A sensible UK budget for a straightforward, professionally installed underfloor heating system is about £60 to £120 per m² for electric heating and £90 to £190 per m² for a wet system.
Those figures are useful for early budgeting, not shopping. They are broad UK market ranges, they don't suit every property, and quotations vary. A small bathroom can carry a higher price per square metre than a large extension because fixed costs for controls, electrical work and floor preparation matter more than the area alone.
The best quote should also tell you what those rates include. Otherwise, two installers can appear to charge similar amounts while offering very different jobs.
What sets the installation price?
Five things drive most UK underfloor heating quotes:
- the system type and product
- the heated floor area
- whether the floor is new or already built
- the condition and construction of the subfloor
- the number of rooms, zones and controls
A 4 m² bathroom and a 20 m² living room aren't simply four times and 20 times the same small-room price. Small jobs carry proportionally more set-up cost. A large, regular room is usually more efficient, provided it can be heated as one straightforward zone.
Our broader underfloor heating costs guide covers running costs and wider system comparisons. This page focuses on installation costs and the detail you need before accepting a quote.
Electric mat costs
Electric mats have a heating cable fixed to a mesh. The installer rolls or cuts the mat to suit the room, provided the cable itself isn't cut, then covers it with the appropriate adhesive or levelling compound.
Current UK supplier and installer guides commonly place fully installed electric systems around £60 to £120 per m². Some published market rates sit lower when a straightforward room is supplied and fitted, so treat the top of the range as more realistic where floor preparation, a floor sensor, thermostat and electrical connection are needed.
A quote should specify:
- mat or loose cable, including any controls supplied by the manufacturer
- the heated area, not the whole room area
- insulation and fixing materials
- thermostat and floor sensor
- electrical connection or certificate
- testing, commissioning and demonstration
- floor covering or floor finish, if included
A thermostat makes the system work properly. It shouldn't be treated as a small optional extra unless you already have a suitable compatible control.
Loose cable installation costs
Loose cable is more flexible than a mat. An installer can route it around permanent fittings and work around an irregular room shape, but layout takes longer and mistakes are more costly.
Current UK cost guides often place a professionally fitted loose-cable system in roughly the £70 to £120 per m² bracket, including ordinary installation costs. The final price still depends on room shape, preparation and electrical work.
Loose cable can suit a bathroom with a bath, shower tray and vanity or a conservatory with several obstacles. A mat is faster where the heated area is regular. Compare the full layout, not just the cable price per metre.
Wet system costs
A wet, or hydronic, system circulates warm water through pipe loops. It normally needs a manifold, a heat source connection, a control centre, balancing and a robust floor build-up. Some systems also need a mixing valve or pump assembly.
Current UK market guides place wet systems broadly at £90 to £190 per m² installed. A regular new-build floor with straightforward pipe routes is often nearer the lower end. Retrofits, long pipe runs and complicated manifold locations cost more.
The pipe and manifold aren't the whole job. A meaningful installed price should cover design or heat-loss calculations, pipe installation, manifold assembly, controls, floor build-up, pressure testing, filling, balancing and commissioning.
The official NHBC guidance on underfloor heating stresses proper design, installation and commissioning. Ask for these to be named in the quotation rather than accepting “fit a wet system” as a complete description.
Low-profile retrofit costs
A low-profile system can reduce floor build-up compared with conventional wet pipework in screed. Panels, pre-grooved boards and thin screed systems use more specialist materials, so the material price can be higher even when the disruption is lower.
Current UK retrofit sources place complete low-profile installations at roughly £90 to £200 per m², with the upper end more likely when floor preparation, control changes and finish-floor work are substantial. The exact build-up depends on the product and existing floor.
A retrofit quote should tell you:
- the finished floor level increase, including boards, pipe, screed and finish where applicable
- whether doors, thresholds, skirting boards and kitchen plinths need alteration
- what floor preparation is included
- whether any pipework is routed beneath existing joists
- how the system connects to the boiler or heat pump
Our retrofitting underfloor heating guide explains the options for concrete and timber floors, including where structural assessment matters.
What a room-size budget looks like
Using the broad installed rates above gives a simple first pass:
| Heated floor area | Electric system | Wet system |
|---|---|---|
| 4 m² bathroom | £240 to £480 | £360 to £760 |
| 12 m² kitchen | £720 to £1,440 | £1,080 to £2,280 |
| 20 m² living room | £1,200 to £2,400 | £1,800 to £3,800 |
| 30 m² extension | £1,800 to £3,600 | £2,700 to £5,700 |
| 60 m² ground floor | £3,600 to £7,200 | £5,400 to £11,400 |
These are arithmetic examples, not quotations. They don't include major repairs, unusual routing or every floor finish. They also use the full room area for simplicity, while the heated area may be smaller because fixed baths, kitchen units and other fittings may be excluded.
For a small but difficult room, collect three tailored quotes rather than trying to adjust a per-square-metre rate by hand. Complex shapes and restricted access can cost more per square metre.
Labour, materials and floor preparation
Labour should be visible in the quote. Ask whether the price is supply only, supply and fit, or a complete installed project. The hourly rate matters less than who does the work and whether they test, commission and certify it.
Electric work needs a suitably qualified electrician. Wet work involves plumbing, heating and often electrical controls. A one-person quote may be suitable for a simple small project, while larger or integrated work may need several trades. Compare the people named in each quote, not just the daily rate.
