August save 6% off £60

August save 6% off £60

Free Next Day Delivery / Order Before 1pm

Free Unlimited Returns

100% Money Back Guarantee

BTU Calculator

Fill out the form below with the details of your room and let our BTU Caculator do the rest for you.

Height of room (m):
Width of room (m):
Length of room (m):
Window Area (m²):

Type of room:

What is below the room?

What is above the room?

Type of outside walls:

Type of windows:

Number of outside walls:

Watts Required:
BTU's Required:
This site uses cookies. By continuing to browse this site you are agreeing to our use of cookies. Find out more here.