How would you like to calculate?
Choose the quickest way to size your heating system.
Enter the total area of the floor you wish to heat, excluding fixed items like kitchen units, baths and toilets.
Free floor area is the space available for heating after removing permanent fixtures and fittings.
Width × length gives the room area. The optional unheated area is deducted before your mats are suggested.
- Click on the grid to place the corners of your room.
- A minimum of 3 points are needed to create a shape.
- Click the first point of the shape, or use the button below, to close it.
Your recommended heating
Review the calculated mats or cables, then choose an upgrade if you prefer a higher specification range.
Illustrative Layout
Choose your extras
Add insulation and installation accessories if required. Your total updates automatically.
For timber subfloors (e.g. plywood, chipboard), add fixings:
Select your thermostat
Choose the thermostat you would like with your heating system, or continue without one.
Compare Thermostats
THPWIFISTAT5i 16A App Controlled WIFI Underfloor Heating Touch-Button Thermostat The Heating Partnership
- Wi-Fi Enabled
- App Control (iOS/Android)
- Touchscreen Display
- 7-Day Programmable
- Frost Protection
- Holiday Mode
- Open Window Detection
- Energy Consumption Statistics
- Floor & Air Sensor
- Child Lock
THPSTAT4i 16A Underfloor Heating Touch-Button Thermostat The Heating Partnership
- Programmable Touch Buttons
- 7-Day Programmable
- Frost Protection
- Holiday Mode
- Open Window Detection
- Floor & Air Sensor
- Child Lock
Review your system
Check your heating, extras and thermostat selection before adding everything to the cart.
- Choosing a selection results in a full page refresh.
- Press the space key then arrow keys to make a selection.