Materials may include:
- the mat, cable or pipe
- insulation boards or backing panels
- fixing clips, tape or adhesives
- manifold, valves, pump and wiring centre for wet systems
- thermostat and floor sensor
- screed, levelling compound or tile adhesive
- temporary protection and floor finish where specified
Floor preparation is where surprises cluster. A dusty, damp, loose or uneven floor may need cleaning, repair, levelling or replacement. None of that is a standard “exclusion” to accept without discussing. Get the condition recorded and ask what happens if the floor is worse than expected.
Design and heat-loss work
Wet UFH should be designed around the room's heat loss, floor construction and intended heat source. Pipe spacing, circuit length and flow temperature affect performance. A generic layout based only on floor area may work in a new, well-insulated room, but it isn't proper design for every project.
A heat-loss survey or detailed design may be quoted separately. That's reasonable if it includes room-by-room information, heat-loss figures, a control plan and commissioning instructions. Our underfloor heating installation guide covers the practical installation sequence, including resistance testing and recording the reading.
Thermostats, sensors and zoning
A basic thermostat, programmable thermostat and app-controlled thermostat are not equivalent. A typical quote may include a room thermostat, but multiple rooms may need multiple thermostats, sensors and connection work.
For a wet system, also check whether the price includes:
- one manifold or a manifold for each separate circuit
- zone valves or control channels
- a wiring centre
- room sensors
- weather compensation or smart control
- setup and commissioning
We explain the choices in our smart thermostats guide. GOV.UK also advises using suitably qualified tradespeople for low-carbon heating. If the project includes a heat pump and you want to apply for government support, use the official MCS installer finder and check current scheme rules on GOV.UK.
Insulation
Insulation sits below the heating layer and limits downward heat loss. It is a performance item, not just a sheet of material added to the quote.
Ask for the insulation type, thickness and area. A thin reflective sheet is not a substitute for insulation boards where the design requires board support. In a retrofit, there may be a trade-off between available floor height and insulation depth.
For building work in England, the applicable energy-efficiency guidance is Approved Document L. Building Regulations apply across different circumstances and devolved territories have separate documents, so use a project surveyor or Building Control to confirm what applies to your home.
Floor finishes
UFH costs sometimes appear to include a floor finish when the quote actually means the floor is ready for tiling or flooring. That is a material difference.
Check whether the price includes:
- supplying and fitting the finish
- primer, adhesive, grout or trims
- removal of the old floor
- making good around thresholds
- skirting boards and door alterations
- protection until other trades finish
A compatible floor covering also matters to heat output and response. Our best flooring for underfloor heating guide explains the differences between tile, engineered timber, laminate, vinyl and carpet.
Testing and commissioning
Testing should happen before the system is hidden. For an electric system, the installer needs to carry out the manufacturer's electrical tests and record the resistance or continuity values. For wet pipework, pressure testing is a separate line item that must occur before screeding or covering the pipe.
The quote should say who tests what, when, and what record you receive. Ask for handover information covering the system layout, controls, operating instructions, filling fluid, test results and warranty documents.
NHBC's guidance highlights commissioning as essential. Skipping the handover record may not stop the floor being fitted, but it leaves you with less evidence if performance or warranty becomes an issue later.
Hidden extras to look for
Before accepting a price, check whether it excludes:
- survey, heat-loss and system design
- Building Regulations or electrical certification
- floor levelling, repair or damp treatment
- insulation above the existing floor
- manifold, pump, mixing valve or wiring centre
- thermostats, sensors and zoning
- screed, adhesive or levelling compound
- floor finish, adhesive, grout and trims
- door and skirting adjustments
- long-distance routes to the manifold
- boiler or heat-pump modifications
- asbestos assessment in older floors or adhesive
- waste removal, making good and VAT
A vague exclusion is a prompt for clarification, not necessarily a problem. Ask for the amount, assumption or allowance where possible.
Comparing quotations on the same basis
A fair comparison needs the same room, floor area, system specification and finish in every quote. Send each installer the same drawings and ask them to identify anything they believe is missing.
Use one column per quote and check every item. The underfloor heating quotation guide explains the document in more detail. Check:
- Is the quoted area the heated floor area or the room area?
- Is the quote for supply only or a complete installation?
- Which products are specified?
- Are insulation, controls, electrical work and floor build-up included?
- Is floor preparation included, and what condition does it assume?
- Is screed or levelling included, including curing requirements?
- Is the final floor finish included?
- Are waste removal, making good and door adjustments included?
- What testing, commissioning records and certificates will I receive?
- What warranties cover products and workmanship?
- Are VAT and heat-pump or boiler work included?
- How will changes to the subfloor or design affect the final price?
Our underfloor heating brands guide helps compare product support and warranties, but brand name alone doesn't tell you whether a quote is complete.
Before work starts
Get the final price, system design and responsibilities in writing. Check insurance, references, applicable certifications and product warranties. For a heat pump project, confirm installer certification and the current grant process before work starts.
A good quote gives you a system you can operate, test and maintain. The lowest number is only useful if the document describes the work you actually need.
Price sources and limits
The ranges reflect published current UK market information, including the Floor Heating Warehouse's 2025 UK cost breakdown, PriceYourJob's UK installation cost guide and Self-Build's UK retrofit cost guide. Suppliers define “supply and fit” differently, which is why the figures overlap and vary.
Quotations vary by property, specification, scale, access, floor condition, installer and region. Ask local installers to price your actual room from plans or a site survey. Treat every online range as a budgeting tool, not a guaranteed price.
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