Calculators

Heat loss calculator (BTU, Therm, Natural gas)

This is an approximate calculator of U-values and total heat loss of house, using DIN4108 and BS EN ISO 6946:1997.

Vent. facade – Ventilated facade;
Plaster – 10mm cement plaster.
Plasterboard – Plasterboard a ceiling or drywall(only inside).

Note: The calculated data may not coincide with the final data.

Example heat loss calculation

House size

One room

Values in
metre
Height
Length




Wall
MaterialHeat insulationOptional

Vent. facade

Plasterboard

Plaster

Width (mm)

Depth (mm)

Roof/Ceiling
MaterialHeat insulationOptional

Depth (mm)

Depth (mm)

Plasterboard

Floor
MaterialOutside

Heat insulate
(Polystyrene/EPS - 0.04 W/mK)

Depth (mm)

Depth (mm)

Windows
AmountSize (mm)Pack
x
Temperature

Set value
in °C
InsideOutside
+
-
Aeration