What room would you like to work out the heat-loss calculations for?
You can calculate more rooms later.
Calculate heating requirements for each room of your house.
Our heating calculator / BTU calculator can help work out the appropriate heat output for each room of your home. We'll show you a list of radiators that will generate enough heat to keep your room at an efficient yet comfortable temperature.
Once you have your list of suitable radiators, simply add them to your basket and checkout when you are ready.
Please note - Calculations based on Delta-T 50°C (Δ-T50°C).
You can calculate more rooms later.

Free
Delivery
next day
Delivery
Lowest
price
guarantee
30-day
returns