Underfloor Heating Cost Calculator
Get an instant estimate for your underfloor heating project
Total Area: 12.0 m²
Adjust to account for multiple rooms or zones in your project.
Best for:
Bathrooms, kitchens, large open-plan spaces
Most Popular:
Wet systems for whole homes, electric for specific rooms
Installation Time:
Typically 2-4 weeks depending on scope
Energy efficient: 25–35% savings vs radiators
Comfort: Even heat distribution, no cold spots
Space saving: No radiators means more usable floor space
Property value: Adds appeal to modern buyers
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What are the main cost factors for underfloor heating?
The primary costs are: system type (wet vs electric), property type (new build vs retrofit), room size, floor covering, and insulation levels. Retrofit installations cost significantly more due to disruption and complexity. Wet systems are generally most cost-effective for whole-home installations, while electric systems work well for targeted room heating.
How much can I save by switching from radiators?
Underfloor heating systems typically operate 15-30% more efficiently than traditional radiators, leading to significant savings on energy bills. Over a 10-year period, UFH can save £2,000-£8,000 compared to radiator systems, depending on system type, property insulation, and usage patterns. The actual savings depend on your current heating system and energy consumption.
Are there any grants or subsidies available?
Yes — two major schemes directly reduce the cost of a UFH + heat pump upgrade. The Boiler Upgrade Scheme offers up to £7,500 off a qualifying air or ground source heat pump, which pairs perfectly with UFH to deliver maximum efficiency. The ECO4 scheme funds insulation improvements (loft, walls, pipes) for eligible households — better insulation dramatically improves UFH running costs. Combined, these grants can cover 50–100% of a complete upgrade for eligible homeowners. Ask your installer about MCS certification and grant eligibility when getting quotes.
Is underfloor heating worth it for a retrofit/renovation?
Retrofitting underfloor heating is more expensive than installing during new construction, with costs 30–50% higher due to disruption. However, if you're already doing major renovation work (new flooring, structural changes), it can be a good time to install. The long-term efficiency gains — typically 25–35% heating cost reduction — and comfort benefits often justify the investment, particularly when combined with the Boiler Upgrade Scheme heat pump grant.
How long does installation typically take?
Active installation for a wet system typically takes 3–7 days depending on property size and system complexity. Wet systems then require 4–6 weeks for screed to cure before floor coverings can be laid — plan your renovation timeline accordingly. Electric systems are generally installed in 1–2 days with no curing period. Your installer will provide a detailed schedule after the initial site survey.
What floor coverings work best with underfloor heating?
Tile, stone, vinyl, and laminate are ideal for UFH as they conduct heat efficiently. Engineered wood works well with proper underlayment. Thick carpets should be avoided as they insulate the floor and reduce heat output. If you prefer carpet, use low-tog underlayment (maximum 2.5 tog) to allow heat transfer.
Can I control the temperature in different zones?
Yes, most modern underfloor heating systems include zone controls, allowing you to set different temperatures for different rooms or areas. This adds to the initial cost but provides significant comfort and efficiency benefits by heating only occupied spaces.
What about running costs and energy bills?
Running costs depend on system type, property insulation, and usage. Wet systems typically cost £0.50-£0.80/m²/year to operate, while electric systems cost £0.80-£1.20/m²/year. Properties with poor insulation will see 20-30% higher running costs. Smart controls and zone heating can help optimize costs further.