Underfloor heating: costs, installation, and comparison of wet and electric systems

Key facts about underfloor heating in 2026

Before hiring a contractor, check these essential figures:

• Manifold installation: €331 – €497 / unit
• Screeding over heating pipes: €8.60 – €12.80 / lm
• Smart thermostat first-fix: €184 – €276 / unit
• Circulation pump installation: €142 – €212 / unit
• Wet system lifespan: 50+ years
• Electric system lifespan: 30 – 50 years
• Return on investment: 8 – 12 years for wet systems

For VAT-registered firms, VAT at 23% should be added to these rates. For a full renovation involving UFH, it is cost-effective to bundle related heating works, such as system filling or expansion vessel installation, into a single package.

Wet vs. electric underfloor heating — which system to choose?

Choosing between a wet (hydronic) and electric system is the most critical step of your project. Each system has its merits, ideal applications, and limitations that will impact your costs and comfort for decades.

Wet underfloor heating — for whole houses or large areas

Wet UFH works by circulating warm water through plastic or multilayer pipes embedded in the floor screed. Water is heated by a condensing gas boiler, heat pump, or electric boiler and distributed via a UFH manifold to various room circuits.

Wet systems are ideal for areas over 30 m², new build homes, and major renovations. Running costs are 30% to 50% lower than electric systems because the water runs at lower temperatures (35 to 45 °C) and the thermal mass of the floor releases heat more slowly and evenly. Manifold installation costs €331 to €497, screeding over pipes is €8.60 to €12.80/lm, and pump installation is €142 to €212 per unit.

Electric underfloor heating — for bathrooms and secondary heating

Electric systems use heating mats or cables laid directly under the floor finish. Installation is significantly simpler, requiring no manifold or pump, and provides rapid heat-up times. Mat prices range from €35 to €80/m², with installation and connection to the electrical circuit adding another €25 to €50/m².

Electric heating is best suited for bathrooms, en-suites, and kitchens as secondary heating, or for small apartments where a complex wet system isn't viable. The downside is higher running costs — heating a whole flat all day could result in electric bills 40% to 60% higher than a wet system powered by a heat pump.

What makes up the cost of UFH in 2026?

The final price of underfloor heating depends on six main components, which vary based on system type, floor area, and component quality.

For wet systems, the core costs are pipework layout (screeding €8.60 to €12.80/lm), manifolds with valves and actuators (€331 to €497 per setup), and the circulator pump (€142 to €212 per unit). Material costs (pipes, insulation boards, perimeter strips) for a standard 20 m² room typically range from €350 to €600 for materials alone.

Full installations usually include associated tasks like smart thermostat first-fixing (€184 to €276 per unit), expansion vessel fitting (€70 to €105), and the final filling of the heating system (€52 to €78 for the complete task). Once the screed is set, the floor finish is laid — ceramic tiles or UFH-rated laminate work best for heat transfer.

Seasonal and regional variations

The best time to install UFH is between September and February, when trade demand for new installs can be lower, potentially saving you 5% to 15%. In London and the South East, prices are consistently 15% to 25% higher than in the North or rural areas — for large projects over €5,000, it may be worth hiring contractors from outside the capital.

When is underfloor heating worth the investment?

UFH isn't always the right choice. There are specific scenarios where the ROI is excellent, and others where traditional radiators are more practical.

When UFH is recommended

Wet UFH offers maximum value in new build homes, especially when paired with a heat pump or condensing boiler. The low flow temperature (35 to 40 °C) makes it ideal for low-energy and Passive House standards. In a well-insulated home, the investment typically pays for itself in 8 to 12 years through lower energy bills.

In renovations, it makes sense if floors are being replaced throughout, avoiding redundant excavation costs. Electric UFH is always worth considering for bathrooms — the luxury of warm tiles is far superior to a towel rail, and a €800 to €1,500 investment for a 6 m² bathroom is acceptable for most homeowners.

