Cost GuidesUpdated May 2026By TradeMatch Editorial Team·8 April 2026·Updated 12 April 2026·6 min read

Underfloor Heating Costs UK 2026: Electric vs Water Systems

Underfloor heating provides even, energy-efficient warmth and frees up wall space. Here is a guide to UFH costs, types and installation in 2026.

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Underfloor Heating Costs

System	Material (per m²)	Installation (per m²)	Total (per m²)
Electric mat	£25–£50	£10–£20	£35–£70
Electric cable	£20–£40	£15–£25	£35–£65
Water (wet) system	£30–£60	£30–£50	£60–£110

For a typical 20m² room: electric UFH costs £700–£1,400, water UFH costs £1,200–£2,200. Water systems are cheaper to run but more expensive to install.

Electric vs Water: Which to Choose?

Electric UFH is best for:
- Single rooms or retrofits
- Bathrooms and kitchens
- Under tile and stone floors
- Properties without access to a boiler

Water UFH is best for:
- Whole-house installations
- New builds or major renovations
- Properties with heat pumps (optimal pairing)
- Long-term running cost savings

Water UFH running costs are roughly 25% lower than electric, but installation costs are 40–60% higher. For single rooms, electric makes more financial sense.

Frequently Asked Questions

Can you retrofit underfloor heating?

Electric UFH mats can be retrofitted under new flooring with minimal disruption (only 3–5mm height increase). Water systems require lifting floors and are typically only practical during a full renovation or extension.

Does underfloor heating work with all flooring?

It works best with tile, stone and vinyl (high thermal conductivity). Engineered wood works well. Solid hardwood needs careful specification. Carpet can work but must be low-tog (under 1.5 tog) to allow heat through.