Underfloor Heating Cost Calculator Get Instant Cost Estimates
2026 UK Cost Guide at a Glance
| Room Type | Electric | Wet |
|---|---|---|
| Bathroom (5m²) | £300–£600 | £450–£950 |
| Kitchen (15m²) | £900–£1,800 | £1,350–£2,850 |
| Living Room (25m²) | £1,500–£3,000 | £2,250–£4,750 |
| Ground Floor (60m²) | £3,600–£7,200 | £5,400–£11,400 |
Costs include supply and installation. New builds at lower end; retrofit at higher end. Use the calculator below for your exact estimate.
Calculate the real costs of electric and wet underfloor heating for your home. Compare systems, see running costs, and get a clear UK estimate in minutes.
Underfloor Heating Cost Calculator
Get an instant estimate for your underfloor heating project. Compare electric vs wet systems and see installation and running costs.
Project Details
Enter the total floor area to be heated
Ofgem price cap: 27p/kWh (Oct-Dec 2026)
Ofgem price cap: 6.9p/kWh (Oct-Dec 2026)
Electric UFH
Heating mats or cables
Annual Running Costs
Wet UFH
Water pipes and manifold
Annual Running Costs
Cost Comparison Summary
Important Notes
- • These are estimated costs based on average UK prices and may vary significantly by region and supplier
- • Professional installation costs can vary from £300-£1,000+ depending on complexity and location
- • Running costs depend on usage patterns, thermostat settings, and energy efficiency
- • Wet systems may require additional costs for boiler upgrades or manifold installation
- • Always get multiple quotes from certified installers for accurate pricing
Calculate Pipe Spacing
Planning a wet UFH system? Use our pipe spacing calculator to determine optimal spacing and pipe length requirements.
Open Pipe Spacing Calculator →Detailed Cost Analysis
Our detailed costs guide covers installation scenarios, ROI calculations, real-world examples, and expert insights.
Read Complete Costs Guide →How our cost calculator works
What We Calculate
- Material costs based on room size and system type
- Installation costs for professional or DIY options
- Annual running costs based on current UK energy prices
- Break-even analysis to compare long-term value
- Personalised recommendations based on your specific needs
Data Sources & Accuracy
Our calculator uses current market data from leading UK suppliers and installers, updated regularly to reflect real‑world pricing.
Price Sources Include:
- • Major UFH equipment suppliers
- • Certified installer labour rates
- • Current Ofgem energy price caps (electricity ~27p/kWh, gas ~6.9p/kWh)
- • Regional cost variations
Results are estimates for planning purposes. Always obtain professional quotes for accurate project pricing.
Simple 3-Step Process
Enter Your Details
Room size, type, insulation level, and energy rates
Get Instant Results
Compare electric vs wet systems side-by-side
Make Informed Decisions
Use recommendations and guides to proceed
Why use our cost calculator?
Save Money
Avoid overpriced quotes by knowing realistic costs before speaking to installers. Plan your budget accurately.
Make Better Decisions
Compare electric vs wet systems objectively with real data. Understand long-term costs and benefits.
Save Time
Get instant estimates without waiting for multiple quotes. Start your planning process immediately.
UK-Specific
Calculations based on UK energy prices, building regulations, and installation practices. Relevant and accurate.
Free to Use
No registration, no hidden fees, no email required. Professional-grade calculator available to everyone.
Expert-Backed
Developed by underfloor heating specialists with years of installation experience across the UK.
Ready to take the next step?
Now that you have cost estimates, here's how to proceed with your underfloor heating project.
Find Installers
Get quotes from certified local installers for accurate pricing.
Find Installers → Analyse Your Quote →Calculate Again?
Try different room sizes, insulation levels, or installation options to see how costs change.
Use Calculator AgainUK Underfloor Heating Costs: Full 2026 Breakdown
Underfloor heating installation costs vary significantly depending on system type, room size, and whether you're working on a new build or retrofit. Here's what you can realistically expect to pay in 2026.
