Heating load calculator (estimate)
Estimate heating load from floor area and an insulation-standard coefficient.
Heating load (kW)
7.2
- Heating load (W)
- 7,200
01
Area × coefficient
Heating load is roughly area times a specific coefficient in watts per square metre.
02
The coefficient
A new build to today's standard is around 40 W/m², older buildings 80–120 W/m². Set it to match.
03
For rough planning
The estimate helps with a first sizing and quote — the exact figure comes from a full heating-load calculation.
Rough estimate, no warranty; does not replace a heating-load calculation to DIN EN 12831. The W/m² coefficient depends heavily on insulation standard.
From measurement to finished quote
Worked out the quantities? In DasHandwerk.xhub you turn them into a clean quote in minutes — and the invoice in one click.