Underfloor Heating: Pros, Cons and Is It Worth It in 2026

Underfloor heating has moved from a luxury extra to a mainstream choice for renovations and new builds across London — and for good reason. But it isn't the right fit for every property, so it's worth understanding both sides before committing.

The Benefits

• Even, whole-room warmth instead of hot spots near a radiator and cold corners elsewhere.
• Frees up wall space — no bulky radiators to design around.
• Runs efficiently at lower flow temperatures, which pairs well with modern condensing boilers and heat pumps.
• Works well under tile, stone, engineered wood and most floor coverings.
• Can lower running costs over time compared with an old, inefficient radiator system.

The Trade-Offs

• Installation is more disruptive than fitting a radiator, especially retrofitting into an existing solid floor.
• Wet (water-based) systems have a slower response time — they're best left running at a steady background temperature rather than switched on and off.
• Electric underfloor heating is quicker to install but typically costs more to run than a wet system.
• Certain floor coverings (thick carpet with underlay, for example) can reduce efficiency.

Wet vs Electric: Which Should You Choose?

Wet systems, connected to your boiler or heat pump, are usually the better long-term choice for whole-house heating and larger areas — they cost more to install but are cheaper to run. Electric mats are ideal for smaller rooms like a bathroom or kitchen extension, where a simple, fast-to-fit solution matters more than running costs.

We install, repair and maintain both wet and electric underfloor heating systems, and we're happy to talk through which option suits your property, budget and renovation timeline.