Types of Underfloor Heating
There are two main types of underfloor heating available for UK homes. Understanding the difference is the first step to deciding which is right for you.
Wet (Hydronic)
- ✓Water pipes under floor connected to boiler
- ✓More expensive to install (£50-£100 per m²)
- ✓Much cheaper to run long-term
- ✓Best for new builds or major renovations
- ✓Works brilliantly with heat pumps
Electric
- ✓Electric heating mats/cables under floor
- ✓Cheaper to install (£20-£50 per m²)
- ✓More expensive to run day-to-day
- ✓Ideal for single rooms (bathrooms, kitchens)
- ✓Easier to retrofit
How Much Does Underfloor Heating Cost to Install?
Installation costs vary widely depending on the system type, room size, and whether you're building from scratch or retrofitting into an existing property.
| System Type | Typical Cost |
|---|---|
| Wet system (whole house, new build) | £5,000–£15,000+ |
| Wet system (single room retrofit) | £1,500–£4,000 |
| Electric system (bathroom) | £300–£800 |
| Electric system (kitchen) | £500–£1,500 |
Is It Cheaper to Run Than Radiators?
Wet UFH
Yes - runs at lower temperatures (35-45°C vs 70-80°C for radiators), so uses less energy. Particularly efficient with a modern condensing boiler or heat pump.
Electric UFH
Usually more expensive to run than a gas central heating system, but often used in rooms where you want targeted warmth - particularly bathrooms, where the comfort factor outweighs the running cost.
Pros of Underfloor Heating
- ✓Even heat distribution - no cold spots
- ✓Frees up wall space (no radiators)
- ✓Works well with all floor types (tile, stone, wood, carpet)
- ✓More energy efficient when paired with a heat pump
- ✓Low maintenance once installed
- ✓Increases property value
Cons of Underfloor Heating
- ✗Higher upfront installation cost
- ✗Slower to heat up than radiators (30-60 mins vs 10-15 mins)
- ✗Retrofitting can be disruptive and expensive
- ✗Not ideal if you need instant heat
- ✗Floor build-up height can be an issue in some properties
Is Underfloor Heating Worth It? Our Verdict
The honest answer is: it depends on your circumstances. Here are three common scenarios with our clear verdict.
New builds or major renovations
Yes, almost always worth it. When the floor is already up and the system can be planned into the build from the start, the cost-benefit is compelling - particularly when combined with a heat pump or efficient condensing boiler.
Single room retrofits (bathroom or kitchen)
Often yes, especially electric systems. The installation cost is manageable, the comfort improvement is immediate, and disruption is limited to one room. A tiled bathroom with electric UFH is a very popular and practical upgrade.
Whole-house retrofit in an existing home
Depends on budget and how long you plan to stay. Lifting floors throughout an occupied home is disruptive and expensive. If you're planning a full renovation and intend to stay long-term, it can pay off. If you're looking for a quick improvement, consider doing it room by room.
What Floors Work With Underfloor Heating?
Not all floor finishes are equal when it comes to underfloor heating. Thermal conductivity is key - the better the floor conducts heat, the more efficient your system will be.
| Floor Type | Compatibility |
|---|---|
| Tile, stone, and polished concrete | Best - conducts heat brilliantly |
| Engineered wood and luxury vinyl tile (LVT) | Good |
| Carpet | Works but less efficient - use low tog rating (max 1.5 tog) |
| Solid hardwood | Check first - can warp, needs careful temperature control |