Is underfloor heating more expensive to run than radiators?
No — wet underfloor heating typically runs more efficiently than radiators because it operates at lower flow temperatures, often reducing energy costs.
Running Costs: UFH vs Radiators
Wet underfloor heating usually costs less to run than radiators for the same comfort level, because it operates at much lower flow temperatures (35–55°C vs 70–80°C for radiators).
Why UFH Is More Efficient
- Large surface area (the whole floor) radiates heat evenly, so lower water temperatures achieve the same comfort
- Lower flow temperatures pair especially well with condensing boilers and heat pumps, improving overall system efficiency
- Even heat distribution reduces the need to overheat rooms to compensate for cold spots
Electric UFH (for small areas like bathrooms) can be more costly to run per hour than wet systems, so we typically recommend wet UFH for whole-room or whole-house heating. Speak to RARE about a UFH system designed for your home's layout.
Reviewed by RARE Plumbing London Engineering Team — Gas Safe registered engineers serving prime London since 2013.
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