Heating Calculator

Window Size

Add your external windows and doors here...

Enter zeros for no external windows or doors.

Room Usage

What do you use this room for?

Low Activity (Such as Bedroom or Storage)

Moderate Activity (Such as Living Room or Office)

High Activity (Such as Kitchen or Gym)

Special Use (Such as Bathroom or Server Room?)

Temperature

Outer Walls

Desired Temperature

Does the room have a north facing wall?

Save Results?

If you'd like to save your results please give it a name below.

Please note, this data is saved to your browser memory so will not be available if you clear your browser caches/browsing history or use a privacy sensitive browser.

You can also retrieve and edit your saved records at a later date, just click your saved record name via the green panel on the right, then "Load Record Data" to fill the form with your saved data, be aware, it will overwrite any data you already have filled out.