Normal gas consumption for heating a house is 200m2. Is it profitable to heat a house with liquefied gas from a gas tank? Find out how much you can save

Houses 100 m 2, 150 m 2, 200 m 2?
When designing a heating system, you need to know what it will cost during operation.

That is, to determine the upcoming fuel costs for heating. Otherwise, this type of heating may subsequently be unprofitable.

How to reduce gas consumption

A well-known rule: the better the house is insulated, the less fuel is spent on heating the street. Therefore, before starting the installation of the heating system, it is necessary to carry out high-quality thermal insulation of the house - the roof / attic, floors, walls, replacing windows, hermetic sealing contour on the doors.

You can also save fuel by using the heating system itself. Using instead of batteries, you will get more efficient heating: since heat is distributed by convection currents from the bottom up, the lower the heater is located, the better.

In addition, the normative temperature of the floors is 50 degrees, and the radiators - an average of 90. It is obvious that the floors are more economical.

Finally, you can save gas by adjusting the heating over time. It makes no sense to actively heat the house when it is empty. It is enough to withstand a low positive temperature so that the pipes do not freeze.

Modern boiler automation () allows remote control: you can give a command to change the mode through a mobile provider before returning home (). At night, the comfortable temperature is slightly lower than during the day, and so on.

How to calculate main gas consumption

The calculation of gas consumption for heating a private house depends on the power of the equipment (). Power calculation is performed when choosing . Based on the size of the heated area. It is calculated for each room separately, focusing on the lowest average annual temperature outside.

To determine the energy consumption, the resulting figure is divided approximately in half: throughout the season, the temperature fluctuates from a serious minus to plus, gas consumption varies in the same proportions.

When calculating the power, they proceed from the ratio of kilowatts per ten squares of the heated area. Based on the foregoing, we take half of this value - 50 watts per meter per hour. At 100 meters - 5 kilowatts.

Fuel is calculated according to the formula A = Q / q * B, where:

• A - the desired amount of gas, cubic meters per hour;
• Q is the power required for heating (in our case, 5 kilowatts);
• q - minimum specific heat (depending on the brand of gas) in kilowatts. For G20 - 34.02 MJ per cube = 9.45 kilowatts;
• B - the efficiency of our boiler. Let's say 95%. The required figure is 0.95.

We substitute the numbers in the formula, we get 0.557 cubic meters per hour for 100 m 2. Accordingly, gas consumption for heating a house of 150 m 2 (7.5 kilowatts) will be 0.836 cubic meters, gas consumption for heating a house of 200 m 2 (10 kilowatts) - 1.114, etc. It remains to multiply the resulting figure by 24 - you get the average daily consumption, then by 30 - the average monthly.

Calculation for liquefied gas

The above formula is also suitable for other types of fuel. Including for liquefied gas in cylinders for. Its calorific value, of course, is different. We accept this figure as 46 MJ per kilogram, i.e. 12.8 kilowatts per kilogram. Let's say the boiler efficiency is 92%. We substitute the numbers in the formula, we get 0.42 kilograms per hour.

Liquefied gas is calculated in kilograms, which are then converted to liters. To calculate the gas consumption for heating a house of 100 m 2 from a gas tank, the figure obtained by the formula is divided by 0.54 (the weight of one liter of gas).

Average monthly consumption, approximately:

• consumption of liquefied gas for heating a house of 100 m 2 - about 561 liters;
• consumption of liquefied gas for heating a house of 150 m 2 - approximately 841.5;
• 200 squares - 1122 liters;
• 250 - 1402.5 etc.

A standard cylinder contains about 42 liters. We divide the amount of gas required for the season by 42, we find the number of cylinders. Then we multiply by the price of the cylinder, we get the amount needed for heating for the entire season.

Video on how to reduce boiler gas consumption.

A very simple formula for such a calculation looks the most simple - 1 kW of heat energy is spent on heat supply of 10 m2 of the building area. A more accurate formula operates not with areas, but with the cubic capacity of the house, taking into account the ceiling height in the room as well. However, for dwellings of the usual type with a ceiling height of 2.5-2.7 meters, the above very simple ratio is valid. The correct calculation of the need for heat energy operates not only with the volume of the heated space, but also with the heat resistance of walls, openings and ceilings. Moreover, in this case, the average annual temperature and other invisible but important factors are taken into account.

