12V underfloor heating film for a motorhome
Updated: October 2026
You are in a cold camper on a leisure battery, and a house foil kit keeps appearing in the same search. A 12V underfloor heating film for a motorhome, in this set, is one listing: ASIN B07YN23JHC, for caravans, motorhomes, campers, boats, and similar vehicles. It is not a 230 V room kit, and the reviews do not agree on how warm the floor gets. The [electric underfloor heating foil comparison](/hub/heating/underfloor-heating-foil) holds the house mats beside it. If you buy through our links, a qualifying purchase can earn us a commission at no extra cost to you.
You are in a cold camper on a leisure battery, and a house foil kit keeps appearing in the same search.
You are in a cold camper on a leisure battery, and a house foil kit keeps appearing in the same search. A 12V underfloor heating film for a motorhome, in this set, is one listing: ASIN B07YN23JHC, for caravans, motorhomes, campers, boats, and similar vehicles. It is not a 230 V room kit, and the reviews do not agree on how warm the floor gets. The electric underfloor heating foil comparison holds the house mats beside it. If you buy through our links, a qualifying purchase can earn us a commission at no extra cost to you.
Our top picks
| Badge | Product | Supply | Stated power | Named finish | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Adept Adept dial-thermostat foil kit | 230 V class | 140 W/m² | Laminate, engineered wood | 9.6 | about £54.99 | View offer |
| Preis-Tipp |  Adept Adept 10 m² foil kit | 230 V class | 140 W/m², 10 m² | Laminate, engineered wood | 9.0 | about £164.99 | View offer |
| Alternative |  infrarot-fussboden-de 12 V film kit, 1 m | 12 V | 65 W, 130 W/m² | Floating, incl. carpet | 8.6 | about £109.00 | View offer |
What the listing is
The sheet is 100 cm by 50 cm and 0.04 cm thick, about 0.5 m², rated 130 W/m² and 65 W at 12 V, with a 12 V M3 thermostat in the box. The shelf price is £109, roughly £218 for each square metre of this small film. The thermostat is stated with off, eco, and comfort modes, an internal sensor, and an external sensor. The relay is stated up to 20 A and 240 W. Those are controller limits, not a measurement of your battery on a winter pitch. The plug-profile field reads Ceiling Mount. That is not a BS 1363 plug and not a 230 V connection. The amazon.co.uk line is 4.3 out of 5 from 66 reviews, the largest count in the set. For a 230 V house floor, use the underfloor heating foil buying guide.
What reviewers measured
Two UK reviews do not tell one temperature story, and this page does not average them. A review dated 8 February 2024 records a 0.5 m² kit lifting the floor from 6°C to 24°C over five hours, with the battery still showing 12.1 V. Another UK review records about 15 A at 12 V for an hour through 6 mm laminate, and a rise only from 13.5°C to 20°C. About 15 A is that reviewer’s current. The listing’s 65 W at 12 V is about 5.4 A if you divide those two stated figures, so the review is a higher draw than the nameplate sum. Neither report is a lab curve, and neither says the film heated the whole van.
Battery current
A draw of about 15 A is 15 amp-hours for each hour the film stays on. This set has no battery-size calculator, and the February review’s 12.1 V after five hours is one van on one day. The relay limit of 20 A and 240 W does not mean your leisure battery can hold 20 A all weekend. Use this film on a vehicle floor when you have budgeted the current. The house picks sit on the best electric foil underfloor heating page.
Language and faults
A UK review dated 14 October 2023 says the instructions were in German and the buyer could not connect the film. Mode names on the listing are not a wiring diagram. Read the paperwork before the film is stuck down. A review dated 27 November 2024 says the seller replaced a broken thermostat the next day. Section 9 of the Consumer Rights Act 2015 is the satisfactory-quality rule if goods arrive faulty. One replacement is not a failure rate.
Common questions
How many amps does it draw?
The listing states 65 W at 12 V on this size, which is about 5.4 A if you divide those two figures, and a relay up to 20 A and 240 W. A UK review records about 15 A at 12 V for an hour. That review is higher than the 65 W nameplate sum. Budget for the draw you measure, and treat 15 A as one reviewer’s figure rather than a second official rating. There is no battery calculator in this set.
Does it include a thermostat?
Yes. The listing includes a 12 V M3 thermostat with off, eco, and comfort modes, and both an internal and an external sensor. The relay is stated up to 20 A and 240 W. A November 2024 review says a broken thermostat was replaced by the seller the next day, so the controller can arrive faulty even though it is part of the kit. Check it before you rely on the modes.
Are the instructions in English?
Not in every box, on the evidence of this extract. A UK review dated 14 October 2023 says the instructions were in German and the buyer could not connect the film. If you need an English diagram, treat that as a real gap and confirm the paperwork before the film is stuck down. Mode names on the listing are not a wiring guide.
Can it go under carpet?
This listing names carpet, with other floating coverings, for the vehicles it is sold for. That is a statement about this 12 V film. Adept’s house kits in the same comparison name laminate or engineered wood and do not name carpet. Do not move the carpet line across to those mats. On this film, carpet is named. The reviews that give temperatures talk about the floor and, in one case, 6 mm laminate, not a thick carpet pile.
Can I connect it to 230 V?
The listing is 12 V. It does not describe a connection to a 230 V house circuit, and the Ceiling Mount plug-profile field is not a BS 1363 plug. Part P is a dwelling rule and is the wrong frame for this vehicle supply. If you need a 230 V mat for a house floor, use one of the Adept or Minco listings in the main comparison, not this film.
What if the thermostat arrives broken?
A UK review dated 27 November 2024 says the seller replaced a broken thermostat the next day. Section 9 of the Consumer Rights Act 2015 is the satisfactory-quality rule when goods are faulty. One next-day replacement is not a rate of failure for the 66 reviews. Contact the seller with the order details, and do not stick the film down until you know the controller powers up.
Related pages
Sources
Public UK sources and the amazon.co.uk listings in this comparison. Listings captured 15 October 2026. Page updated October 2026.
- Approved Document P, 2013 (retrieved 15 October 2026)
- Approved Document L, 2021 with 2023 amendments (retrieved 15 October 2026)
- Approved Document L, 2026 (retrieved 15 October 2026)
- Building Regulations 2010, regulation 12 (retrieved 15 October 2026)
- Consumer Rights Act 2015, section 9 (retrieved 15 October 2026)
- IET, BS 7671 (retrieved 15 October 2026)
- Warmup foil heater (retrieved 15 October 2026)
- amazon.co.uk listing extract, Adept 3 m² foil kit (retrieved 15 October 2026)