How to choose the right gas water heater, taking into account all the parameters. Geysers Column for heating water

If you are looking for high-quality geysers, the official Mosoblgaz website is ready to offer a large selection of water heaters according to affordable price. Our range of equipment can satisfy any cooking requirement hot water. We cooperate with leading manufacturers of home appliances, therefore we guarantee their quality and high efficiency in operation.

How to choose a geyser

The purchase of instantaneous water heaters is made taking into account the needs of the user - the volume of hot water consumed, the composition of the family, the number of water intake points. Right choice will provide comfort in using the equipment and significantly extend its service life. When studying our official website of geysers, we recommend paying attention to the following criteria:

• Performance - small-capacity models up to 13 l/min are suitable for installation in apartments; more productive options will be ideal for private homes or small commercial establishments (for example, a bar or cafe).
• Water intake points - if you plan to use hot water only for washing dishes in the kitchen, it is enough to choose a model designed for one water intake point. When using a shower or bath, it is better to give preference to multi-point heaters.
• Type of ignition - can be automatic, with water heating when the tap is opened, or on piezoelectric elements that require a preliminary press of a button.

In addition, geysers on our official website may have electronic or mechanical control, vary in size and availability additional functions. Taking these characteristics into account will help you choose the optimal solution specifically for your premises.

Assortment of geysers

As one of the leading suppliers gas equipment For the home, our company offers customers a wide range of speakers. Here you will find wall-mounted models in a stylish design, varying in power from 11 to 30 kW. Water heaters are equipped with a closed or open combustion chamber and can heat water up to a temperature of 65 °C.

We work only with trusted manufacturers who guarantee that their heaters comply with modern standards. The official website presents geysers from such famous brands as Electrolux, Navien, Bosch, BaltGaz, Baxi, Neva, Ariston. All equipment has certificates that confirm its complete safety in use. Water heaters are manufactured from reliable components using advanced technologies that ensure their adaptation to Russian operating conditions.

Sale of geysers on the official website of Mosoblgaz

The Mosoblgaz company has been selling and installing household gas equipment for several years. We understand the needs of our customers well and offer only relevant and in-demand products that will serve you well for many years. When purchasing geysers from the official website, you can count on their favorable price and many advantages:

• installation and maintenance services;
• assistance in choosing the appropriate option;
• professional consultations on issues of interest;
• fast delivery of the order in Moscow or throughout the Russian Federation;
• possibility of payment in the most convenient way.

To place an order, you can submit a request for the selected model online. If you have any questions about our products, please contact the company’s managers by phone.

Geyser - instantaneous water heater, running on natural gas. If you do not have hot water supply, but gas is supplied, this equipment will increase the comfort of your life. You simply open the tap, hot water flows out of it, and its temperature is regulated by you yourself. Even if you have a centralized supply in your house or apartment hot water, but you are not satisfied with the price you have to pay for heating, or perhaps you are not satisfied with the temperature, installing a geyser will also solve these problems. Heating water costs much less than it is provided centrally - this results in significant savings on utility bills. To understand which geyser is better, you will have to study the structure of the equipment and its types. Then the choice for you will be simple and conscious.

The structure of the geyser

• gas burner device and gas removal system;
• heat exchanger;
• ignition and control module.

All these units have several modifications and their arrangement gives different models with different characteristics. All this allows you to choose a unit to suit your own requirements, because you can only say which geyser is better by being tied to a specific situation.

Type of ignition

For the dispenser to start working, you need to light the gas. Older models were lit manually by holding a burning match to the igniter. Today such units are no longer on sale; they are a thing of the past. They have been replaced by others that operate in automatic or semi-automatic mode.

Piezo ignition

In geysers with a piezoelectric element, ignition occurs in a semi-automatic mode. There are two burners - main and pilot. The pilot burner is a small wick that burns continuously, whether there is hot water flow or not. The main burner turns on only when the tap opens. The rest of the time it is turned off.

The procedure for starting a gas water heater with piezo ignition is simple: press the button located on the front panel, a spark appears on the candles, which ignites the pilot burner. When the hot water tap opens, gas is supplied to the main burner and ignition occurs from the pilot burner. While water is being consumed, both burners are lit. The valve was closed, the gas supply to the main one stopped, only the pilot one was on again.

