Gas heating boilers are wall-mounted and reliable. Review and rating of double-circuit wall-mounted gas boilers. Let's look at the main advantages of Buderus Logano G334

The floor-standing boiler is designed to operate on natural or liquefied (retrofit) 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 cast iron heat exchanger in 5 sections will ensure reliability and increase service life (due to the fact that cast iron is 2 times less susceptible to corrosion than steel). For stable operation from the network, the installation of 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 natural removal of combustion products. A control system with a display makes it easier to set up and control the operation of the boiler.

Pros:

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

We will consider the most common models, based on the number of circuits in the units, as well as 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 first and foremost, 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, which is why 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 heating device has a power of 24 kW, the performance of the hot water supply 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 operating conditions.

Another outstanding model is Baxi Nuvola-3 Comfort 240 Fi. The device has high performance, efficiency reaches 90% and higher. 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. The design of the unit also includes a boiler.

Some experts express the opinion that in last years The quality of Baksi's products is let down. In addition, most heating units began to be produced in China, and this raises some concerns.

Protherm

Boiler Protherm Gepard 23 MOV

Heating appliances 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, but it will be quite enough for one water intake point. The boiler's performance is high, from 90%, and can function in conjunction with heated floors. The device comes with harness and numerous systems.

The Proterm Panther series of double-circuit gas boilers is distinguished by good quality and reliability. The line 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 types are produced. The productivity of hot water supply circuits reaches 14 l/min.

Vaillant

The units produced by this manufacturer have good technical and operational characteristics and their cost is quite reasonable. One of the most popular models that have become widespread is the 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

The wall-mounted double-circuit gas boiler also has high levels of strength and reliability. This device belongs to the group of condensing units. Thermal power is 20 kW, efficiency is more than 100%. According to the manufacturer that produces such equipment, devices in the process of supplying heat to rooms can save up to 10% of gas. The combustion chamber of such a device is closed, and the design includes a piping.

Double-circuit gas boilers from Vaillant are becoming increasingly popular every year, because... high quality, reliability and resistance to breakdowns make them attractive in the eyes of users.

Immergas

This brand is 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 indicators. The only drawback is related to the hot water supply circuit - maximum amount The amount of water it can pump is 11.1 l/min.

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

Gas boiler Immergas Eolo Star 24 3 E

Bosch

The Bosch company has become widely known throughout the world and has established itself as a company that produces high-quality and reliable equipment. Model Bosch Gaz 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;
• there are no difficulties in management.

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

Among 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 less power, equal to 18 kW.

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

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

Baxi Fourtech 1.24F

This model is widely popular, the combustion chamber of the device is closed, there is also a turbocharger and coercive system smoke removal.

Wall-mounted gas boiler Baxi Fourtech 24 F

Thanks to the flame modulation in the burner, it is possible to change the thermal power in the range from 9.3 to 24 kW. The maximum thermal load is 25.8 kW. The heat exchanger is made of copper, and the package also includes a water pump that provides forced circulation coolant in the system.

A 6-liter expansion tank makes it possible to compensate for the expansion of the coolant during its heating process.

To make the unit convenient to use, it is equipped with a mode indication, automatic ignition, and a built-in thermometer. Safety is achieved by protecting the heat exchanger from overheating, the blast valve, and 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 a disadvantage, we can note the fact that some models have shortcomings with gas valve.

Neva Lux 8618

This 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, the area of ​​which reaches 180 m².

Boiler NEVA LUX 8618

The device includes 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 is located. Thanks to the atmospheric burner, the boiler operates practically without making any sounds.

The heat exchanger is made of copper, which ensures high performance of the device, efficiency reaches up to 90%. The amount of gas consumed is 2.13 m³/hour. When the equipment is switched to operate on liquefied gas, the consumption is 1.59 kg/hour.

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

Key characteristic feature the described model is considered to have low fuel consumption and ergonomic design. You can connect a heated floor system, air turbines, or an external thermostat. The cost of the device is 20,000 rubles. The downside is 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, productivity 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 of 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 convert a gas boiler to operate 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 coolant based on propylene glycol can be used.

Which gas boiler is better? I answer from my point of view. My team has been installing heating systems for 10 years. 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 service 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. You won’t find boilers more expensive than 50,000 rubles here.

Double-circuit wall-mounted gas boiler - which one is best for heating a private home?

