What power do you need a stabilizer for a gas boiler. Which voltage stabilizer to choose for a gas boiler? What to look for when choosing

Modern boilers are high-tech equipment, the operation of which is controlled by electronics. She, in turn, is very demanding on power supply. It is also demanding on the magnitude of the voltage, its shape: there must be a sinusoid and 220 V with a certain error of 5%.

The need for a stabilizer

As practice shows, a huge part of the breakdowns of gas boilers is associated precisely with drops in the network. For this reason, experts recommend additionally installing a stabilizer or the peak of breakdowns occurs in summer or late spring. There are two reasons for this, one of them is expressed in the neighbors who started repairs or construction, the other - in summer thunderstorms. If you can somehow predict the approach of a thunderstorm, then it is simply impossible to know when someone will use a grinder, welding machine or sawmill. Therefore, it is recommended to protect expensive equipment in advance.

For reference

Heating, the price of which will be mentioned below, can only be used to protect equipment, in which case the device must be connected to the network, and the voltage must be applied to the boiler. If the stabilizer is installed on a house or apartment, then for boiler equipment these devices will be needed only if the unit with an electric motor is also powered from the outlet. This should include a washing machine or refrigerator. Jumps during turning off and on of such devices will adversely affect the automation of the equipment.

Description of different types of stabilizers and features of choice

If you want to choose a stabilizer for a heating boiler, you should get acquainted with the main varieties of such devices. They can be electromechanical, relay or electronic. The second variety is also called digital, but electronic ones are known as thyristor ones. The basis of such devices is an autotransformer. In electronic and relay, it has windings ranging from 4 to 20. By disconnecting and connecting them, you can equalize the input voltage.

The stabilization accuracy will depend on the number of windings. Thus, the more of them, the smaller the adjustment step will be. This indicates that the voltage will be maintained with minimal variation. The difference between electronic and relay models is the switches used. As you can understand from the name, and relay. The construction scheme is similar, but the response time of the elements is different. Thyristors are faster, this indicates that electronic models have better performance.

With the help of relay stabilizers, it is possible to ensure accuracy in the range from 5 to 8%. As for electronic ones, the accuracy in this case can vary from 2 to 3%. When choosing a stabilizer for a heating boiler that runs on gas, you should prefer the electronic variety. A positive feature is the low noise level during operation, but the disadvantage is the high cost.

Characteristics of electromechanical and relay stabilizers

When choosing a stabilizer for a heating boiler, you should get acquainted with the main characteristics of the models. For example, electromechanical ones are ready to last from 1 to 5 years, the manufacturer usually gives a guarantee for one year. The voltage range can vary from 150 to 250. Such stabilizers will have to be serviced once a year, and the response time is 10 V per second. When choosing a heating boiler, you should consider that it provides twenty percent protection against surges, and the stabilization accuracy varies from 2 to 3%. The cost of 1 kW as a result can vary from 900 to 1600 rubles.

If we compare with relay stabilizers, then it can be noted that they will last longer. The minimum service life is 3 years, but the manufacturer's warranty remains the same. Such voltage stabilizers for heating boilers have a voltage range ranging from 120 to 260, the device does not require maintenance, and the response time is 50 V per second. By purchasing such a unit, you can count on fifty percent protection, but the stabilization accuracy can vary from 5 to 8%. As a result, the cost of 1 kW will be somewhat less compared to electromechanical devices, this range varies from 700 to 1500 rubles.

From the foregoing, we can conclude that voltages for heating boilers are preferable for gas equipment. Such devices are more expensive, but the price pays off. And if you already have a relay stabilizer, then it must be installed on another unit or supplemented with an uninterruptible power supply.

We have already figured out the type of stabilizer, now we need to decide on the power. The power of boiler equipment can be found in the passport, usually it varies from 100 to 200 W, but this value is average. In those moments when the device is turned on or off, this parameter can exceed the original 5 times. Therefore, the figure that you could find in the passport must be multiplied by 5, adding a margin of 10%. This will determine the required power.

