Underfloor Heating Installation in Hertfordshire

Electric UFH for a bathroom (5m²) starts from £450 ex VAT installed, including the heating mat, thermostat and wiring. Electric UFH for a kitchen (15m²) starts from £900 ex VAT. Wet (hydronic) UFH for a single room starts from £1,200 ex VAT. A wet UFH system for a full ground floor of a typical 3-bed house starts from £4,500 ex VAT. Prices exclude flooring and screed. A fixed written quote is agreed before work begins.

Wet UFH connected to a modern condensing boiler is very efficient — typically 15–25% cheaper to run than a conventional radiator system. This is because UFH operates at lower water temperatures (35–45°C versus 65–75°C for radiators), which allows the boiler to condense more efficiently. Electric UFH is more expensive to run per kWh than gas-heated wet systems but has a lower installation cost. For bathrooms used intermittently, electric UFH is usually the more cost-effective overall choice.

Wet UFH is better for: whole-house heating, new builds, extensions and rooms where the floor is being lifted anyway. It is more expensive to install but cheaper to run long-term. Electric UFH is better for: single rooms (especially bathrooms and kitchens), retrofits where lifting the floor is not practical, and properties without gas or where wet system installation is too disruptive. We will recommend the right type for your specific project at the design stage.

Yes — both types can be retrofitted. Electric UFH mats can be laid directly onto an existing floor (tiles are lifted and relaid over the mat) with minimal floor height increase. Wet UFH retrofit is more involved as it requires lifting the floor to lay insulation and pipes, then either a screed or overlay system is used. Low-profile overlay wet systems (approximately 15–25mm total floor build-up) are available for retrofit applications where floor height is a concern.

In most cases, yes. A standard gas condensing boiler can supply a wet UFH system — the boiler will run at a lower flow temperature than for radiators (around 40–50°C), which actually improves its efficiency. If your existing boiler has a minimum flow temperature above 55°C (some older models), a mixing valve can be fitted to reduce the temperature for the UFH circuit. We assess compatibility at the design stage.

Yes, with caveats. Engineered wood is suitable for UFH if: the total board thickness is 18mm or less; the manufacturer explicitly states UFH compatibility; the moisture content of the boards is stable; and the maximum floor surface temperature does not exceed 27°C (required by most engineered wood manufacturers). Solid hardwood is generally not recommended as it can cup and gap. We advise on specific floor products at the design stage.

Electric UFH in a single bathroom takes 1–2 days. Electric UFH in a kitchen or larger room takes 2–3 days. Wet UFH in a single room (including screed cure time) takes approximately 1 week. A full ground floor wet UFH system in a typical 3-bed house takes 5–10 working days for installation, then screed needs 3–7 days to cure before floor covering can be laid.

This depends on the floor finish and the insulation standard of the room. UFH under tiles or stone typically takes 45–90 minutes to reach operating temperature from cold. Under wood or LVT it may take 60–120 minutes. This is longer than radiators (which heat quickly), which is why UFH systems benefit from a programmable thermostat set to pre-heat the room before it is needed. UFH is most efficient when run at a lower, more constant temperature rather than frequently cycled on and off.

Yes — bathroom underfloor heating is one of our most popular projects. Electric UFH mats are ideal for bathrooms: thin, straightforward to install under tiles and inexpensive to run for the limited periods a bathroom is typically occupied. Wet UFH can also be used in bathrooms, particularly in larger family bathrooms where it is the primary heat source. For small or en-suite bathrooms, electric UFH is usually the most practical choice.

Electric UFH mats add approximately 3–5mm to floor height (absorbed by the tile adhesive bed in most cases). Wet UFH in a screed system typically adds 50–100mm to floor height (insulation + screed). Low-profile wet overlay systems suitable for retrofits add approximately 15–25mm. Floor height increase is an important consideration — we discuss this fully at the design stage, particularly for doorways and transitions to adjacent rooms.

Yes — UFH and heat pumps are an ideal combination. Air source and ground source heat pumps are most efficient when generating low-temperature hot water (35–45°C). UFH operates at exactly these temperatures, whereas radiators typically require 65–75°C (which makes heat pumps run less efficiently). If you are considering or already have a heat pump, wet UFH is strongly recommended as the heat emitter.

Yes. Wet UFH systems use a manifold with separate flow and return circuits per zone, each controlled by its own thermostat. This allows individual rooms to be set at different temperatures and heated independently. Electric UFH in each room has its own thermostat. Multi-zone systems can be integrated into smart home controls (Hive, Heatmiser, Nest) for app-based management.

Wet UFH pipes buried in screed have an expected lifespan of 50+ years — significantly longer than any other component in the system. Electric UFH mats and cables are typically guaranteed by the manufacturer for 25 years and have a practical lifespan of 20–30 years or more. Thermostats and manifold valves have shorter lifespans (10–15 years) but are accessible and relatively inexpensive to replace.

For a properly zoned system, yes — each room or zone has its own thermostat, which controls the actuator on the manifold. This is the recommended approach and meets Building Regulations requirements for zone control. A single thermostat controlling the whole system is possible but sacrifices individual room control and energy efficiency. Smart thermostats allow all zones to be managed from a single app.

We provide a 12-month workmanship guarantee on all underfloor heating installation work. The UFH pipe or mat carries the manufacturer's product guarantee (typically 10–25 years depending on the manufacturer and product). We carry out a pressure test on wet systems before any floor covering is laid, with documentation provided — this is critical for the manufacturer guarantee to be valid.