Boiler plant room

But in order to determine the volume of fuel, the usual formula will be enough for us: 1 kilowatt = 10 square meters. As a result, it is necessary to spend 15 or 20 kW on heating a structure with an area of ​​​​150 or 200 "squares", based on this. And this is only per hour. But the boiler does not consume gas every minute. The period of work / downtime is divided here in the ratio of 50/50 percent. Thanks to this, a house of 150 square meters will spend 180 kW (15x24 / 2) per day, and housing with an area of ​​two hundred square meters - 240 kW.

The cold season in our latitudes lasts from October to April - 7 months or 210 days. Due to this, the annual consumption of heat energy will be 37,800 and 50,400 kW. We will look at these quantities in our further calculations.

What is better to heat with gas or electricity and how to save on heating?

Volumetric calculation of fuel for heating a house

So, above in the text, we found that 9.3 or 6.55 kW of heat energy is released from a cubic meter or liter of natural or liquefied gas based on this. And this means that to generate 37,800 and 50,400 kW (costs for the cold season for houses of 150 and 200 squares), we need:

• 4064 and 5419 cubic meters of network gas (37800/9.3 and so on).
• 5771 and 7695 liters of liquefied fuel (37800 / 6.55 and so on).

For accuracy, we must add 10% to these values, because the efficiency of a gas-fired boiler is 90 percent (a tenth of the gas combustion energy is wasted). As a result, we look at the following picture:

• Estimated gas consumption for home heating with an area of ​​150 m2 is 4471 m3 or 6348 liters.
• The approximate fuel consumption for heating a building for two hundred squares is 5960 m3 or 8464 liters.

Propane tanks

The indicated gas consumption is calculated for the entire cold season - seven months, from the beginning of October to the end of April. Thanks to this, in a warm year, you will most likely spend less gas than we calculated. But even these results make it possible to determine what is more profitable - natural or liquefied fuel.

Which gas to choose - which is more profitable?

To connect to the main gas pipeline, the client will need to pay for the project and assembly work. And these expenses cannot be called insignificant. Growing appetites of gas services make gasification of dwellings a very expensive undertaking. Still, all these expenses will pay off during operation. As of March 2017, the cost of a cubic meter of gas, depending on the region of the Russian Federation, can range from 4.44 to 8.66 rubles. The average cost is 6.55 rubles. As a result, heat supply with network gas to a house of 150 or two hundred square meters, taking into account the estimated consumption rate during the season, will cost 29,825 and 39,038 rubles.

Liquefied fuel does not require a tie-in to the highway, but for its storage it is necessary to build a gas tank - a container that receives the required amount of fuel. Moreover, this container will sometimes have to be filled with gas, which is transported to the site using specialized vehicles, and such a service is expensive. And in addition, the gas tank will have to be repaired and operated. After all, the safety of all residents of a house heated by liquefied gas depends on its condition.

LPG storage

At the beginning of spring 2017, a liter of liquefied gas at gas stations cost from 11 to 20 rubles, depending on the region of the Russian Federation. The average price of this fuel was 15.5 rubles. Thanks to this, heating with liquefied gas for a house of 150 square meters will cost 98,394 rubles. For a dwelling with an area of ​​​​two hundred square meters, you need to pay much more - 131,192 rubles. As you can see, liquefied fuel overtook the price of network gas by 3.3 times. Due to this, the conclusions are relatively profitable / unprofitable by themselves - real (main) gas, with all the bureaucracy and the difficulties of the connection process, will be more profitable than liquefied fuel.

How to reduce the use of fuel to the owner of a private house

The sums mentioned above can stun an impressionable tenant or an ordinary resident of the city. Well, what can you do - "own house" was an expensive pleasure at all times. However, unlike a city dweller living in an apartment, the owner of private housing is able to change the costs of heat supply in his own favor.

