Electric underfloor heating running cost calculator

Use our calculator below to find out the potential cost of running a ThermoSphere electric underfloor heating system in your home.

Enter the area of floor space you wish to heat
Regional electricity rates apply
How many hours you will use your underfloor heating
Your estimated running cost per day£

Step 1: 

Fill in the calculator to calculate your underfloor heating running costs.

Step 2: 
Fill in your details

Hit the 'next' button and enter your details followed by any query or question you may have. Then simply click submit.

Step 3: 

We will respond shortly to any questions you have. You will also receive your quotation via the email address you provided.

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Representative example for ThermoSphere 150W Mesh underfloor heating

Representative running costs for a ThermoSphere 150W/m2 mesh system used as a primary heat source in a well-insulated environment.

1 Hour2.1p4.2p8.4p10.5p21.1p31.6p52.7p
2 Hours4.2p8.4p17p21p42.2p63.2p105.4p
3 Hours6.3p12.6p25.3p31.6p63.2p94.8p158.1p
4 Hours8.4p17p33.7p42.2p84.3p126.5p210.8p
5 Hours10.5p21p42.2p52.7p105.4p158.1p263.4p
6 Hours12.6p25.3p50.6p63.2p126.5p189.7p316.1p
7 Hours14.8p29.5p59p73.8p147.5p221.3p367p
8 Hours16.9p33.7p67.4p84.3p168.6p253p421p

This approximation does not imply any warranty or guarantee of energy consumption and/or electricity costs.

The following reasonable assumptions have been made to calculate these approximate daily running costs:

  • System is installed as a primary heat source in a well-insulated dwelling, built to current Part L regulations.

  • 150W/m2 system under a 10mm ceramic tile on 10mm Insulation Board

  • Energy price of 14.05p/kWh (average UK price at time of printing)

  • The system is controlled by an intelligent programmable thermostat with floor sensor

  • Floor temperatures set at 24 degrees Celsius.

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