How to make heating in a private house

Any story begins with the fact that a person has a house and needs to somehow heat it. If there is network gas nearby, then everything is fine. All that remains is to build 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

I’ll tell you how to make a heating system with your own hands another time. Let's assume that the customer took the second path and agreed with us about the installation of heating. I meet educated customers, they already know where the radiators will be installed and where the heated floor will be.

They usually ask me questions like:

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

In this article I will tell you how to choose a gas boiler for a private home. What is the most reliable gas boiler and why 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; in my opinion, they have a very small market share. I see them extremely rarely, so I can’t draw any conclusions.

Gas boilers best manufacturers

European manufacturers: VIESSMANN (Vissmann), VAILLANT (Vailant), BUDERUS (Buderus). German organizations that, taking into account globalization, have production in Turkey, Russia, and China. This trio specializes in thermal equipment. They fill the niche of thermal energy sources. From gas wall-mounted and floor-standing 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 as car manufacturers have a small car, a middle class and a business class, boiler manufacturers segment their boilers to maximize market share, and Viessmann has cheap and expensive boiler models.

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

Rating of gas boilers for reliability and quality 2017

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

The best double-circuit gas boiler - review from an installer

In my opinion, VIESSMANN has a balanced balance of simplicity and at the same time reliability and quality. In complex equipment, maintaining this balance is incredibly difficult. Vaillant, in my understanding, is trying to be as technologically advanced as possible. Although with Wissmann this also sometimes slips through. It seems to me that they have overdone the latest Vitopend line.

German wall-mounted double-circuit gas boilers

In general, Wissmann has some simple units that are as reliable as possible. And Vaillant begins to fall into some kind of complex menu, the mandatory participation of a service specialist.

The average user in Vaillant cannot figure it out. To change simple boiler settings, you need to consult the instructions, or go somewhere, etc. On the one hand, this is a plus, in the sense that it is foolproof, so that the user does not interfere with the operation of the boiler. On the other hand, this 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 produced here. Cheap parts, good build quality. According to my observations, the boilers are reliable.

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

I installed approximately the same number of boilers from Wissmann and Buderus, but Vailant had much fewer, and 80% of Vailant boilers had some kind of breakdown of varying degrees of complexity. But they were all noticeably expensive. Even replacing the make-up valve cost 2-3 thousand rubles. Buderus never changed the feed valve in the boilers.

So I try not to recommend Vaillant. In my opinion, Vailant’s entire policy is geared towards service, and to become a service you need to buy a set of spare parts. Relevant for Moscow or the northwestern region. People live richer there, they think about service and are willing to pay for it. Guarantee, service can make money from this.

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

Italian wall-mounted double-circuit gas boilers

Italians in general are not bad in quality, but, in my opinion, worse than the Germans. In general, I liked Baxi, Baxi’s approach, and service policy. Spare parts are cheaper than the Germans, but also quite expensive. Boilers rarely break down.

Ariston In general, these are good boilers, but there are parts that break quite regularly. This is a three-way valve if the heat exchanger is divided in the boiler. If the water is hard, the valve breaks once a year.

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

Korean wall-mounted double-circuit gas boilers

Boilers Navien very common in our region. A very cheap segment, they entered the market very well. The boilers are not bad, but there is a weak component that ruins everything. This is the primary heat exchanger. They are weak. If something breaks in Navien, then 90% is the primary heat exchanger.

Now that we have accumulated many years of experience in their operation, it is clear that customers do not like it. Negative word of mouth spreads. I think that because of this, Navien’s sales probably fell. And they could develop. The boiler has a different design logic, made in Korea, unassuming, cheap spare parts, but the primary heat exchanger ruins everything.

If they got rid of the design flaw with the heat exchanger, I think they would greatly capture the market. I myself would put them on with great pleasure. There is no point in buying a boiler that will break down in a year or two on hard water. The heat exchanger for this boiler costs from 6 thousand rubles + work to replace it.

I installed few Naviens, but maintained a lot. I have not seen a boiler that worked for more than three years without breaking the heat exchanger. 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 widespread in our country, inexpensive spare parts.

Deo good boilers, there was a period when these boilers often broke down, but then the design was improved, and in general, the boilers that I came across and installed myself performed well. Good price, under conditions of poor operation they performed normally. Better than Navien. 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 are constantly improving quality. My prediction: within 5 years they will begin to actively invade the market, because the quality will improve, the price is low + development has begun in automation, controlling the boiler from the phone. Sensor technology, remote access, all this will be integrated into boilers.

