How Underfloor Heating Works
Wet underfloor heating (UFH) circulates warm water through a network of pipes laid beneath your floor surface, providing gentle, even heat that rises naturally throughout the room. Unlike radiators which create convection currents and hot spots, UFH distributes warmth uniformly across the entire floor area. The system operates at lower water temperatures than radiators (30–45°C vs 60–75°C for a gas boiler), which makes it the ideal partner for a heat pump. Every 1°C reduction in flow temperature saves approximately 2% in running costs. A heat pump paired with UFH achieves COP 3.0–3.5 (delivering heat at ~7–8p/kWh at current electricity prices), while the same pump running at radiator temperatures achieves only COP 2.0–2.5. The result: approximately 43% lower running costs than using a heat pump with conventional radiators. We design and install wet UFH systems for new builds, extensions, renovations, and retrofit applications using slim-profile systems as thin as 15mm.
Key Benefits
Benefits of Underfloor Heating
Perfect for Heat Pumps
UFH's 30–45°C flow temperatures match heat pump output for maximum efficiency. A heat pump with UFH achieves COP 3.0–3.5 vs COP 2.0–2.5 with radiators — around 43% lower running costs.
Even Heat Distribution
No cold spots or draughts. Gentle warmth rises evenly from the floor for consistent room temperatures without convection currents.
Free Up Wall Space
No radiators means complete freedom for furniture placement and interior design, especially valuable in open-plan spaces.
Retrofit Options Available
Slim-profile systems like Nu-Heat LoPro 10 and Uponor Minitec at just 15mm can be installed over existing floors during a renovation. Walkable within hours.
Long Lifespan
Wet UFH systems last the lifetime of the building — 35–50+ years. Once installed, there is virtually no maintenance required.
Mix with Radiators Upstairs
UFH downstairs and larger K2 radiators upstairs on the same heat pump circuit is very common and cost-effective. Both operate at the same low flow temperature.
Our Process
How It Works
Free Survey
We visit your property to assess your heating needs, measure heat loss, and discuss the best options for your home.
Design & Quote
We design a bespoke system, identify all eligible grants including the £7,500 BUS scheme, and provide a transparent fixed-price quote.
Installation
Our MCS certified engineers install your system cleanly and efficiently, typically within 2–4 days, with minimal disruption to your home.
Aftercare
Full system handover, MCS certification, warranty registration, BUS grant application completion, and ongoing support when you need it.
Underfloor Heating Costs
Wet underfloor heating costs vary depending on whether it is a new build, extension, or retrofit. New build and extension screed installations typically cost £85–£135 per m². Retrofit slim-profile overlay systems cost £100–£190 per m². A typical ground floor installation in a 3-bed semi (50–60m²) costs approximately £4,000–£7,000. When installed alongside a heat pump, the combined system delivers the best possible efficiency and comfort. We design every system using room-by-room heat loss calculations in accordance with BS EN 12831.
Trusted Partners
Brands We Install
Areas We Cover for Underfloor Heating
We install underfloor heating across Cornwall. Click your area for local information and a free quote.
Our Work
Recent Underfloor Heating Projects
Real installations by our team across Cornwall — challenge, solution, and outcome.
Common Questions
Frequently Asked Questions
01 Can you install underfloor heating in an existing house?
02 Can I install underfloor heating in just one room?
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