Option A
Underfloor heating
Wet or electric heating installed beneath the floor. Wet systems run at lower flow temperatures and spread heat evenly across the room.
Underfloor heating vs radiators: which is better for your home?
Updated June 2026 9 min read
Quick verdict
Wet underfloor heating can be more efficient and more comfortable than radiators, especially with heat pumps and new builds, but it costs much more to install and is disruptive to retrofit. Radiators remain the practical budget choice for most existing homes.
Option B
Radiators
Traditional wall-mounted radiators connected to a gas boiler, heat pump or other wet heating system.
Side-by-side comparison
Choose wet underfloor heating for new builds, extensions and major renovations where comfort and low flow temperatures matter. Choose radiators for lower upfront cost, faster heat-up and easier retrofit work.
Annual running cost
Underfloor heating
£860 to £1,050 in a 3-bed gas exampleBetter
Radiators
£1,100 to £1,500
Installation cost
Underfloor heating
£6,000 to £12,000 whole house
Radiators
£2,500 to £5,500Better
Disruption
Underfloor heating
High, especially retrofit
Radiators
ModerateBetter
Heat-up time
Underfloor heating
1 to 3 hours
Radiators
10 to 20 minutesBetter
Comfort
Underfloor heating
Even heat and warm floorsBetter
Radiators
Hot near radiators, cooler elsewhere
Best for
Underfloor heating
New builds, extensions and heat pumps
Radiators
Retrofits and lower budgets
| Compare | Underfloor heating | Radiators |
|---|---|---|
| Annual running cost | £860 to £1,050 in a 3-bed gas exampleBetter | £1,100 to £1,500 |
| Installation cost | £6,000 to £12,000 whole house | £2,500 to £5,500Better |
| Disruption | High, especially retrofit | ModerateBetter |
| Heat-up time | 1 to 3 hours | 10 to 20 minutesBetter |
| Comfort | Even heat and warm floorsBetter | Hot near radiators, cooler elsewhere |
| Best for | New builds, extensions and heat pumps | Retrofits and lower budgets |
Pros and cons
Underfloor heating pros and cons
Pros
- ✓Even heat distribution
- ✓Lower flow temperature
- ✓Good with heat pumps
- ✓Frees wall space
- ✓Comfortable underfoot
Cons
- -High upfront cost
- -Disruptive retrofit
- -Slow to respond
- -Electric UFH can be expensive to run
- -May raise floor height
Radiators pros and cons
Pros
- ✓Lower installation cost
- ✓Fast heat-up
- ✓Easy to retrofit or replace
- ✓No floor height issue
- ✓Wide choice of styles
Cons
- -Less even heat
- -Uses wall space
- -May need oversized radiators with heat pumps
- -Can circulate dust
- -Higher flow temperature
Cost examples
Small flat
Radiators usually cost less to install. Electric underfloor heating can work for a small bathroom but is costly for whole-home heating.
- Likely fit
- Radiators
3-bed semi
Wet underfloor heating may save running costs, but the extra installation cost means payback takes years.
- UFH install
- £7k-£12k
New build
Underfloor heating is strongest when installed during construction, especially with a heat pump.
- Likely fit
- UFH
When to choose Underfloor heating
- ›You are building or renovating heavily
- ›You want even room comfort
- ›You plan to use a heat pump
- ›You can absorb higher upfront cost
- ›You want clear wall space
When to choose Radiators
- ›You are retrofitting on a budget
- ›You need fast heat-up
- ›You want less disruption
- ›You already have pipework and radiators
- ›You may move before payback
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FAQs
Is underfloor heating cheaper to run than radiators?
Wet underfloor heating can be cheaper because it runs at lower flow temperatures, but savings depend on insulation, floor type, controls and heat source.
Can I install underfloor heating in one room?
Yes. Many homes use it only in a bathroom, kitchen or extension while keeping radiators elsewhere.
Which is better for a heat pump?
Underfloor heating is often better because heat pumps work efficiently at lower flow temperatures. Radiators may need to be larger.
Is electric underfloor heating cheap to run?
No, not for large areas. It can be useful in small rooms, but direct electric heating has a high running cost.
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