Wet underfloor heating typically takes 1–3 hours to warm up, depending on the floor construction, screed thickness, insulation, and floor covering.
Tile and stone floors usually transfer heat faster than carpeted floors. Underfloor heating is designed to provide steady, consistent heat, and it is usually run for longer periods, rather than switched on and off like radiators.
Underfloor heating takes longer to warm up than radiators because it has a high thermal mass. While radiators quickly heat the surrounding air via convection, underfloor systems must first heat a thick layer of screed or flooring material before that warmth radiates into the room.
However, this dense thermal mass is exactly what makes it so efficient. Once the floor reaches temperature, it retains and distributes heat evenly for hours with minimal energy input. Because it covers a massive surface area, it only requires water heated to around 29°C—compared to a radiator’s 70°C—significantly reducing your boiler’s workload and lowering running costs.
If you would like a quote for your project or you are thinking of swapping over your old radiator system to underfloor heating, click the quote button below and we’ll look forward to hearing from you!
