Underfloor Heating Installation Cost
£800–£3,000
typical UK range
Updated
Underfloor heating installation in the UK costs £800–£3,000 for a wet (hydronic) system in a single room, or £150–£500 for an electric mat system. Whole-house wet UFH costs £5,000–£12,000+. Wet systems work with heat pumps and are more efficient long-term; electric systems are cheaper to install in small areas.
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How much does each option cost?
| Type / scope | Typical cost | Notes |
|---|---|---|
| Electric underfloor heating mat (single room, up to 15m²)Electric heating mat under tiles — cheapest and fastest to install, suitable for bathrooms and kitchens; higher running costs than wet systems | £150–£500 | Electric heating mat under tiles — cheapest and fastest to install, suitable for bathrooms and kitchens; higher running costs than wet systems |
| Wet UFH — single room renovation install (screed)Wet underfloor heating pipes in a new screed layer in one room during a bathroom or kitchen refurbishment | £800–£2,000 | Wet underfloor heating pipes in a new screed layer in one room during a bathroom or kitchen refurbishment |
| Wet UFH — single room under timber floorWet UFH plates or spreader plates between joists under a timber floor — more complex installation, lower heat output than screed | £1,200–£3,000 | Wet UFH plates or spreader plates between joists under a timber floor — more complex installation, lower heat output than screed |
| Wet UFH — whole ground floor (new build or renovation)Complete ground floor wet underfloor heating system including manifold, pipework, and controls — typically done during a renovation | £3,000–£7,000 | Complete ground floor wet underfloor heating system including manifold, pipework, and controls — typically done during a renovation |
| Wet UFH — whole house (ground and upper floors)Full house wet UFH; upper floor installation is significantly more complex (timber floor construction requires spreader plates) | £6,000–£12,000 | Full house wet UFH; upper floor installation is significantly more complex (timber floor construction requires spreader plates) |
| Manifold and controls upgrade (existing wet UFH system)Replacing old manifold and controls with modern zoned controls compatible with smart thermostats | £400–£1,200 | Replacing old manifold and controls with modern zoned controls compatible with smart thermostats |
What affects the price?
- System type — electric mats are cheaper to install per room but more expensive to run; wet (hydronic) systems are more expensive to install but cheaper to run and work with heat pumps
- Floor construction — wet UFH in a concrete/screed floor is most efficient; installation under timber floors requires spreader plates and achieves lower heat output
- Area coverage — economy of scale means whole-house installations cost significantly less per m² than single-room installations
- Screed depth and type — standard sand/cement screed needs to be at least 65mm above the UFH pipe; liquid (anhydrite) screeds can be thinner (45mm) but cost more per m²
- Integration with existing boiler or heat pump — wet UFH is most efficient with a heat pump (low-flow temperatures) or a condensing boiler; older boilers may need upgrading to work efficiently with UFH
- Location — London and South East rates are 20–30% higher than average
- Heating engineer day rate — wet UFH installation is a specialist skill; expect to pay £300–£500/day for an experienced UFH installer
What's included in the price?
- Design of the UFH loop layout for the room(s) or whole property
- Supply and installation of UFH pipe or electric mat
- Manifold installation and zone control setup (wet systems)
- Thermostat or smart control installation
- Connection to boiler or heat pump (wet systems)
- Pressure testing of the wet system before screed pour
- Commissioning, flow balancing, and handover instructions
- For electric systems: electrical connection (typically requires an electrician)
How long does it take?
An electric mat installation in a single bathroom takes 2–4 hours for the heating element itself (plus separate electrician time for connection). A wet UFH installation in a single room takes 1–2 days including pipework, manifold, and controls. A whole-house wet UFH installation takes 3–7 days of heating engineer time (excluding screed pour, which is a separate contractor). The screed must cure for 4–7 days before the system can be slowly brought up to temperature, and full warm-up takes a further 4–7 days — plan for 2–3 weeks before the system is at full performance.
Do I need one?
Underfloor heating provides several advantages over radiators: even heat distribution at floor level (no hot spots or cold corners), frees wall space for furniture, silent operation, and is more efficient when paired with a heat pump. It's most cost-effective to install during a renovation when floors are being replaced anyway. Retrofitting to existing rooms is possible but more disruptive (raising floor level with screed, or using spreader plates under timber floors). Wet UFH is the preferred heating system for new heat pump installations — heat pumps work at their most efficient with the low-flow temperatures that UFH requires.
How do you avoid overpaying?
- Install wet UFH during a bathroom or kitchen renovation rather than as a standalone project — the disruption of opening up the floor is already accepted
- For a single bathroom, an electric mat is cost-effective despite higher running costs — the small area means the energy premium is modest
- Get multiple quotes for whole-house UFH — prices vary significantly between specialists
- Consider a hybrid system: wet UFH on the ground floor (where it's easy to install during renovation), radiators upstairs — this is very common and provides excellent efficiency
- If installing wet UFH during a new build, the cost per m² drops significantly compared to retrofit — raise it during planning if you're building or doing a major extension
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Frequently asked questions
We’re happy to answer all your questions.
How much does underfloor heating cost to install in the UK?
Electric underfloor heating in a single room costs £150–£500 installed. Wet (hydronic) underfloor heating in a single room costs £800–£2,000; a complete ground floor costs £3,000–£7,000; a whole house costs £6,000–£12,000+. Wet systems are more expensive to install but significantly cheaper to run long-term.
Is wet or electric underfloor heating better?
Wet (hydronic) underfloor heating is more efficient to run and works optimally with heat pumps — the combination is the UK government's preferred low-carbon heating solution. Electric is cheaper to install and is practical for small areas like bathrooms. For whole-house heating, wet UFH is almost always the better long-term choice despite the higher install cost.
Can underfloor heating be installed under existing floors?
Yes. Electric mats can be laid under tiles or wooden floors without significantly raising floor level. Wet UFH can be installed under existing timber floors using aluminium spreader plates between floor joists — this retrofits without raising floor level but achieves slightly lower heat output than a screed installation. A full screed installation requires raising the floor by 65–100mm.
How long does underfloor heating take to heat up?
Wet underfloor heating in a screed floor has more thermal mass and takes 1–2 hours to reach operating temperature from cold. It's best left running at a lower temperature continuously (or on a schedule) rather than turned on and off. Electric systems heat up much faster — typically 20–30 minutes. Both systems work well with programmable thermostats.
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