) and ROSTERM (Rosterm).

The most reliable gas boiler

In my opinion, the most reliable Viessmann gas boiler. Just like car manufacturers have small, middle class and business class, so boiler manufacturers segment their boilers to capture market share as much as possible, and Viessmann has cheap and expensive models of boilers.

Viessmann has a running budget model of a double-circuit gas wall-mounted boiler VITOPEND (Vitopend), with a capacity of up to 35 kW. They are relatively inexpensive, Viessmann Vitopend 100-W can be bought for 45 thousand rubles.

Rating of gas boilers in terms of reliability and quality 2017

1. VIESSMANN VITOPEND 100-W
2. ARISTON EGIS PLUS 24 F
3. BAXI MAIN 5 24F
4. BUDERUS LOGAMAX U072-24K
5. FONDITAL MINORCA CTFS 24
6. IMMERGAS EOLO MYTHOS 24 2 R
7. DAEWOO 200MSC

The best double-circuit gas boiler - installer review

In my opinion, VIESSMANN has a balanced balance of simplicity and at the same time reliability and quality. In complex equipment, this balance is incredibly difficult to maintain. Vaillant, in my understanding, is trying to be as technologically advanced as possible. Although Wissmann sometimes slips this too. The last line of Vitopend, it seems to me, they are too clever.

German wall-mounted double-circuit gas boilers

In general, Wissmann has some simple knots, the most reliable. And Vaillant begins to fall into some kind of complex menu, the obligatory participation of a service specialist.

An ordinary user in Vaillante cannot figure it out. To change the simple settings of the boiler, you need to get into the instructions, or contact somewhere, etc. On the one hand, this has a plus, in the sense that it is protection against fools so that the user does not interfere in the operation of the boiler. On the other hand, it makes life difficult for installers.

If we consider more budget options, this is Buderus. I can't say anything bad about Buderus. In general, the boilers are reliable. Now a plant has opened in Russia, and boilers are now being produced here. Cheap parts, good build quality. According to my observations, the boilers are reliable.

Vailant, in my opinion, makes good boilers, but I don’t like their service policy, I don’t like the over-sophisticated boiler control logic. The boilers are economical, technologically advanced, but in our operation this may turn out to be a minus. They are picky about poor water quality, poor electricity quality. Those boilers that were installed 8-10 years ago (I have accumulated my own breakdown statistics) break down more often than Wiessmann. Although this is one class device. Vaillant has very expensive parts, and according to my statistics, it breaks down more often than Buderus.

I installed about the same number of boilers from Viessmann and Buderus, and Vaillant was much smaller, and 80% of Vaillant boilers had some kind of breakdown of varying degrees of complexity. But they were all noticeably expensive. Even replacing the make-up valve came out at 2-3 thousand rubles. In Buderus boilers, the make-up valve has never been changed.

So I try not to recommend Vaillant. In my opinion, the whole policy of Vailant is focused on service, and to become a service, you need to buy a set of spare parts. For Moscow or for the northwestern region, it is relevant. People there live richer, they think about the service and are ready to pay for it. Guarantee, service on this you can earn.

In the Krasnodar Territory and Adygea, this is a problem, there are few such people, the equipment itself is not very common. Load up with spare parts and try to make money on repairs by pushing additional customers. service is not our style.

Italian wall-mounted double-circuit gas boilers

The Italians are generally not bad in quality, but, in my opinion, worse than the Germans. In general, I liked Baksi, Baksi's approach, service policy. Spare parts are cheaper than those of the Germans, but also quite expensive. Boilers rarely break.

Ariston in general, good boilers, there are nodes that break down quite regularly. This is a three-way valve if there is a split heat exchanger in the boiler. If the water is hard, then the valve breaks once a year.

Fondital And Nova Florida good boilers, rather poorly distributed now. Used to be popular because of the low price. The cheapest boilers according to Italians. I haven't put them on for the last five years. Those boilers that I installed earlier work normally even under poor operating conditions.

Korean wall-mounted double-circuit gas boilers

Boilers Navien very common in our region. Very cheap segment, very well entered the market. The boilers are not bad, but there is a weak knot that spoils everything. This is the primary heat exchanger. He is weak to them. If something breaks in Navien, then 90% is the primary heat exchanger.