Insulation work at home will help reduce heating costs

To do this, he will have to do the following:

• Thermally insulate the facade, foundation, roof, attic and basement ceiling - even a thin layer of thermally insulating material can win back at least a couple of thousand, or even a whole dozen, from the gas bill.
• Replacing old windows with modern glass packages, putting a heat-resistant panel in the doorway is another 5-10 thousand minus. Moreover, it is worth taking up windows and doors first of all, because they generate at least 40 percent of heat losses.
• Install a heat accumulator in the basement or boiler plant, replace the wiring diagram with a double-circuit or collector version, which provides the possibility of spot thermoregulation of radiators, buy a boiler with a high efficiency. Today on sale there are excellent 95 percent devices. In this case, savings can be up to 10-15 percent of the total bill.

In a word, it is necessary, the very first thing, to increase the heat resistance of the house, and secondly, to use more energy-efficient equipment. And no one is forcing you to make these changes in one season. You can start from the windows, then improve the boiler and get close to the surface of the walls and ceilings. As a result, you will be able to save up to a quarter of the announced costs.

Thematic publications:

Cheap heating in a private house. Personal experience

Do-it-yourself Russian oven - detailed instructions

Oil recovery furnace: how to build such a heating device with your own hands

The average gas consumption in a private house or apartment is usually calculated in order to determine the cost of heating, hot water supply (DHW) and cooking. This is done at the design stage of a building or before choosing an energy carrier and a boiler unit for comparison with other types of fuel.

There is a simplified methodology on how to calculate the maximum and average gas consumption for heating and hot water, and it will be discussed in this material. Although it will not be possible to perform such a calculation with great accuracy, you can find out the order of the numbers for the upcoming payment.

Calculation of gas consumption for heating

Before you calculate the consumption of natural gas for heating a house or apartment, you need to know one important parameter - the heat loss of a residential building. Well, when it is correctly calculated by specialists at the design stage, this will significantly increase the accuracy of your calculations. But in practice, such data is often not available, because few homeowners pay due attention to design.

Advice. If you have such an opportunity, then you should order the calculation of heat losses in a private design organization. This will help not only to find out the average gas consumption for heating a private house, but also to understand whether it needs to be insulated.

The amount of heat loss of the building is determined by the power of the heating system and the boiler itself or a gas convector. Therefore, when choosing a gas boiler for a cottage or when installing autonomous heating for an apartment, you have to use the following averaged methods for determining heat loss and equipment power:

1. According to the general square of the building. The essence of the method is that for heating each square meter, 100 W of heat is required with a ceiling height of up to 3 m. At the same time, for the southern regions, a specific value of 80 W / m² is taken, and in the northern regions, the consumption rate can reach 200 W / m².
2. According to the total volume of heated premises. Here, from 30 to 40 W are allocated for heating 1 m³, depending on the region of residence.

Note. The presented specific heat consumption is correct at a temperature difference between the street and indoors of about 40 °C.

It turns out that heating a housing area of ​​100 m² requires about 10-12 kW of heat per hour during severe cold weather and when the house is located in the middle lane. Accordingly, for a cottage of 150 m², about 15 kW of thermal energy will be required, for 200 m² - 20 kW, and so on. Now you can also calculate what maximum gas consumption will show on the coldest days, for which the formula is used:

V = Q / (q x efficiency / 100), where:

• V is the volume flow rate of natural gas per hour, m³;
• Q is the value of heat loss and power of the heating system, kW;
• q is the lowest specific calorific value of natural gas, averaging 9.2 kW/m³;
• Efficiency - the efficiency of a gas boiler or convector.

Note. The efficiency of heat generators running on natural gas ranges from 84-96%, depending on the design. The simplest non-volatile units have an efficiency of 86-88%, convectors 84-86%, high-tech condensing boilers - up to 96%.