Piezo ignition device for geysers - a simple and inexpensive device

What are the advantages of geysers with piezoelectric elements? These are the cheapest models and usually have a mechanical control - a regulator that allows you to change the height of the flame, thereby regulating the temperature of the hot water. These models are non-volatile, which can be important for a summer residence.

There are more shortcomings and they are more serious. The wick burns (should burn) constantly while you are using the column, and this is gas consumption. Even if it is small, but constant, as a result, quite a decent amount accumulates in a month. So this is far from the most economical way to heat water. The second disadvantage is also associated with the burning of the wick. If it goes out, you will not be able to light the column. The wick goes out because it does not have enough oxygen to burn, or because backdraft periodically occurs in the chimney, which blows out the flame. Since there is a flame controller, this is not a big deal - the gas shuts off automatically, but having to re-light the pilot burner is unpleasant.

Electric ignition

Automatic geysers have electric ignition. This is an electric spark generator that is activated when the tap is opened. The rest of the time the gas is not lit, which significantly saves fuel. There is an electric ignition powered by batteries, and there is one from a 220 V network. Which gas water heater is better for this parameter must be chosen depending on the circumstances.

If your lights go out frequently, it makes sense to choose a battery-powered model. As you understand, in this case you have to make sure that they don’t “sit down.” If there are no problems with electricity or there is a backup power source, it is better to choose a gas water heater operating from a 220 V network. Plug the cord into the outlet once and forget about it. Electricity consumption is negligible, so they have almost no impact on bills.

Gas water heaters are electronically controlled. A board with a microprocessor is installed in the case; the desired temperature is set from a small control panel (push-button or touch). A small liquid crystal screen is often installed here, which displays the current state of the equipment, the temperature of the water, if it is being heated. This type of geyser is the best if you value ease of use.

Disadvantages - higher price and power requirements. Electronics need a stable voltage of 220 V with small deviations of the order of 2 * 3 V. We cannot maintain such parameters, so in order for an automatic gas water heater to work for a long time, a stabilizer is required, and it is better not a relay, but an electronic one. It not only stabilizes the voltage, but also evens out the shape of the pulses, which is also very important for imported water heaters.

Burner, combustion chamber, chimney

Heating of water in a gas water heater occurs due to the heat released during gas combustion. The combustion itself occurs in the burner, and it is “packed” into the combustion chamber. Unburnt gases that remain in the chamber are discharged through the chimney. Let's take a closer look at all these devices.

Burner - main unit

Burner

The heat source in the gas water heater is a gas burner. There are three types: single-stage, two-stage, modulated. The first two types are almost never seen lately - they do not allow maintaining a given temperature, so there is no point in considering them - all columns have a modulating burner.

Modulating burners can be controlled manually - with a special handle mounted on the body - or through a microprocessor that maintains a given water temperature. Burners are made mainly of galvanized steel, since this material is optimal for performing the assigned tasks. It is inexpensive, durable, has a high melting point, and can withstand frequent heating.

Types of combustion chamber and chimney

Combustion chambers in geysers are of two types - open and closed. Their name reflects the essence:

• closed (turbocharged, fan) is a metal box into which a burner is inserted with a socket at the top for installing a chimney;
• open (atmospheric) - this is actually the entire body of the column, since there is no isolated space, just a burner is installed in a certain place, on top there is a lid with a socket to which the chimney is connected.

TO different types combustion chambers require a different chimney. In an open chamber, air is taken from the room, therefore an effective ventilation system, normal air flow and an atmospheric chimney exiting into the ventilation duct are necessary. The closed chamber is equipped with a coaxial chimney (two pipes of different diameters inserted into one another), which is led through the wall to the street. In this case, combustion products are removed forcibly, using a fan, through the inner pipe, and oxygen flows directly to the burner through the outer pipe.

A gas water heater with a closed combustion chamber operates more stably under normal conditions, but it has disadvantages. In winter, the chimney can become overgrown with frost, causing the heater to go out (it is extinguished by an automatic system that controls the removal of combustion products). The second point is that with a strong side wind, the air flow can blow out the flame. The gas supply is turned off by the same automatic system, but the situation is unpleasant. The third circumstance is that not all city authorities allow holes in the walls of houses and the insertion of pipes.