Now you can choose a brand, you should pay attention to the country of origin. For example, in China they produce good products. It is also important to consider the power range. If it is wide enough, then this sign can be called good, because the technology has been worked out. You should not buy new items, since it takes years to work out a normal model.

Cost of stabilizers

If you want to purchase a stabilizer for a heating boiler, Teplocom can be an excellent solution. Model ST-555 can be purchased for 3500 rubles. The power is 555 VA. This stabilizer, according to the manufacturer, is quite reliable and simple. It is designed for and heating systems. With it, you can get an equalized output voltage at values ​​​​in the range from 200 to 240 V.

As another model, you can consider a stabilizer for the Hunter 440 heating boiler. It can be purchased for 5500 rubles. The equipment is a single-phase device, the rated power of which is 0.350 kW. The input voltage range varies from 120 to 260 V. The operating frequency is 50 Hz, the efficiency reaches 97%. The error can be 8%. Operation is possible at a relative humidity of not more than 80%. This stabilizer for a gas heating boiler can be operated at temperatures from +5 to +40 ° C.

In recent years, wall-mounted gas heating boilers have become increasingly common. They replace outdated domestic floor models, due to their ease of use, additional equipment built into them, technical characteristics, good hot water performance, appearance and other indicators.

But, like any technically complex equipment, they have their advantages and disadvantages. All heating volatile. The circulation pump, the electronic board of the boiler, and the turbine are powered by electricity.

In our country, especially in the private sector, there are quite often power outages, power surges, low voltage, etc. This has a very bad effect on the operation of imported gas volatile equipment, in our case, wall-mounted gas boilers.

To protect the boiler from these problems, you must definitely buy voltage stabilizer 220V for gas boilers for home heating. In this article, we will consider and compare the main types and models of voltage stabilizers that are most often found on the Russian market.

How to choose a reliable voltage stabilizer for a gas boiler

Voltage stabilizers for heating boilers

Voltage stabilizers differ in the nominal value of the input voltage:

— single-phase 220 V;

- three-phase 380 V.

Unlike, all wall-mounted gas boilers have a single-phase 220 V connection, so you need to choose a stabilizer from this category.

Power consumption of the stabilizer from the network

A typical standard 24 kW wall mounted gas boiler consumes 200-300 watts. This is a circulation pump, an electrical board and ignition, a turbine (if the boiler is with forced draft).

Based on this, we conclude that for a gas boiler we need a voltage stabilizer with a power consumption range of 400 watts. Some play it safe and buy more powerful models, which is allowed.

Voltage stabilizers differ in type:

— electromechanical;

— thyristor;

— relay.

Electromechanical are used for refrigerators or TV. They have a high error rate of 2-3%. However, they are not allowed to be connected for gas boilers. When closed, they can cause a spark, and in conjunction with gas equipment, this is very dangerous. In our case, we will consider only relay and thyristor stabilizers.

A thyristor voltage stabilizer for a heating boiler of the type has a high response rate during power surges, an error or accuracy rate of not more than 5%, in contrast to relay ones, where this parameter is 8%.

In general, this indicator is a very important technical characteristic of the stabilizer, it allows you to keep the voltage at the level we need.

The smaller the error, the better for a gas boiler. What does it mean?

Let's take for example a typical relay voltage regulator 220V model ASN-500/1-Ts. Let's say that a power surge of up to 240 V occurs in the electrical network of your private house. This output stabilizer will pass voltage to the boiler in the range from 202 to 238 V.

In this case, there is a possibility that, for example, the electronic board of your gas boiler will fail. Approximate indicators will also have a voltage stabilizer for a gas boiler brand Bastion "Teplocom": ST-555, ST-800, ST-888.

Let's consider another example.

The thyristor voltage stabilizer Calm "R-400 ST" with an alignment accuracy of about 5% will show 210-231 V at the output, this error is considered the norm and is recommended for imported heating, which is also indicated in their operating instructions.

The only drawback of thyristor stabilizers is its price. The same Calm R-400ST will cost you from 5500 rubles.