Installation Costs by Room Type
| Room | Size | Electric Cost | Wet Cost |
|---|---|---|---|
| Bathroom | 5m² | £300–£600 | £450–£950 |
| Kitchen | 14m² | £840–£1,680 | £1,260–£2,660 |
| Living Room | 20m² | £1,200–£2,400 | £1,800–£3,800 |
| Ground Floor (new build) | 60m² | £3,600–£7,200 | £5,400–£7,800 |
| Ground Floor (retrofit) | 60m² | £4,200–£8,400 | £6,000–£11,400 |
Annual Running Costs
Based on current UK energy prices: electricity at 27p/kWh (Ofgem Q1 2026), gas at 6.9p/kWh. Assumes 4 hours use per day.
| Room | Size | Electric/year | Wet/year |
|---|---|---|---|
| Bathroom | 5m² | £50–£90 | £25–£50 |
| Kitchen | 14m² | £140–£275 | £70–£130 |
| Living Room | 20m² | £200–£400 | £100–£200 |
Key Factors That Affect Your Cost
New Build vs Retrofit
New build installations are significantly cheaper — no flooring to remove, no existing services to work around. Retrofit can add 20–40% to the cost due to labour, floor removal, and screed drying time.
System Type
Electric mats are the cheapest to install (from £40/m² DIY) but cost more to run. Wet systems require a manifold, pump, and boiler connection — higher upfront but lower running costs over 30+ years.
Insulation Quality
Good insulation boards (typically £10–25/m²) are essential. Poor insulation means heat escapes downward, increasing running costs by up to 25%.
Floor Covering Choice
Tiles deliver 71 W/m² heat output vs 48 W/m² for carpet — a 48% difference. The right floor covering directly impacts efficiency and running costs. See our flooring compatibility guide.
When Does Wet UFH Pay for Itself?
For areas over 30m², wet UFH typically becomes cheaper than electric over 5–7 years through lower running costs. For smaller rooms like bathrooms, electric UFH rarely needs to "pay back" — the convenience and warmth justify the modest running cost.
Example: A 60m² ground floor saving £400/year in running costs vs electric would recoup a £2,000 premium installation cost in 5 years.
Underfloor Heating Cost Calculator FAQ
How much does underfloor heating cost per m² in the UK?
Electric underfloor heating costs £60–£120 per m² installed in the UK. Wet (water) underfloor heating costs £90–£190 per m² installed. New builds are at the lower end; retrofit projects are higher due to additional labour and disruption.
Is underfloor heating expensive to run?
Wet UFH running costs are typically £0.07–£0.26 per hour depending on room size. Electric UFH costs £0.12–£0.49 per hour. For a typical bathroom used 4 hours/day, annual running costs are around £50–£90 for electric, or £25–£50 for wet systems. Read the full guide to whether underfloor heating is expensive to run.
What is the cheapest underfloor heating system?
Electric underfloor heating is cheaper to install (from £60/m²) but more expensive to run. Wet systems cost more upfront (from £90/m²) but have lower running costs, making them cheaper long-term for areas over 30m². For small rooms like bathrooms, electric is usually the most cost-effective choice overall.
How much does it cost to run underfloor heating for a year?
Annual running costs vary by room size and system. A 20m² living room costs roughly £200–£400/year for electric UFH or £100–£200/year for wet UFH, based on current UK energy prices (electricity 27p/kWh, gas 6.9p/kWh).
How accurate are the cost estimates?
Our estimates are based on current UK market prices and are typically accurate within ±20%. Actual costs can vary based on location, installer, property specifics, and material choices. Always obtain professional quotes for final pricing.
What's not included in the calculator costs?
Additional costs may include floor covering removal, subfloor preparation, boiler upgrades (for wet systems), electrical work, VAT, and any structural modifications. These vary by typically 15–30% between projects and should be discussed with installers.