Calculation example

As an example, it is proposed to take an apartment of 80 m² in the middle zone of the Russian Federation. To heat it in the coldest period, 80 m² x 100 W = 8000 W or 8 kW will be required. It is planned to install a modern natural gas condensing boiler with an efficiency of 96%. Then the calculation of gas consumption for heating looks like this:

V = 8 / (9.2 x 96 / 100) = 8 / 9.768 = 0.91 m³/h

It is easy to calculate how much fuel is needed per day: 0.91 x 24 = 21.84 m³. But to determine the cost of natural gas consumption, you need to know more real numbers, for example, its average consumption in an apartment for the entire heating season. Since there are significant temperature fluctuations during this season, it is assumed that the average amount of fuel will be half the maximum.

Then the average daily gas consumption for heating the apartment will be 21.84 m³ / 2 = 10.92 m³. It remains only to multiply this number by the duration of the heating season, in Moscow it lasts 214 days: 10.92 x 214 = 2336.9 m³. Having made a monthly breakdown, it is easy to determine the cost of autonomous heating of an apartment.

To calculate the average gas consumption in an apartment, you can go the other way. First, find out the gas consumption for obtaining 1 kW of thermal energy, and then multiply this value by 8 kW. The calculation formula for calculating the volume of fuel per 1 kW of heat is as follows:

v = 1 / (q x efficiency / 100), where v is the desired volume in m³ / h.

Accordingly, 1 / (9.2 x 0.96) = 0.113 m³ / h, and for the whole apartment it will be 0.113 x 8 = 0.905 m³ / h with a small error. Further calculations are carried out in the same way as described above.

Note. The amount of gas consumed by the gas stove and for hot water supply is not taken into account, which will be discussed later.

Gas consumption for DHW

When water for household needs is heated using gas heat generators - or a boiler with an indirect heating boiler, then to find out the fuel consumption, you need to understand how much water is required. To do this, you can raise the data prescribed in the documentation and determining the rate for 1 person.

Another option is to turn to practical experience, and it says the following: for a family of 4 people, under normal conditions, it is enough to heat 80 liters of water once a day from 10 to 75 ° C. From here, the amount of heat required for heating water is calculated according to the school formula:

Q = cmΔt, where:

• c is the heat capacity of water, is 4.187 kJ/kg °С;
• m is the mass flow rate of water, kg;
• Δt is the difference between the initial and final temperatures, in the example it is 65 °C.

For the calculation, it is proposed not to convert volumetric water consumption into mass water consumption, assuming that these values ​​are the same. Then the amount of heat will be:

4.187 x 80 x 65 = 21772.4 kJ or 6 kW.

It remains to substitute this value in the first formula, which will take into account the efficiency of the gas column or heat generator (here - 96%):

V \u003d 6 / (9.2 x 96 / 100) \u003d 6 / 8.832 \u003d 0.68 m³ of natural gas 1 time per day will be spent on heating water. For a complete picture, here you can also add the consumption of a gas stove for cooking at the rate of 9 m³ of fuel per 1 living person per month.

How to determine the consumption of liquefied gas

Home heating, organized using liquefied fuel (propane or butane) has its own characteristics. Most often, homeowners install special containers - gas tanks, refueling for the entire heating season. Heating with cylinders is much less common. But there are no particular difficulties in calculating the consumption of liquefied gas for heating a house.

The same formula is taken, only the specific heat of combustion of LPG (propane-butane), equal to 46 MJ / kg or 12.8 kW / kg, is substituted into it. Please note: the calculated calorific value of fuel refers to a unit of mass (kilogram), and at a gas station the price is calculated per volume (liters). The results can be recalculated after, first you need to find out the consumption of liquefied gas by a conventional boiler (efficiency - 88%) that heats a house with an area of ​​80 m² from the previous example:

V \u003d 8 / (12.8 x 88 / 100) \u003d 8 / 11.264 \u003d 0.71 kg / h.

Knowing that 1 liter of liquefied gas has a mass of 540 g (reference value), it is easy to calculate the propane consumption in liters: 0.71 / 0.54 = 1.3 liters. This is 1.3 x 24 = 31.2 liters of gas per day, 31.2 x 30 = 936 liters per month. Now, taking into account changes in weather conditions, in order to determine the average consumption of liquefied gas, the resulting figure must be halved: 936 / 2 = 468 liters per month. Gas consumption for heating for the year will be (31.2 l / 2) x 214 days = 3338.4 l (for Moscow).