Voltage stabilizers brand Resanta - specifications

Resant voltage stabilizer: specifications

Voltage stabilizer Teplokom ST-800: specifications

Voltage stabilizer Teplokom: specifications

Stihl R600-ST voltage stabilizer: specifications

Stihl voltage stabilizer: specifications

Before starting a gas boiler, be sure to first buy a voltage stabilizer for it.
All manufacturers of wall-mounted gas boilers strongly recommend connecting the boiler through a voltage stabilizer. Of course, it is unlikely to help with a thunderstorm or lightning, but it will save your boiler from power surges and help it last for many years. Watch a video review of stabilizers.

Which voltage stabilizer to choose for a gas boiler?

Theoretically, for a heating boiler, you can use any of the household voltage stabilizers of suitable power. About 2-3 years ago, most often I had to do this. Electromechanical stabilizers were installed, which were supposed to ensure the safety of the boilers.

Advantages:

• smooth adjustment by means of a servo drive;
• more accurate, at that time, the output voltage.

But they had a big disadvantage:

• slow voltage equalization rate.

Because of this, the electronics of newer gas boilers, which are very sensitive to voltage changes and impulse noise, suffered greatly.

Another option was to put faster relay stabilizers instead of electromechanics. Advantages:

• high response speed to voltage changes - less than 10 ms (milliseconds);
• wider input voltage range (105...265V);
• wall-mounted, which is much more convenient.

For comparison, let's take the electromechanical and relay stabilizer of the most popular power, for 1000 VA (volt-ampere):

magazin energy en

The difference in response speed is colossal, but ordinary household relays were not developed for operation with gas boilers, and therefore have a significant minus:

• low output voltage accuracy (220 ± 10%).

As a result, we got a situation where ordinary household relays simply did not react to fluctuations in the mains in the range from 198 ... 242V.

If for old boilers this was not so critical, then for modern models of popular manufacturers (Vaillant, Baxi, Viessmann, Protherm, Ariston, Buderus, Beretta, Ferroli) such inaction led to the replacement of the board.

It became clear that household stabilizers are not suitable for operation with modern gas boilers. We need an apparatus that would be devoid of the shortcomings of the two previous options and should:

• respond quickly to changes in the power grid;
• have a small error in the output voltage.

Additional requirements include:

• pleasant appearance (the device will be placed near the boiler and a nondescript rough box would greatly spoil the interior);
• wall-mounted (mounting on the wall is more convenient and saves space).

So, a specialized line of voltage stabilizers "Energy ARS" was released on the Russian market, during the development of which they were guided by these requirements.

Energy ARS-1000 (1 kVA (0.7..1 kW))

After improvements and the first year of production, today we have the following final characteristics of the devices of this series:

• response speed - 10 ms (milliseconds);
• adjustment accuracy - 220 ± 4%;
• universal mount - you can either hang it on the wall or put it on small legs;
• input voltage range - 120...276V;
• small size (height: 35.5 cm, width: 20.5 cm, depth: 10 cm) and weight 3 - 5 kg;
• protection of the boiler against impulse noise;
• full metal body - increased safety;
• protection against incorrect connection (required for phase-dependent boilers);
• has a nice white body color;
• simple connection of the boiler through a plug and socket.

Comparing with household stabilizers, we get the following figures:

As you can see, Energia ARS output voltage is fixed at the level of the most accurate stabilizers on the market - electromechanical. The speed of operation is incomparably higher.

The only thing is that the input voltage range at the bottom is not as wide as that of the Voltron PCN:

	Voltron RCH-1000	Energy ARS-1000
Power:	1 kVA (0.7...1 kW)	1 kVA (0.7...1 kW)
Input voltage:	105...265 V	120...276 V

In general, the series turned out to be quite decent, at least the boilers received modern electronics protection from power surges and impulse noise. And the output error is minimal, at the level of the most accurate devices to date. This means that you will not have to change burned-out boards in boilers every six months, as is the case with general-purpose stabilizers.

First rule:

For modern gas boilers, it is better to connect specialized voltage stabilizers. For older models, a regular household stabilizer is also suitable.

What power do you need a stabilizer

First you need to indicate that the power of a gas boiler, for example, 24 kW does not mean that you need to look for a 24 kilowatt voltage stabilizer for it. 24 kW is the maximum useful heat output that the boiler is capable of delivering, and when choosing a stabilizer, you should focus on the power consumption, which is stated in "W" (watts) and is often 150 watts.

