Radiator size calculator for your room.
Enter the room and the water temperature - see the watts and the radiator length.
The room needs about
~2,200 W
~7,507 Btu/h
E.g. type 22, 600 × 2,600 mm: 2,226 W at 55/45 °C
| Type | 300 mm | 500 mm | 600 mm | 900 mm |
|---|---|---|---|---|
| type 11 | over 3 m | over 3 m | over 3 m | over 3 m |
| type 21 | over 3 m | over 3 m | over 3 m | 2,400 mm |
| type 22 | over 3 m | 3,000 mm | 2,600 mm | 2,000 mm |
| type 33 | over 3 m | 2,100 mm | 1,900 mm | 1,400 mm |
- 600+accounts
- 10,000+m² calculated
- 2,000+underfloor zones
- 100+installers
How to size a radiator for a room
Room heat losswater temperaturemakers' datasheetstype and length
The watts are a W/m² estimate, the radiator a median of several makers' datasheets.
Every radiator in the house, in the app.
The radiators module checks every room and sets the flow temperature for the house.
See the radiators module →