How to reduce gas consumption for heating and other needs

In this section, we will talk about banal things that many have heard about. But their importance does not become less from banality. After all, this is a direct way to reduce the amount of energy used, including the high consumption of gas used to heat a private house.

The following measures will significantly reduce consumption:

1. Conduct high-quality insulation of the building, preferably from the outside.
2. If possible, automate the heating system so that the rooms of the house warm up well during the stay of people in them, and in their absence, a standby temperature of 10-15 ° C is maintained.
3. Activate the timer for the indirect heating boiler so that the water in it is prepared for a certain time of day.
4. Arrange heating of the house with water heated floors.
5. Purchase the most economical gas boilers - condensing.

All these measures will bring even more benefits and will reduce gas consumption if you save yourself. It is possible that it will be possible to install automation only partially or not at all, then you will have to manage the system yourself. By the way, modern controllers for boilers have built-in remote control functions via the Internet or a cell phone.

It is difficult to create comfort and coziness in a house without a traditional heating system. When choosing the appropriate equipment, it is important to know the approximate gas consumption for heating a house of a certain area. Based on these data, it is easy to calculate how much you have to pay for indoor heat per year.

Blue fuel is supplied centrally or stored in special tanks - cylinders or gas holders. The first option is the most rational and economical, since the operating costs for heating with main gas are several times lower. However, old pipes reduce efficiency, and natural fuel itself is not always of first-class quality, which increases costs. Autonomous heating systems operate on an expensive liquefied form. The cost of 1 liter will increase even more if transport costs for the delivery of cylinders are included in it.

The main consumption characteristics for heating with liquefied gas depend on the evaporation surface area (the larger it is, the higher the device's ability to convert liquid into a vapor phase). Horizontally located tanks are considered more advantageous. In general terms, known physical parameters are used for calculations.

The cost of heating with main gas is determined based on the power of the boiler.

Methodology for calculating gas for heating a house with examples

The financial costs of heating a building by the traditional method depend on many parameters: the type of windows, the quality of wall insulation, the height of ceilings, the ratio of floor areas and window openings, the required temperature, and other variable external factors. It is not possible to determine the exact value of costs, therefore, an average value is calculated.

With centralized gas supply, the maximum number of kWh per month is equal to the product of the area of ​​\u200b\u200bthe heated building, the boiler power and the number of hours in a month. However, homeowners are more interested in how to find out the gas consumption for space heating for the year. To do this, the duration of the heating season in monthly terms (for Russia on average - 7) is multiplied by the value obtained. The average annual costs are equal to half of the final value. Costs for autonomous gas supply (cylinders) are calculated based on the physical characteristics of liquefied gas: calorific value - 23,500 kJ / l; density - 0.52 kg/l; the amount of thermal energy released during the combustion of 1 liter of fuel - 6.53 kWh.

The average cost of filling a 50-liter cylinder is 680 rubles (the cylinder is filled by 80%, there are 42.5 liters in the container). So 1 liter of gas costs 16. With a boiler with an efficiency of 93%, 1 kWh is estimated at 2.63.

1. Calculation for a house of 100 m2

2. Calculation for a house of 200 m2

• In order to keep warm in such a building, a boiler with a capacity of 20 kWh is installed. Monthly maximum consumption: 20 x 30 x 24 = 14,400 kWh. Annual costs: 14,400 x 7 = 100,800 kWh. According to the methodology, the average calculation of natural gas for heating a house of 200 m2 is: 100,800 / 2 = 50,400 kWh. In monetary terms: 50,400 x 0.31 = 15,624 rubles.
• If we are talking about liquefied gas in cylinders, then 36,000 kWh per year is spent to heat the building. At a cost of 1 kWh equal to 2.63 rubles, the average annual costs are: 36,000 x 2.63 = 94,680.

Ways to reduce the cost of heating a house with gas

1. Maximum blocking of building heat losses. Even at the design stage, care should be taken about the compactness of the structure.

2. Installation of modern high-quality equipment.

3. Combining cylinders into a group reduces gas consumption in liters for heating a house, but for cottages with an area of ​​​​more than 200 m2, liquid fuel is expensive.