In all documents for gas equipment, only its operating current is indicated, but at the time of launch it exceeds the rated current by 3-5 times. Therefore, if a device was selected for the boiler based on its rated power, then at the moments when the gas equipment is turned on, the stabilizer will experience strong overloads, which will lead to a strong reduction in its service life.

So that the boiler is protected and the stabilizer does not have to be changed often, it is necessary to take the device with a power reserve.

Another point to be understood is that the power of the stabilizers is indicated in "VA" (volt-amperes), and the power of the boilers in "W" (watts). Most of our compatriots mistakenly consider these two parameters to be the same. In fact, volt-amperes is full power, and watts is only a part of it and is called "useful power". Therefore, when a voltage stabilizer is declared to have a power of 500 VA (volt-amperes), then it will have only 350 watts of useful power (watts).

Here is a table of the most popular power stabilizers for boilers in volt-amperes and their real power in watts:

Power, 500 VA	Power, 1000 VA	Power, 1500 VA
350 W	700 W	1050 W

Now the numbers are more real and the question "Why does my 150W boiler need a 500W boiler?" does not arise. Now it is clear that there are only 350 watts in it.

Second rule:

We understand that the power value of 500 VA of the stabilizer and 500 W of the boiler is not the same. We focus on real numbers.

How much does the voltage drop?

Now consider the last pitfall when choosing a voltage stabilizer for a heating boiler.

A person without special technical education is unlikely to know that when the voltage drops in the mains, the power output by the stabilizer also drops. And if the manufacturer claims 350 W, then already at 198V the power of the stabilizer will begin to decrease, at 170V it will be 80%:

350 * 80 / 100 = 280W

and at 130V only 50% of the nominal value:

350 * 50 / 100 = 175 watts.

Now there are no questions about the high power of the stabilizer for my boiler. It became clear that even with an abnormal voltage drop, a 150W boiler would not turn off due to overload.

As you can see, you need to know how much the voltage drops, and if there is no way to measure drawdowns, then choose a stabilizer with a power margin of 30%.

Third rule:

When the voltage drops, the power of the stabilizer also drops, so you should always take a device with more power than required.

conclusions

So, today we found out for ourselves:

• type of stabilizer required;
• determined the power of the apparatus;
• found out that a power reserve is needed for strong fluctuations in the network.

By following only these three simple rules, you can choose the right device in the right way or help a friend in this matter by giving a link to this article.

I hope I was able to help as much as possible with the selection of a stabilizer. If you have learned something new for yourself and find this information useful, click on the social network buttons below and save this article for yourself so as not to lose it.

Gas boilers are often used as a source of heat supply in low-rise construction. It is convenient, quite economical and safe. A double-circuit gas boiler, in addition to heating functions, provides hot water to those living in the house.

Some gas heating systems require connection to the electrical network, which is necessary for the operation of the control unit, control and automation of the boiler. In addition, most models of gas boilers are equipped with a circulation pump with an electric motor. There is a large selection of expensive gas boilers on sale, mostly foreign-made, which are very critical to the quality of the supply voltage, so a voltage regulator for a gas boiler is an essential part of heating equipment.

The need for a stabilizer

The heating gas boiler is a high-tech and complex device. The electronic systems of this unit are very sensitive to voltage drops. Statistics show that about a third of all faults are related to voltage surges in the power supply network. Moreover, to power control and automation systems, an alternating voltage of a sinusoidal shape is required, which differs from 220V by no more than 5-6%.

Only a high-quality and reliable stabilizer can provide such parameters. Moreover, if a large-capacity boiler is used in the heating system and there are one or two circulation pumps, then it is desirable to install separate stabilizers to power them.

Types of Voltage Stabilizers

Stabilization or regulation of mains voltage to power various radio and electrical devices has been used for a long time. The simplest device of this type is an autotransformer with step or continuously adjustable output voltage.

