How Much Does Underfloor Heating Cost in the UK? (2026 Guide)
Underfloor heating (UFH) costs vary enormously — from a few hundred pounds for a single bathroom electric mat to £15,000+ for a whole-house wet system in a new build. That wide range is exactly why so many homeowners struggle to budget for it.
This guide breaks down the real numbers for 2026: supply costs, installation labour, running costs, and the factors that can push your quote up or down. By the end, you'll know what to expect — and how to get an accurate quote from a local installer.
Electric Underfloor Heating Costs
Electric UFH is the simpler, lower-cost option for installation. It uses heating mats or cables laid under the floor covering. No pipes, no manifold, no plumber required.
Per Room (Electric)
| Room | Floor Area | System Cost | Labour | Total |
|---|---|---|---|---|
| Bathroom | 4–6 m² | £150–£300 | £150–£250 | £300–£550 |
| Kitchen | 10–15 m² | £300–£600 | £200–£350 | £500–£950 |
| Bedroom | 12–18 m² | £350–£700 | £250–£400 | £600–£1,100 |
| Living room | 20–30 m² | £600–£1,200 | £350–£500 | £950–£1,700 |
Costs include heating mat/cable, thermostat, and basic installation. Floor covering not included.
Key Cost Factors for Electric UFH
- System type: Heating mats (under tiles) are cheapest. Foil systems (under wood/LVT) cost slightly more. Loose cables (custom layouts) cost most per m².
- Thermostat: A basic programmable thermostat adds £40–£80. A smart WiFi thermostat (Heatmiser, Nest, etc.) adds £150–£300.
- Floor type: Tiling over an electric mat is straightforward. Floating wood floors over foil systems require an uplift, relaying, and possible adhesive costs.
- Existing floor condition: If the subfloor needs levelling or DPM (damp-proof membrane) work, budget an extra £100–£400.
Wet (Hydronic) Underfloor Heating Costs
Wet UFH circulates warm water through a network of pipes under the floor. It's more expensive to install but cheaper to run, especially when paired with a heat pump or condensing boiler.
Whole-House Wet UFH Costs
| Property Size | Supply (Pipes + Manifold) | Labour | Total Installed |
|---|---|---|---|
| 2-bed flat (80 m²) | £2,500–£4,000 | £2,000–£3,500 | £4,500–£7,500 |
| 3-bed house (110 m²) | £3,500–£5,500 | £3,000–£5,000 | £6,500–£10,500 |
| 4-bed house (150 m²) | £5,000–£8,000 | £4,000–£7,000 | £9,000–£15,000 |
| 5-bed house (200 m²) | £7,000–£12,000 | £5,500–£9,000 | £12,500–£21,000 |
New build costs are typically 20–30% lower than retrofit as screed and floors are not yet laid.
Retrofit Overlay Systems
If you can't or don't want to relay floors, retrofit overlay board systems (e.g., Nu-Heat LoProfile, Wunda Thin) can be installed at 15–18mm depth on top of existing subfloors.
- Supply cost: £35–£55 per m²
- Labour: £20–£35 per m²
- Total: approximately £55–£90 per m² installed
These systems sacrifice some heat output but work well in rooms with adequate door clearance.
Labour Costs Breakdown
Labour typically accounts for 40–60% of a wet UFH installation. Here's what you're paying for:
- Heat loss calculation: A proper installer will calculate your home's heat loss room by room. This is essential — without it, the system will be undersized or oversized. Budget £200–£500 for a detailed survey.
- Pipe layout and stapling: Typically priced per m² of floor area (£15–£30/m²).
- Screed or board installation: If pouring liquid screed, add £15–£25/m². If using sand/cement screed, this is often included.
- Manifold installation: Each zone manifold installation is typically £200–£400.
- Commissioning: Pressure testing, filling and balancing the system. Usually included in overall quote, but verify.
- Electrical connection (for thermostats and pump): Add £150–£400 for an electrician if not included.
Running Cost Comparison
| System | Typical Running Cost | Best For |
|---|---|---|
| Electric UFH | 15–20p per kWh × floor load | Small areas, bathrooms |
| Wet UFH + gas boiler | ~30–40% less than radiators | Whole house |
| Wet UFH + heat pump | 60–70% less than electric UFH | Whole house, new builds |
Electric UFH running costs for a bathroom (5 m² mat): roughly £30–£60/year if used 2–3 hours per day in winter.
Wet UFH whole-house with a gas boiler: annual saving of £200–£600 over conventional radiators (varies by insulation, controls, and floor coverings).
Factors That Affect Your Quote
- Floor area: The biggest single driver of cost.
- Floor type: Screed over wet pipes is most efficient. Wooden floors require lower water temperatures and may need a dedicated overlay system.
- Heat source: Gas boiler, air source heat pump, or ground source heat pump all affect system design and cost.
- Insulation: UFH requires proper insulation beneath the pipes/cables. If your floor insulation is inadequate, factor in £10–£20/m² for insulation boards.
- Number of zones: Each zone (room or area with separate control) adds manifold connections and thermostat cost.
- New build vs retrofit: Retrofit always costs more — floors must come up, screed must be relaid, and there's more disruption.
- Location: Labour rates in London and the South East are typically 20–30% higher than the Midlands and North.
- Urgency and seasonality: Emergency or off-season installs may attract premium rates.
New Build vs Retrofit: Cost Comparison
| New Build | Retrofit | |
|---|---|---|
| Wet UFH (whole house) | £5,000–£12,000 | £9,000–£21,000 |
| Disruption | Minimal | High (floors up, screed relaid) |
| System options | All options available | Overlay boards often preferred |
| Payback period | 4–8 years | 6–12 years |
New builds are the sweet spot for wet UFH — pipes are laid before screed is poured, dramatically reducing labour time.
Getting an Accurate Quote
Online calculators can give you a ballpark, but the only way to get an accurate price is a site visit from a qualified installer. Here's what a good survey includes:
- Room-by-room heat loss calculation
- Floor type assessment and any preparation work needed
- Heat source compatibility check
- Zone control recommendations
- Written, itemised quote with product specs
Get quotes from local UFH installers — browse by your area or find an installer near you.
We recommend getting at least 3 quotes. Prices can vary by 30–50% between installers for the same job, especially on larger wet UFH projects.
Frequently Asked Questions
Is underfloor heating expensive to run?
Electric UFH in a single bathroom typically costs £30–£80/year. Whole-house wet UFH with a modern gas boiler usually costs less to run than conventional radiators — savings of £200–£600/year are achievable with good controls and insulation.
Does underfloor heating add value to a property?
Yes. Surveys consistently show UFH is among the top features buyers value. It's particularly appealing in kitchens and bathrooms. Adding UFH to a whole house can increase perceived value by 3–5%.
How long does underfloor heating last?
Wet UFH pipe systems are typically warranted for 25 years and can last 50+ years if properly installed and maintained. Electric mats typically carry 10–25 year warranties.
Can I install underfloor heating myself?
Electric mats are sometimes DIY-friendly for the physical installation, but the electrical connection must be done by a Part P qualified electrician. Wet UFH should always be professionally installed — incorrect pipe spacing or pressure testing can lead to expensive problems.
How long does installation take?
A single bathroom electric mat installation takes 1–2 days. A whole-house wet UFH retrofit can take 1–3 weeks depending on the number of rooms and screed cure time.
Ready to get quotes? Find local UFH installers in your area and compare costs from qualified professionals.