4. The use of automatic systems for adjusting the temperature of the air in the room (reducing heating at night, changing the heat supply, depending on external conditions, maintaining a fixed temperature).

Autonomous gasification has two significant columns in the estimate: installation of a gas tank and annual fuel consumption. We will tell you how much you will spend on liquefied petroleum gas (LPG) when living on an area from 50 to 800 m 2.

The whole article in 1 table

Popular house areas	Gas consumption per month	Gas consumption during the heating season (7 months)	Gas consumption per year

LPG at a price of 17.80 rubles/l as of 01/29/2019.

Gas consumption calculator for home heating

We made a calculator based on heat loss at home. The room warms up competently if the heating compensates for the thermal energy that the building loses through the roof, doors, walls, windows per unit of time.

The calculations include the height of the ceilings, the presence of an attic or basement, building material with different heat losses:

foam blocks - 32.7 kW / m 2;

brick - 27.6 kW / m 2;

tree - 26.1 kW / m 2.

Calculate online

House area (m2)

Ceiling height (m)

Attic

No Yes

None Heated Unheated

house material

Foam blocks Brick Wood

How exactly is the calculation

The final indicator of LPG consumption per year is derived using several formulas:

We calculate the gas consumption without hot water supply (kW / h): house area × ceiling height × material heat loss × attic and basement coefficient.

We find the gas consumption with DHW (kW / h): consumption without DHW × coefficient for DHW.

We translate the kW / h indicator into Kcal / h, then into m 3 / h, then into l / h.

Calculate the annual consumption: l/h × operating hours of the boiler per year.

In the process of calculations, we take into account a number of indicators:

The coefficient for accounting for hot water supply is 1.15.

The coefficient of the attic and the heated basement is 0.95.

The coefficient of the attic and unheated basement is 1.

Coefficient without attic + heated basement - 1.

Coefficient without attic + unheated basement - 1.05.

The coefficient without an attic and without a basement is 1.1.

The coefficient for converting energy (kW) to calories (Kcal) is 1.163.

The conversion factor from m 3 to liters of LPG is 2.37.

Boiler operating hours per year - 2,265.

Boiler efficiency - 0.92.

Unaccounted for gas consumption variables in a private house

The calculator still gives the average result. Much more data is needed to make accurate predictions:

Desired room temperature.

The average temperature of the coldest week of the year.

Number of windows, their height and width.

Window to floor area ratio: 10-50%.

Type of windows: conventional with double glazing, double glazing, double glazing.

Number of floors, upper and lower floors.

Characteristics of the outer walls:

masonry in 1-3 bricks 25-76 cm thick;

log house made of logs with a diameter of 20-25 cm;

log house from a bar 10-20 cm thick;

frame wall 20 cm thick (board, mineral wool, board);

foam concrete 20-30 cm thick.

Important adjustments are made by in-house gas equipment:

the number of burners on the stove;

the presence of an oven;

real (not passport!) gas boiler power;

device type: standard or condensing boiler.

The condensing boiler uses the potential of water vapor from the products of gas combustion. The equipment uses the received heat as efficiently as possible and reduces fuel consumption by 15%.

If you want to determine the gas consumption for your home, taking into account all the data, contact an engineer.

The gas tank is selected according to the number of fillings. The optimal indicator is 1-2 times a year. The minimum tank should be enough for 7-8 months - the heating season.

Consumption of liquefied gas per season

According to SP 131.13330.2012 Building climatology (updated edition of SNiP 23-01-99), the heating season in Russia is 207 days. It's about 7 months.

Also important information: the boiler does not work around the clock. On average, heating operates 10 hours a day.

We carried out calculations based on the initial data:

brick house without attic and basement;

floor height 3.2 m;

The efficiency of the gas boiler is 92%.

Indicators for the frequency of refueling are averaged. We have set the same fuel costs for each month. In reality, accommodation can be seasonal or short-term, consumption differs depending on the season.