Currently, the following automatic voltage stabilization systems are used:

• Relay stabilizer;
• Servo stabilizer;
• Thyristor stabilizer;
• Inverter.

There are modern ones that use the principle of pulse-width modulation, but they are rarely used in gas heat supply systems.

Relay stabilizers

The principle of operation of a relay device is similar to that of an autotransformer. The voltage boost coil connected to the network is divided into sections, from which you can remove high or low voltage. The control module constantly scans the mains voltage and, in case of a change in the input voltage, turns on the corresponding relay.

With its contacts, the relay connects any of the sections to the output of the device. Since it works in discrete mode, the output voltage may differ from 220V up or down by 5-8%.

The device is reliable in operation, does not require maintenance, and has the following options:

• Voltage regulation - step;
• Installation accuracy - 5-8%;
• Rated input voltage - from 190 to 250 V.

Servo Stabilizers

The servo stabilizer is an electromechanical device. The voltage regulating element is a metal or graphite contact moving along the transformer winding. The contact is fixed on the axis of the servomotor.

The control board monitors the input voltage and, if it changes, sends a signal to the electric motor. The motor rotor rotates at a certain angle, thereby changing the voltage at the output of the device.

Thyristor

The thyristor stabilizer is a fully electronic device. The principle of its operation is similar to a relay device, only the transformer winding sections are switched not by relay contacts, but by semiconductor switches.

Switches made on thyristors or triacs provide a reserve of up to a billion switching, which makes this stabilizer extremely reliable. The device provides voltage regulation in a discrete mode, but has a high response speed.

Inverter type stabilizer

The most progressive stabilizer is an inverter-type device or a double conversion stabilizer. It lacks such a bulky element as an autotransformer. The alternating voltage, having passed through the filter, is rectified, while a certain energy is stored in the capacitor. Then the direct current is converted back to alternating current.

Each type of stabilizer has its own advantages and disadvantages:

• The relay device is characterized by low cost and good reliability, but due to step switching, the accuracy of setting the output voltage is low;

• The servo stabilizer gives a very accurate voltage value, but has a low response speed and requires constant maintenance due to the rapid wear of the elements, it is not recommended for use with gas equipment, because the contacts may spark when worn;

• The thyristor regulator has an instantaneous response speed, but costs much more than a relay stabilizer;

Criteria for choosing a stabilizing device for a heating boiler

To choose the best stabilizer for a gas boiler, you need to know its main characteristics. All devices designed to stabilize the mains voltage, have the following main parameters:

1. Power;
2. Response speed;
3. Output voltage accuracy;
4. Input voltage range.

In addition to these parameters, the cost of the device, its reliability and additional factors, such as noise and heat, may matter to a potential user.

• All stabilizers have built-in protection against overload, short circuit and disconnect the load when the input voltage is significantly exceeded. The power of the stabilizer is determined by the power of the gas boiler, and if the heating system is equipped with a circulation pump, then the power of the pump;

• The response speed determines how quickly the regulator will respond to a change in input voltage. In this sense, the slowest is the device with a servomotor, then comes the relay stabilizer. Electronic devices carry out almost instantaneous voltage switching so that the risk of failure of gas equipment in this case is minimal;

• Gas boilers of foreign production, as a rule, are designed for small fluctuations in the supply network. This value is indicated in the passport for the device and may be decisive when choosing a voltage stabilizer;

• The highest accuracy is provided by inverter and servo stabilizers. In relay and thyristor devices, the output voltage levels are switched in steps at certain intervals, which ensures a setting accuracy of about 5-6%. In most cases, such accuracy is sufficient for the normal operation of the gas boiler control and automation system;

• An important parameter of any stabilizer is the allowable input voltage range. Depending on the design, stabilizing devices can maintain a constant output voltage only within certain limits of the input voltage;

• Typically, stabilizers work successfully with an input voltage of 140-150 to 240-260 volts. This parameter is indicated in the product data sheet and may differ slightly. If the mains voltage deviates significantly from the permissible value, the electronic fuse will disconnect the consumer (load) from the electrical circuit. After normalizing the input voltage, the load is automatically connected to the stabilizer;

• In terms of cost, stabilizers of various designs can differ significantly. Powerful thyristor ones or cost several times more than relay ones, but this pays off with their high reliability and complete absence of noise during operation;

• For the convenience of users, most models of stabilizers are equipped with LED indicators of operating modes and a display where some digital parameters are displayed.

