How to calculate the required boiler capacity

It is very important to correctly calculate the power of the heating equipment. If it exceeds the real needs If the building is kept warm, part of the heating costs will simply be wasted. And equipment with low performance will not provide the room with the necessary amount of heat.

A number of factors affect the calculation of boiler capacity:

• The climate conditions in which you live;
• The area of the heated room;
• The degree of insulation of the house;
• Heat loss of the building;
• The amount of heat required to heat water.

Next, we calculate using a simple formula: P=k×S/10,

where P is the boiler power,

S is the heated area,

k is the heat loss coefficient.

The heat loss coefficient can vary depending on the type of building:

• For buildings with increased thermal insulation, well-insulated walls, floors, roofs and double-glazed windows - k = 0.8
• For buildings with an average level of thermal insulation (for example, buildings with double brickwork, a standard roof and a small number of windows), k = 1
• For structures with low thermal insulation or non-insulated at all, this coefficient will be the highest - k = 1.2-1.5

It may seem that an accurate calculation of the boiler's capacity is not so important. After all, you can simply buy more powerful equipment, so to speak, "with a margin". We assure you that you should not do this. This can lead to:

• Decrease in boiler efficiency
• Increased costs of purchasing the necessary items
• Rapid wear and tear of components
• Condensation in the chimney and much more.

If you intend to use a dual-circuit system for water heating, you need to increase the power of the equipment by 25%. We do not recommend choosing a boiler with a larger power reserve, as this may lead to a decrease in efficiency.

Now that you have already decided on the boiler capacity, it's time to call us! Boilers of TM Altep have a wide range of capacities for any type of premises.