So in this case, it is difficult to say exactly which geyser is better - it depends on many factors.

Heat exchanger

Water is heated while it flows through the heat exchanger. He is metal pipe installed above the burner. The shape of the heat exchanger in a gas water heater is special - a pipe with fins is laid in a snake at the bottom, then a sheet of metal is installed around it, on top of which the pipe is wound in a spiral. Water flowing through this long path is heated by the heated metal.

Heat exchangers are made from galvanized steel (the most budget option), stainless steel and copper. The best in terms of efficient heat transfer are copper. They are the most economical, but also expensive. The most durable ones are stainless steel, but they are much worse at heat transfer. Which gas water heater is better in this case is up to you to decide. Choose the quality that is more important to you.

If you decide to buy a gas water heater with a copper heat exchanger, do not try to find a cheap model. In order to reduce the price, manufacturers use low-quality copper, and the tubes are also made with thin walls. Such a heat exchanger will serve the warranty period, and then problems will begin - a leak will appear.

If you remove the casing, you will see fistulas in the tubes through which water drips. They are located mostly on the outside of the pipe, exactly in the place where condensation forms. If the pipe is of normal thickness, this is not a problem, but it quickly corrodes thin walls. Such a heat exchanger with a leak does not need to be replaced (it costs about 1/3 of the total price), it can be soldered. You will need refractory solder with a melting point of about 200°C, a powerful soldering iron and soldering flux. The technology of work is usual - clean the damaged area to bare metal, degrease, tin, and solder.

How to determine power

First of all, you need to decide on the power or performance of the gas water heater. These are two interrelated characteristics that simply reflect different characteristics of the unit. Performance is how many liters of water a column can heat per minute, and power is how much heat it can release. Some manufacturers indicate power, others indicate performance, so you need to understand exactly what you need.

Let's first figure out what kind of performance you need from your geyser. It depends on the number of consumers that need to be provided warm water. There are consumption standards for different types of equipment:

If you have a kitchen sink, shower and washbasin connected to hot water, so that all three points work simultaneously and the water temperature does not drop, you need a capacity of 4 + 4 + 10 = 18 l/min. This is a lot, the price tag will be substantial. If you think about it, you will realize that all three devices are almost never turned on at the same time. There are situations when the shower and one of the taps work together. To provide them with hot water, the capacity must be 14 l/min. This is a little more modest, but quite enough for a comfortable stay. Look for the found value in technical specifications, it should not be less.

Now let's look at power. Gas water heaters can allocate from 6 kW to 40 kW of heat for heating water. Here the division is:

• a gas water heater with a capacity of up to 19 kW is suitable for heating water for one water collection point;
• for two points the power should be from 20 kW to 28 kW;
• three require more than 29 kW.

Now, you can definitely say which geyser is better in terms of power in relation to your needs.

What else to look for when choosing

There are a few more lines in the technical characteristics of geysers that are worth paying attention to. First, look at the minimum water and gas pressure that this model can work with. Imported geysers European manufacturers in this regard, they are more capricious - they are designed for stable pressure and do not tolerate changes well. But under normal conditions they work stably and without breakdowns.

Some manufacturers, in order to adapt their equipment to our conditions, install gearboxes that compensate for surges. If the model you like does not have such a device, and your water and/or gas pressure fluctuates, you can install the reducer in front of the entrance to the dispenser. This device is simply placed into a pipe break; installation is standard. At the same time, your other consumers will be protected.

It is also useful to review the list of utility programs and protection levels. The safety and comfort of equipment operation depends on them. It is highly desirable to have the following functionality:

• Gas control. Monitors the presence of a flame on the burner; if it goes out, it shuts off the gas supply.
• Traction control. The presence of draft in the chimney is controlled. If combustion products are not removed, the gas supply is shut off.
• Flow control or hydraulic valve. Turns off the column if the water pressure is too weak or there is none at all.
• Overheat protection. The temperature sensor monitors the temperature of the water in the heat exchanger; when it approaches a critical point (boiling), it turns off the column. This extends the service life of the equipment (if it boils, the heat exchanger can rupture, as can the pipes).

These functions are necessary for the safe operation of the geyser. This is almost a standard set that is found in all good gas water heaters. All others are optional. They, as a rule, are no longer so critical (for example, the remote control).