Power calculation

Choosing a voltage stabilizer for a gas boiler in terms of power is not as simple a task as it might seem. The electric power of the boiler is determined by the power of the control and automation unit and the power of the smoke exhaust fan, if installed. Some models of gas boilers may be equipped with electric valves.

On average, the electrical power of a domestic gas boiler does not exceed 200W, so a 300-500W stabilizer is suitable for powering the electrical circuits of such a device. This takes into account the required power reserve (20%).

A completely different situation arises when one or more circulation pumps are used in the heat carrier control system. Each pump is equipped with an electric motor, the starting current of which is many times greater than the working one.

To correctly select the power of the stabilizer, you should use a simple formula:

(boiler power + pump power×3) × 1.3

• The number "3" suggests the inrush current of the electric motor;
• "1.3" is a correction factor.

For example, the power consumed by the control circuit of a gas boiler is 45 W, the power of the circulation pump is 80 W, then the required power of the stabilizer will be - (45 + 80 × 3) × 1.3 = 488 W (500 W).

Which stabilizer is suitable for a gas boiler?

To understand which voltage regulator is best for a gas boiler, you can familiarize yourself with the basic requirements for the device.

A good stabilizer should have:

• 20% power reserve;
• Protection against overvoltage, short circuit and overload;
• The shape of the output voltage is close to sinusoidal;
• Automatic restart function;
• Indication of parameters and modes of operation.

Experts advise not to use devices with a servo drive to stabilize the voltage in gas equipment due to possible sparking between the brush and the winding. The most preferred models will be relay, thyristor and inverter stabilizers. Despite the high cost, they provide the best output voltage parameters and are distinguished by a long trouble-free service life.

The most reliable 2 Large margin of safety 3 Best price category

Modern gas boilers are high-end equipment with a processor system for monitoring and adjusting operating parameters. Of course, the electronics are sensitive to voltage drops and any slight surge in the network can disable the control unit, the cost of which in the price of the boiler is 30-50%. This will lead to a shutdown of the heating system (which is highly undesirable during the winter months) and unplanned expenses, and not small ones. To prevent such consequences, network stabilizers are used that equalize the drops, and in critical cases simply turn off the equipment.

In our review, we will consider these devices of various types (most widely used on the market), which are best suited for protecting heating boilers. The rating was formed on the basis of the characteristics declared by the manufacturer and the experience of the owners of this equipment.

The best relay-type stabilizers for gas boilers

The most popular devices in Russia for the stable operation of gas boilers are relay-type models. They belong to the class of automatic transformer devices with mechanical adjustment of stabilization. The most important positive characteristic of relay-type products is considered to be a quick response to voltage surges (up to 20 ms).

4 Powercom TCA-2000

Profitable price
Country: Taiwan
Average price: 2000 rubles.
Rating (2019): 4.2

Available relay voltage converters for gas boilers are offered by manufacturers from China. The Powercom TCA-2000 has a compact housing that houses 4 European-type output sockets. They are protected against accidental entry of people or objects. For complete safety, all sockets have a ground loop.

Consumers note the presence of an automatic switch that prevents overloading the device and protects it from short circuits. After troubleshooting the electrical network, you must turn it on with the push of a button. The advantages of the stabilizer include the ability to withstand high loads. Even in conditions of poor operation of the electrical network, the correct operation of the boiler is maintained. The model is silent during operation.

3 Huter 400GS

Better sinusoidal current stabilization
Country: China
Average price: 2680 rubles.
Rating (2019): 4.5

The relay stabilizer Huter 400GS has the best value in this category and is great for protecting the electronic part of a gas boiler. It operates in the range from 110 to 260 V with the maximum possible stabilization deviation of no more than 8%. It is easy to connect, has a digital voltage indication, small dimensions and is mounted on the wall. But its main advantage is that it provides a sinusoidal current without distortion at the output.