When to stick with radiators

In older high-rise flats or apartments with concrete floors, wet UFH is rarely worth it — the floor build-up can increase height by 8 to 12 cm, requiring door trimming and potentially structural surveys. For small areas under 30 m², the overheads for manifolds and pumps are disproportionate. Furthermore, in poorly insulated older properties, a low-temperature system may not combat heat loss efficiently; radiators running at 60 °C will provide better comfort.

Common UFH installation mistakes

Even in 2026, typical errors occur that only surface after the first heating season. The most frequent is poor circuit layout — if a pipe run exceeds 100 metres, it leads to uneven heating and cold spots. A professional designer ensures no loop exceeds 80 to 90 metres.

Skipping floor insulation is a critical failure — without UFH insulation boards, up to 30% of heat escapes into the subfloor or ground. The standard is 30mm insulation for upper floors and 60mm for ground floors.

Incorrect screeding causes floor cracking; the layer above the pipes must be at least 45mm thick and include expansion joints every 8 to 10 metres. Otherwise, thermal expansion will cause cracks that damage your tiles.

Finally, underestimating controls is a mistake — without quality thermostats and individual zone control, much of the efficiency is lost. A smart thermostat with weekly scheduling can save an additional 15% to 25% on heating costs.

Case Study: UFH in a New Build in Berkshire

To give you a real-world budget, let’s look at a recent wet UFH installation in a 120 m² new build detached house. The client opted for a full wet system connected to an air-source heat pump.

Manifold installation for three zones cost €1,250, screeding over 240 lm of pipework was €2,580, pump and expansion vessel fitting cost €520, smart thermostat first-fix for four rooms was €920, and system commissioning/filling was €75. Total labour: €5,345. Materials (pipes, insulation, screed mix) added a further €3,200.

The total investment was €8,545, or approximately €71/m². Combined with the heat pump, the client expects annual savings of €1,200 to €1,600 compared to a gas boiler with radiators, resulting in an 8-year payback period.

Choosing your UFH system

In 2026, underfloor heating remains one of the most efficient ways to heat new homes and high-quality renovations. When designed and installed correctly, it offers superior comfort and lower bills than traditional radiators.

Before hiring, request a detailed CAD pipe layout, including heat loss calculations for each room. Ensure your engineer uses certified materials (PE-Xa, PE-RT, or Multilayer pipes) and adheres to BS EN 1264 standards. Always ask for a written guarantee — typically 5 years for materials and 2 years for labour, though top-tier firms offer 10-year system warranties.

FAQ - Underfloor Heating Common Questions

How much does UFH cost in 2026?

A complete wet UFH system for a 120 m² house in 2026 averages €7,000 to €10,000 including materials, labour, and screed. For electric systems in smaller areas, prices range from €60 to €130/m².

Wet or electric — which is better?

For entire houses and larger areas, wet systems are better due to lower running costs. For bathrooms, toilets, and small refurbs, electric is more practical due to easier installation and fast response times.

How much is UFH manifold installation?

In 2026, UFH manifold installation costs €331 to €497 per unit. Large houses usually require 2 to 3 manifolds to manage different floor levels or zones.

What is the best flooring for UFH?

Ceramic tiles or natural stone are best as they have high thermal conductivity. If using laminate or vinyl, ensure it is UFH-certified. Solid wood blocks are generally not recommended as they expand and contract significantly with heat.

How long does installation take?

For a 120 m² house, installation takes 5 to 8 working days, covering pipe laying, manifold fitting, and screeding. Note that screed requires a curing period (usually 21 days) before the heating can be turned on.

What is the lifespan of UFH?

Wet UFH systems can last 50+ years; PE-Xa pipes are often rated for 100 years. Electric systems typically last 30 to 50 years, depending on the quality of the heating elements.

Can UFH replace radiators in an old flat?

Installing wet UFH in old concrete-floored flats is technically difficult and rarely cost-effective due to floor height issues. Electric UFH is a better supplement for bathroom floors in these cases.

Get a precise UFH quote for your project

These figures provide a benchmark for underfloor heating costs in 2026. However, your specific quote may vary by up to 30% based on location, contractor, and system complexity.

For an accurate budget, use the Numiq online calculator — select your heating tasks, enter your measurements, and receive a current market estimate including materials.