Geyser sizes and prices

The overall dimensions of gas water heaters are small - they are comparable to a small wall kitchen cabinet. The average height is 550-650 mm, width 300-400 mm, depth 200-300 mm. But if you wish, you can find models that are wide and flat, or vice versa, narrow and deep. Which geyser is better based on this parameter can only be determined by reference to the installation site, so there is no definite answer here either.

Prices for geysers vary widely. Simple models with piezo ignition and galvanized burner cost from $110. Equipment with electric ignition and a bunch of service functions - up to $450. So there is somewhere to roam.

• We offer to buy Gas instantaneous water heaters (gas water heaters) with delivery in the Tavago online store.
• Price for Gas instantaneous water heaters (gas water heaters) from 4680 rubles.
• Read instructions and reviews about Gas instantaneous water heaters (gas water heaters).

A gas water heater is a device for heating running water using a burner in a built-in heat exchanger. There was a time when the popularity of instantaneous gas water heaters began to decline, and consumers became interested in buying electric water heaters. But inexorable time, the experience of many generations, economic factors and new technologies have put everything in its place. Nowadays, autonomous hot water supply using flow-through gas appliances is experiencing a renaissance. Modern gas-powered instantaneous water heating equipment is highly energy efficient and reliable. And models with a power of 10 kW and above are already able to provide hot water to several consumption points.

Buying a gas instantaneous water heater is not a problem these days. There are plenty of these devices on the heating market to suit every taste. But there are certain criteria that need to be taken into account for the correct selection of the model. They determine how rational your primary and operating costs will be, as well as the final degree of comfort of hot water use:

• gas pressure in the pipeline
• minimum water pressure supply to the gas water heater
• number of hot water consumption points
• hot water capacity in l/min
• geyser power in kW
• burner ignition method
• type gas burner
• type of combustion chamber affecting the connection to the chimney
• overall dimensions and installation conditions
• manufacturer's warranty
• Availability of warranty and post-warranty service

The pressure in the gas pipeline determines both the future heating performance and the possibility of using a particular model, specified in the passport data of the instantaneous gas water heater. No less important for the normal operation of the device is the lower limit of water pressure at the inlet to the gas water heater. Low pressure may cause problems with the operation of the water heater. It should be understood that as the number of floors increases, the water supply pressure decreases, which requires a competent choice of the power of the dispenser. A simple and logical relationship works here - the higher the floor, the lower the pressure in the water supply and less power is needed to heat the water passing through the heat exchanger. Excessive heating power in this case will simply be a waste of money and will not affect the performance of the device in any way.
According to the method of igniting the burner, geysers are manual, piezoelectric and electronic. It’s even somehow indecent to talk about manual ignition with matches in the 21st century. Piezo ignition is also done manually, albeit by pressing the ignition start button. Therefore, it is preferable to choose a device with automatic electronic ignition, which ignites the burner with a spark discharge. This method in the long term provides some savings in gas, which in other options is spent on burning the pilot burner, which burns constantly while the device is operating. The degree of consumer comfort is also influenced by the type of gas burner, the power of which can be changed in steps or with smooth modulation. Pay attention to the type of combustion chamber of the water heater, as this may affect additional costs when installing the device. Geysers with natural draft require a full chimney to remove residual combustion products. And water heating equipment with a closed combustion chamber makes do with the removal of gases to the outside through a thin coaxial pipe.

Branded cheap water heater has high performance, has stylish original case, is one of the necessary design elements of the interior of the room. In the ranking of water heating devices, they are extremely popular cheap instantaneous gas boilers world-famous brands: English Edisson, Italian Zanussi, Superlux, German Bosch, Vaillant, Roda, Russian Gazlux, Neva, Serbian Gorenje. A high-quality, inexpensive household gas appliance for heating instantaneous water is capable of providing the water point with hot water in unlimited quantities. Also, a high-performance modern gas boiler can be used as a powerful auxiliary heating device in an autonomous heating system. The original device for heating water of this type is provided with a multi-level system of safe operation over a long period and can operate in several modes.

We recommend purchasing a high-quality instantaneous water heater with a manufacturer’s warranty in specialty stores or dealerships!