Owners who have chosen this stabilizer point out other strengths of the Huter 400GS in their reviews. They are expressed in the presence of protection against short circuit, high voltage or overheating of the wiring. In all these emergency situations, automation will disconnect from the network and prevent damage to expensive equipment.

2 RUCELF BOILER-600

Buyer's Choice
A country: Russia (produced in China)
Average price: 3585 rubles.
Rating (2019): 4.8

The relay stabilizer RUCELF KOTYOL-600, produced and developed in Russia, has proven itself in the market of electrical goods. A simple and at the same time reliable protection mechanism for an expensive gas boiler control unit remarkably resists frequent voltage drops, while maintaining accuracy until the end of its service life.

Owners love this compact wall mounted unit. Although it costs more than similar models from other brands, the RUCELF stabilizer stands out with more reliable components and high performance. It is great for gas heaters, the electrical part of which consumes up to 400 watts (these are almost all modern models). The reviews positively assess the joint work of the stabilizer with equipment such as Baxi, Ariston, Ferolli and Vaillant. If there is grounding, the correct connection (phase and zero must come to the appropriate connectors), the stabilizer and the heating boiler connected through it will serve its owner for the maximum possible length of time.

The main performance characteristics of voltage stabilizers of various types

Operating characteristic	Relay	Servo	Triac	inverter
Input voltage, Volt
Response time, milliseconds				instantly
Voltage equalization error
Voltage regulation	stepped		stepped	instant
Surge protection, %
Service maintenance	Not required	Required	Not required	Not required
Service life, years

The summary table does not take into account the cost of equipment, because it largely depends not only on the type of construction, but also on the operating power of the stabilizer. Moreover, in the matter of ensuring the reliability of individual heating systems, the price issue is shifting to the background.

1 Daewoo Power Products DW-TM1kVA

Optimal combination of price and quality
A country: South Korea (made in China)
Average price: 3590 rubles.
Rating (2019): 5.0

The best low cost gas boiler stabilizer with good specifications is Daewoo Power Products DW-TM1kVA. At an affordable price, it has a high efficiency (95%), decent power (1 kW), a small error (8%), a wide voltage drop limit (140-270 V). The response time is 20 ms, the device has protection against interference, overheating, high voltage and short circuit.

Consumers love the wall-mounted model's small footprint, light weight (only 3.285 kg), stylish design and digital display. The only drawback, many consider a short electric cord.

The best electronic stabilizers for gas boilers

Instead of mechanical stabilization switching, thyristors and triacs are used in electronic devices. Devices of this type are distinguished by reliability, high accuracy and speed. In addition, they are unpretentious in operation and do not emit strong noise.

3 IEK Prime 0.5 kVA (IVS31-1-00500)

Best price category
Country: China
Average price: 4520 rubles.
Rating (2019): 4.2

The Italian device Ortea Gemini 10-15 / 7-20 became the most high-precision voltage stabilizer in our review. It exhibits a unique error of 0.5%. The device is designed to work in a single-phase household network with voltage drops at the input from 140 to 290 V. The stabilizer quickly responds to voltage surges (20 ms), overload and short circuit protection is provided.

Domestic consumers appreciate the ability to operate the stabilizer in a wide temperature range (-15...+40°C). The digital display clearly shows input and output voltage readings.

2 Leader PS600W

Large margin of safety
Country Russia
Average price: 9380 rubles.
Rating (2019): 4.8

The stabilizer is manufactured using the best quality components, which determines a long service life. The supported power is optimal for connecting a heating boiler or other equipment that is sensitive to voltage drops. The device generates an output signal without distortion, reliably protecting the electrical circuits of more expensive devices. Stabilization accuracy is provided at the level of 4-5%, which has become one of the best indicators for equipment of this class.

The owners note a fairly wide corridor of fluctuations in the network (155-265V), in which the rectifier remains operational. The presence of protection against high voltage and short circuit is also one of the strengths of this device. The absence of moving parts and a decent level of assembly ensures trouble-free operation with any deviations in network performance. In user reviews, this characteristic is most often mentioned as key to the normal functioning of a gas boiler and heating system.