Now they are like this electric kettles there is little functionality spaceship they remind me. Gas technology in this sense, a little 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 of gas boilers

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

Boilers break down quickly due to two reasons:

• Chemically and mechanically contaminated water. Impurities of sand, scale, a lot of iron, increased hardness.
• Lack of grounding, voltage surges.

Due to water quality, heat exchangers and valves fail. Remember when I told you about Ariston and Navien?

The gas boiler must be serviced periodically.

Double-circuit gas boiler for heating a private house

Double-circuit boilers are good for small heating systems with an area of ​​up to 100 square meters. With one bathroom and preferably adjacent to the kitchen. And the boiler was nearby. For residential heating, double-circuit boilers are an excellent solution.

If there are 4 or more people living in a house, there are two bathrooms, if there is a large distance between the boiler and consumers, then the double-circuit boiler begins 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: this boiler power is excessive for heating, and for hot water supply it will not be enough.

In order to heat the water in the flow, you need to apply more power. This is not clear to many customers and installers. Therefore, I would not recommend installing household lines below 24 kW at all. With a power of 20 kW, such a boiler serves 1 hot water point.

Calculation of the power required to prepare hot water

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

The boiler heats the water, and at the boiler outlet the hot water temperature will be 50°C. I set the number to 50 degrees, you can set your hot water temperature. In wall double-circuit boilers it is usually 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, or give formulas that no one will understand anyway. To simplify everything as much as possible, we can say:

Important!

When you open a hot water tap, approximately 8 liters of water flow out per minute. Therefore, in one hour, 8 l * 60 min = 480 l / min will flow out of this tap.

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

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

Attention!

Additional losses arise for heating the pipes. In the morning everything is cold, the man turned on the water until all the pipes warmed up. This requires power. Heating the boiler itself requires power.

Therefore, if you have 2 bathrooms and 4 people live, there is a high probability that hot water will include two or even three people at the same time. The boiler will not have time to heat the water. There will be a long delay in hot water.

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

Very often I come across situations: 4 or more people live in a house, there is a huge half-ton bathtub, two bathrooms, one of them on the 2nd floor. In the basement, installers installed a double-circuit gas boiler. The owner of the house complains that he has to wait a long time for hot water, and the boiler often breaks down.

This is a matter of equipment selection and system design. This is where mistakes are made very often.

I explain to people this way: if more than 4 people live in a house, the distance between 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 heating your home

Now I recommend the Wissmann Vitopend wall-mounted gas boiler.

There was a period when I staged Wissmann. I explained to people about quality and reliability. Then the price of Wissmann rose, people were looking for cheaper options. At that time, I installed Baxi and Ariston boilers, Fonditals.

Then Fonditals went up in price, Wissmann fell in price. The Wissmanns have gone again. I usually dissuade people from Koreans, but if they insist, put in a Korean, there’s no money - I’ll put in. And then I prefer to put Deo. They are better than Navien.

I installed Aristons at one time, but they had a bad service policy. Perhaps it is still preserved. I can’t say that the Aristons are bad boilers, but the Equator’s non-customer-oriented service spoiled everything. For this reason I stopped using Ariston.

Price is critical. Market conditions matter. People had more money, they put something more reliable, when there was less money, there was a crisis, people began to strictly save on everything. They choose what is cheaper. This is the paradox of the market. A person builds a house for at least 20 years, but at the same time does not think in terms of 20 years. The choice is made 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 on frankly cheap bullshit. Forgetting that replacing pipes in the walls will be very difficult and expensive. Even if the crisis is already over and there is money.

Wall-mounted boiler - spare parts for gas boilers

What people don’t pay attention to when choosing and purchasing a gas boiler is the cost and delivery time of spare parts.

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

You agreed with them that they will build your heating system, and most likely they will also purchase all the materials. It's no secret that many installers have discounts, and they earn a little money by supplying 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 home?
• Which pipes are better and why?
• Tell me good radiators heating?
• How long will delivery and installation take?
• Why so long?
• Why so expensive?

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

Most installers recommend those materials which they give the most discount on!

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

An 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 freezing outside and the heating isn't working. You call an installer or find someone who can repair your boiler urgently.

This person comes, opens the boiler and tells you: the heat exchanger has leaked, or the control board has burned out (or there may be 100,500 other reasons), in short, this spare part needs to be changed.

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

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

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

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

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