Now, when many years of experience in their operation have been accumulated, it is clear that customers do not like it. Negative rumors are spreading. I think that on this occasion, probably, sales of Navien also fell. And they could develop. The boiler has a different design logic, made in Korea, unpretentious, cheap spare parts, but the primary heat exchanger spoils everything.

If they got rid of the design flaw with the heat exchanger, I think they would have captured the market a lot. I would love to put them on myself. It makes no sense to buy a boiler that breaks down on hard water in a year or two. The heat exchanger for this boiler costs from 6 thousand rubles + work to replace it.

I installed few Naviens, but served a lot. I have not seen a boiler that has worked for more than three years without a heat exchanger failure. I came across old boilers with a copper heat exchanger that worked trouble-free for 6-8 years.

Kiturami. I can't say anything bad. They are not widely distributed in our country, inexpensive spare parts.

Deo not bad boilers, there was a period when these boilers often and vilely broke down, but then the design was finalized, and in general, those boilers that I encountered and installed myself showed themselves well. Good price, in conditions of poor operation, they showed themselves normally. Better than the Naviens. No worse than the Italians.

Chinese wall-mounted double-circuit gas boilers

Chinese gas boilers break down quite often. But Chinese boiler manufacturers are gradually taking over the market and constantly improving the quality. My prediction: within 5 years they will begin to actively invade the market, because they will improve the quality, the price is low + development has begun in automation, boiler control from the phone. Sensor technology, remote access, all this will be integrated into the boilers.

Now such electric kettles there is that, in terms of functionality, they remind me a little of a spaceship. Gas technology in this sense is a bit conservative. Of course, some models of gas boilers have access via the Internet, some settings can be made from a smartphone. But all this is not the same. I think that in the near future the Chinese will make a breakthrough in gas technology.

Poor operating conditions for gas boilers

Few people know, and even more so, turn their attention to the operating conditions of gas boilers.

Boilers break down quickly due to two reasons:

• Chemically and mechanically polluted water. Sand impurities, scale, a lot of iron, increased rigidity.
• No grounding, power surges.

Due to the quality of the water, heat exchangers and valves fail. Remember, I talked about Ariston and Navien?

The gas boiler needs to be serviced periodically.

Double-circuit gas boiler for heating a private house

Double-circuit boilers are good for small heating systems up to 100 square meters. With one bathroom and it is desirable that it is adjacent to the kitchen. And the boiler was nearby. For apartment heating, double-circuit boilers are an excellent solution.

If 4 or more people live in the house, two bathrooms, if there is a large distance between the boiler and consumers, then the double-circuit boiler starts to work at the limit of its capabilities, which leads to its breakdown.

I would not recommend installing double-circuit gas boilers with a power of less than 20 kW for a simple reason: such a boiler capacity for heating is excessive, and for hot water supply it will not be enough.

In order to heat the water in the duct, you need to apply a lot of power. Many customers and installers do not understand this. Therefore, I would not recommend installing household rulers below 24 kW at all. With a power of 20 kW, such a boiler serves 1 hot water point.

Calculation of the power required for hot water preparation

The cold water entering the boiler has a temperature of 12°C.

The boiler heats water and the hot water temperature will be 50°C at the outlet of the boiler. I put the number 50 degrees, you can substitute your hot water temperature. In wall double-circuit boilers usually it is adjustable from 30 to 60 degrees.

The difference between the temperature of the water entering the boiler and leaving the boiler is called Delta. In my example 50-12=38 degrees.

I don’t want to explain to you for a long time about the heat capacity of water, to give formulas that no one will understand anyway. To simplify everything as much as possible, we can say:

Important!

When you turn on a hot water faucet, approximately 8 liters of water per minute flows out of it. Therefore, in one hour, 8l * 60min \u003d 480l / min will pour out of this tap.

In my example the Delta was 38°C. 38*480=18 240 W/h or 18.2 kW/h.

This is the power needed to heat water in the duct. That is why most manufacturers make wall-mounted double-circuit gas boilers with a power of 20 kW or more.

Attention!

Additional losses occur for heating pipes. Everything is cold in the morning, the man turned on the water until all the pipes warmed up. This needs power. To heat the boiler itself, power is needed.

Therefore, if you have 2 bathrooms, 4 people live, it is likely that hot water will include two or even three people at the same time. The boiler will not be able to heat the water. There will be a big delay in hot water.

