How much cable do I need to heat the room?

The amount of cable for room heating depends on the heat loss and area of the room.

For example, room heat loss 100 W/m², area 10 m², the power required will be 100 W/m² x 10 m² = 1000 W. In this case, the heating cable CTAV-18, 57m, 1000W, 230V is selected.

We recommend to use the Heat Math underfloor heating calculator on our website: or contact Comfort Heat partners.