1 Stihl VoltSaver R1000

The most reliable
Country Russia
Average price: 11653 rubles.
Rating (2019): 5.0

This is the best stabilizer in this category, which is optimal for protecting gas boilers and uninterrupted operation of heating systems. The negative impact of mains voltage fluctuations on the connected electronics can be avoided thanks to the built-in filter, which equalizes the input signal at a speed of 350 V / s, while the error is no more than 4%.

Calm VoltSaver R1000 is designed as a desktop model, characterized by instant response and smooth voltage adjustment. This characteristic was achieved thanks to a multi-stage stabilization system. In their reviews, the owners also highly appreciate the additional security complex that turns off powered devices in various emergency situations (short circuit, overheating of wires, etc.). The presence of two outlets at the outlet and more than excess power for the operation of a gas boiler allows you to connect a kitchen TV or other expensive device to the stabilizer.

The best inverter voltage stabilizers for gas boilers

Stabilizers of this type respond faster than others (instantly) to changes in mains voltage, which provides better equipment protection against surges. They operate on the principle of double conversion, which determines the unique characteristics of the device. In the private sector, due to weather conditions or other reasons, an increase to 380 volts (phase-to-phase short circuit) can easily occur, which will disable even the electronics that are connected through the stabilizer (at its low response speed). Whoever is not threatened by the consequences of an emergency is the owners of inverter protective devices, the best models of which are presented below.

3 Energy PN-500

Ability to work as a UPS
Country Russia
Average price: 7900 rubles.
Rating (2019): 4.6

This stabilizer works on the principle of double conversion of the incoming voltage, providing a reliable power supply to the gas boiler during power surges. Feedback on the operation of this device is more than positive. Owners appreciate the protection of connected equipment against various AC mains fluctuations. The stabilizer immediately breaks the connection when the wiring heats up, short circuits and power surges that go beyond safe operation.

In addition, when connecting special batteries, this device can function as an uninterruptible power supply. The parameters of the device expanded in this way (if the battery capacity meets the required values) can provide autonomous operation of the heating system for up to 12 hours. Thanks to this technical solution, the owners consider Energy PN-500 one of the best stabilizers for gas boilers.

2 SDP-1/1-1-220-T

Stable Performance
Country Russia
Average price: 7270 rubles.
Rating (2019): 4.8

A modern stabilizer operating on the principle of double conversion is produced by the domestic group of companies Ruselt. The device has a fair resistance to network loads and, thanks to the high quality of parts, demonstrates an impressive margin of safety. At the output of the converter, a voltage is generated within the range of 218-222 V (the most accurate stabilization) with a sinusoidal current that does not have high-frequency network interference.

For reliable operation of individual heating systems, some owners successfully use SDP-1 / 1-1-220-T, connecting gas equipment through a stabilizer. In their opinion, this is one of the best devices on the market - this is how users explain their choice in the reviews. The output power allows you to connect devices with a total load of up to 700 W, which means that other expensive equipment can be protected along with the boiler.

1 Stihl IS350

Buyer's Best Choice
Country Russia
Average price: 4956 rubles.
Rating (2019): 5.0

Distinctive features of this stabilizer are the presence of electronic protection against short circuits, internal overheating, network overloads and filtering of impulse noise. The last factor determines the output voltage with an undistorted sinusoid, which ensures the durability of the gas boiler control unit. The equipment works when there is 90 to 310 V input, otherwise the stabilizer will disconnect from the AC mains. Voltage equalization occurs instantly (even an ordinary incandescent lamp does not flicker). This quality of work was liked by the buyers who chose this model.

Stihl IS350 will ensure reliable operation of the heating system and protection of expensive equipment (boiler) from power surges. Made in an elegant metal case, the stabilizer is mounted on the wall and does not take up much space. It can be used to protect a gas boiler, computer equipment, TV, audio equipment and other electrical appliances, the power consumption of which does not exceed 300 watts. These characteristics are also confirmed in the reviews of the owners of the Shtil stabilizer, who consider their choice the most correct decision. Despite being more expensive than other models, the level of protection offered is well worth the investment.