A wall-mounted boiler with a power of 24 kW is 1-2 hot water draw-off points. It is very difficult to heat hot water in the duct. This is exactly what installers and customers do not know. What boiler power is needed for the preparation of domestic hot water and not for heating.

Very often I encounter situations: 4 people or more live in the house, there is a huge half-ton bath, two bathrooms, one of them on the 2nd floor. Installers installed a double-circuit gas boiler in the basement. The owner of the house complains that it takes a long time to get hot water, and the boiler often breaks down.

This is a matter of equipment selection and system design. This is very often mistaken.

I explain to people this way: if more than 4 people live in the house, the distance of consumers is more than 5-7 meters, bathrooms are on different floors, and you already have a double-circuit gas boiler installed, then you need to recirculate, install an indirect heating boiler.

Which gas boiler to choose for home heating

Now I advise the wall-mounted gas boiler Viessmann Vitopend.

There was a period when I put Wiessmann. He explained to people about quality and reliability. Then the price of Wiessmann rose, people were looking for cheaper options. At that time, I installed Baksi and Aristona and Fonditala boilers.

Then Fonditals rose in price, Wissmann fell in price. The Wissmanns went again. I usually dissuade people from Koreans, but if they insist, put a Korean, there is no money, I put it. And then I prefer to put Deo. They are better than Navien.

I put Aristons at one time, but there was a bad service policy. Perhaps she still has it. I can’t say that the Aristons are bad boilers, but the Equator customer-oriented service spoiled everything. For this reason, I stopped using Ariston.

Price is critical. The state of the market matters. People had more money, they put something more reliable, when there was less money, a crisis, people start saving hard on everything. Choose whichever is cheaper. This is the paradox of the market. A person builds a house for at least 20 years, but at the same time he does not think in terms of 20 years. The choice is based on price.

This is a choice not only of boilers, but also of radiators, pipelines, fittings. If there is a crisis, then they put frankly deshman garbage. Forgetting that the pipes in the walls will be very difficult and expensive to change. Even if the crisis is already over, and there is money.

Wall-mounted boiler - spare parts for gas boilers

What they do not pay attention to when choosing and buying a gas boiler is the cost and delivery time of spare parts.

You need to make heating at home. I don't know how you found people who will make your heating system. Maybe they were recommended to you by a relative, acquaintance or neighbor to whom they did something. Perhaps you do not know anything about them, and saw their ad in a newspaper or on the Internet. It doesn't matter.

You agreed with them that they will make the heating system for you, and most likely they will also purchase all the materials. It's no secret that many installers have discounts, and they earn a little on the supply of materials, and you save a little.

Now the most important thing: most likely, you will ask them the same questions that customers most often ask me:

• Can you tell me a good gas boiler for a private house?
• Which pipes are better and why?
• Can you recommend good radiators?
• How long will it take to deliver the product and install it?
• Why so long?
• What's so expensive?

What materials do you think installers recommend in 90% of cases?

Most installers advise those materials on which they get the most discount!

For example, some store gave an installer a 15% discount on Ferroli boilers. The heating installer will recommend this boiler to you, and possibly share a discount with you.

Italian boiler at a discount, such a joy 🙂 Winter will come, or maybe it will happen after 5 winters and the boiler will break. It's cold outside and the heating doesn't work. You call the installer or find a person who can repair your boiler urgently.

This person comes, opens the boiler and tells you: the heat exchanger is leaking, or the control board is burned out (or maybe 100500 more reasons), in short, you need to change this spare part.

He finds out, and it turns out that the heat exchanger for the Ferroli boiler will go for three weeks and it costs 29 thousand rubles. And the new Ferroli gas boiler costs 35,000 rubles.

This real situations from my practice. Imagine: it’s winter and frost outside (even cooler than the New Year holidays), the boiler is broken and now there is no money for a new boiler.

What to do in this situation? Change the boiler to a similar boiler? Or change the manufacturer of the gas boiler, but then you have to redo the project for gas. Wait for a spare part and heat the house with electricity, or what do you have there?

When I advise Viessmann, I know for sure that any spare part for this boiler can be obtained within 1-2 days. Or replace it with something, make the boiler work quickly.

Choose materials for construction wisely, learn materiel or hire responsible and competent contractors like us.