Many users dream of installing an electric underfloor heating in a city apartment or in a private house. But not all of them can imagine how much it will cost for its arrangement and subsequent operation. Before making a final decision, it is first recommended to calculate how much electricity it consumes, that is, how much the expenditure part of the budget for this item will increase.
Heating element power
First you need to decide which system to choose for floor heating in an apartment.
There are three known varieties:
- Coating in the form of a thin heating film.
- Special thermal mats.
- Heating electrical cable.
The first of these options is usually used when laying under linoleum or laminate, while the second and third varieties can be installed under tiles (ceramics).
Each of them is characterized by its own specific power indicator, namely:
- Film covering consumes from 150 to 400 watts per square meter.
- For a heating cable, this figure is 120-140 watts per square meter. meter.
- Thermal mats differ only slightly from cable analogs (from 120 to 210 watts per unit area).
Note: The average power consumption from the network ranges from 120 to 250 watts per square meter.
These indicators are usually sufficient not only for auxiliary heating, but also for complete heating of the room.
Cost amount
After everything has been clarified from the power, they begin to calculate the costs. For these purposes, a formula of the following form is suitable:
- S - area of heated rooms;
- P is the power of the system selected for a specific type of heater;
- 0.4 is a coefficient that takes into account the percentage of floor overlap.
As an example, consider the procedure for calculating the consumption of thermal energy for a heating system with a capacity of about 200 watts / square meter. in a room of 30 m2. It looks like this:
From the formula it follows that 2.4 kW will be spent on heating for a full hour. If we take into account that during the day at least 9 hours are spent on this, the daily power consumption will be 9x2.4 = 21.6 kW.
In conclusion, it remains to multiply the resulting figure by the tariff for a specific region of Russia. If, for example, it is 4.48 rubles, then a day of heating for this area costs 96.76 rubles (it will cost 2,903.04 rubles per month).
Important! The above calculation is an approximate estimate of the cost of underfloor heating, taken to the maximum.
In reality, with averaged estimates, it can be reduced by about 40%.
Ways to reduce costs
It is possible to reduce consumption in a situation with a warm floor due to the following techniques:
- High-quality insulation of heated rooms (due to this, it is possible to save up to 35% of thermal energy).
- The correct choice of the place for installing the thermostat (at the coldest point in the room). This will reduce energy consumption by another 30%.
- Installation of a multi-tariff electricity meter.
In order to save money, it is recommended to install a warm floor only in open places (where furniture is not supposed to be placed).