Radiator checker
Check whether a room's radiators could work with a heat pump.
Probably undersized for low-temperature heating
Estimated room heat requirement
About 1.3 kW
On a cold winter day
Estimated radiator output at lower flow temperature
About 0.4 kW
With 45°C water
A proper heat-loss calculation is required before installation.
Advanced settings
How this estimate works
Room heat need is the floor area times a typical heat loss for the insulation level, for a room with a normal ceiling height kept at 21°C on a cold day.
Radiator output uses typical catalogue figures for each type and size, then the standard method for how output falls when the water is cooler. A heat pump usually runs radiators at around 45°C rather than the 70°C or so a boiler uses, so the same radiator gives roughly a third of the heat.
Real rooms differ: windows, outside walls and draughts all matter. Treat this as a first check only.