Underfloor Heating vs Radiators — Which Wins in a UK Home?
Underfloor heating (UFH) runs cooler than radiators (35–45°C vs 65–75°C), making it ideal for heat pumps. But retrofit costs vary wildly. Here is the honest UK comparison.
Step-by-step method
Install cost
Wet UFH: £75–£120/m² retrofit, £45–£70/m² new build. Radiators: £250–£450 per rad fitted. A 100m² house = £8–12k UFH vs £3–5k rads.
Running cost
UFH runs 15% cheaper than rads at the same temperature because low flow temps suit condensing boilers and heat pumps better.
Response time
UFH: 1–3 hours to warm up (screed inertia). Radiators: 15–30 minutes. UFH suits constant-temp lifestyle, rads suit intermittent.
Best combination
Downstairs UFH (open plan, tiled), upstairs rads (bedrooms respond faster). This is the standard UK new-build spec.
Frequently asked questions
Can you retrofit wet UFH?+
Yes with low-profile systems like Nu-Heat LoPro Max (only 18mm) but usually needs floor levelling and door trim adjustments.
Does UFH work with a heat pump?+
Yes — it's the ideal emitter for air-source or ground-source heat pumps because of the low flow temperature requirement.