The ratio of the area of ​​\u200b\u200bthe house and the volume of the gas tank (GG)

GG volume (m 3 )	Full gas station GG (l)	How much gas is enough (month)
		50-100 m2	150 m2	200 m2	250 m2	300 m2	350-450 m2	500-600 m2	800 m2
		3 802 l/year	5 703 l/year	7 603 l/year	9 504 l/year	11 405 l/year	17 107 l/year	22 809 l/year	30 412 l/year
2.5	2 125	6.7	4.5		2.7		1.5	1.1	0.8
2.7	2 295			3.6		2.4	1.6	1.2	0.9
4.6	3 910						2.7		1.5
4.8	4 080	12.8	8.5	6.4	5.1	4.2	2.8	2.1	1.6
4.85	4 112		8.6	6.5	5.2	4.3	2.9	2.2	1.6
	4 250	13.4			5.4	4.5		2.2	1.7
6.4	5 440		11.4	8.5	6.8	5.7	3.8	2.8	2.1
6.5	5 525	17.4	11.6	8.7	6.9	5.8	3.9	2.9	2.2
6.6	5 610	17.6							2.2
8.6	7 310			11.5		7.7		3.8	2.9
9.1	7 735	24.4			9.7		5.4
9.15	7 777	24.5	16.4	12.3	9.8	8.2	5.5	4.1	3.1
9.6	8 160	25.7				8.6	5.7	4.3	3.2
	8 500			13.4	10.7	9 Capacity reserve too large or too small
optimal
perfect	Best to install for the heating season
with a margin	A single charge is enough for a year

Houses with an area of ​​800-1000 m2 are serviced by:

gas tanks of industrial volumes of more than 10 m 3 (installation is more difficult);

two containers located side by side (8.6, 9.1 or 9.15 m 3).

Liquefied gas consumption per month and year

Let's go through the costs of refueling a gas tank for houses of different sizes. We use the current LPG price at the beginning of 2019 - 17.80 rubles / l. This is the cost of refueling in our company.

House area (m 2)	Gas consumption per month (l)	Gas price per month (rub.)	Gas consumption per year (l)	Gas price per year (rub.)

Thus:

gas consumption for heating a house of 100 m 2 - 68 thousand rubles a year;

gas consumption for heating a house of 150 m 2 - 101 thousand rubles a year;

gas consumption for heating a house of 200 m 2 - 136 thousand rubles a year.

We have selected examples of using autonomous heating on the ForumHouse forum. Owner experiences vary. In the project, the insulation of the house, the climate, the needs of the residents and the quality of the boiler are important.

Case 1 The user actively spends LPG - permanent residence with regular showers. A 2,300 l refill lasts almost 2 years at a room temperature of at least 21°C. Expenses are reduced by using the fireplace 6 times a month - 3 hours of burning and 9 hours of smoldering.

Yearly expense: 20,700 rubles (1150 liters at 18 rubles/l). House 125 m2.

Case 2 The user insulated the house well and installed a low-temperature boiler. In winter, did not take hot water. The daytime temperature in the rooms is 23°C, the night temperature is 20°C. Daily gas consumption from 6 to 12 liters.

Yearly expense: 15,000 rubles (1000 liters at 15 rubles/l). House 120 m2.

Case 3 The user heats the house and the garage. There are problems in insulation: heat loss through the door, floor and ceiling. Gas consumption is about 15 liters per day. The day temperature in the rooms is 22°C, the night temperature is 19°C.

Yearly expense: 81,000 rubles (5,475 liters at 15 rubles per liter). House and garage 165 m2.

Case 4 The user lives at the dacha on weekends. Heats only the first floor of the two. On weekdays, in the absence of residents, the temperature is automatically maintained at 7 ° C. DHW has not been started yet. Applies remote control of heating through a ZONT room thermostat with its own SIM card.

Yearly expense: 33,900 rubles (2,275 liters for 14.90 rubles/l). House 190 m2.

History instead of conclusions

The user with the nickname Blondinka 99 permanently lives in a frame house with an area of ​​100 m2. The temperature in the rooms is maintained at 25°C.

One refueling of the 4,800 l gas tank was enough for 3 years of use! The expense was 20 thousand per year.