Best Electric Underfloor Heating Kits UK 2026: Six Picks Compared

Electric underfloor heating has quietly become one of the most achievable comfort upgrades in a UK home, a warm tiled bathroom floor on a January morning is something you notice every single day. The mats are thin enough to go under tile without raising the floor much, and a competent DIYer can lay one before a professional makes the final connection. The trouble is the listings all look the same, a roll of mesh and a thermostat box, and they tell you nothing about wattage, insulation, floor types or who is allowed to wire the thing up.

We work with home fittings all day at Loften, so this guide sticks to what genuinely matters. It explains the handful of decisions that decide whether an electric underfloor heating kit delights you or disappoints you, then compares six kits sold on Amazon UK right now, from a value 150W mat for under tiles to a premium ultra thin system with a lifetime warranty. No invented hands on testing, just the trade offs laid out plainly, plus the insulation, thermostat and electrical sign off points a real installer will raise.

Some links in this guide are affiliate links, so we may earn a commission if you buy, at no extra cost to you. It never changes what we recommend.

The things that actually matter

Ignore the brand colours for a moment and get these right first.

• Mat or loose cable, because they suit different rooms. A mat kit is heating wire already spaced and stuck to a mesh roll, you unroll it, cut the mesh (never the wire) to turn corners, and it covers a regular room quickly and evenly. Loose cable comes on a spool and you fix it in runs yourself, which is slower but bends around pedestals, curved walls and awkward bathroom layouts that a 50cm wide mat cannot follow neatly. For most straightforward rooms the mat is the sensible choice, keep loose cable for genuinely awkward shapes.
• 150W or 200W per square metre, because wattage should match the room, not your enthusiasm. A 150W per square metre system suits most bathrooms, kitchens and living spaces, it runs efficiently and costs less per session over longer heating periods. A 200W per square metre system heats up faster and is the right call in high heat loss rooms, conservatories especially, where losses can approach the output of a 150W mat and leave it struggling. Higher wattage is not "better heating", it is faster warm up and more headroom, and the thermostat still caps the floor temperature either way.
• Insulation boards, because they are the difference between 30 minutes and several hours of warm up. Laying the mat straight onto a concrete slab means heating the slab before the room feels anything. A layer of coated insulation board between the subfloor and the mat sends the heat up into the floor finish instead, cutting warm up dramatically and trimming running costs for the life of the system. Boards are cheap relative to the electricity they save, almost every manufacturer tells you to fit them, and skipping them is the single most common regret in this category.
• Coverage area and layout, because you heat the open floor, not the room dimensions. Kits are sold by square metre, and the mat must never run under baths, shower trays, toilets or kitchen units. Measure the genuinely open floor, subtract fixed items, then buy the size at or just under that figure, a mat can be trimmed around obstacles by cutting the mesh but the heating wire itself must never be cut. Buying oversized is the one mistake you cannot fix on the day.
• The thermostat and the electrical sign off, because this is a notifiable electrical job. Every kit needs a thermostat with a floor sensor, and the better ones offer programmable schedules or Wi-Fi control that genuinely help with running costs. Whoever lays the mat, the final connection to the mains must be made, tested and certified by a qualified electrician, electric underfloor heating is notifiable work under Part P of the Building Regulations in England and Wales, it must be RCD protected, and bathrooms are a special location with their own rules. Budget for the electrician from the start, it is not optional.

All six picks at a glance

Pick	Best for	Output options	Floor type
ProWarm sticky mat kit	The all round top pick	100W, 150W or 200W per m²	Tile and stone
Warmup StickyMat	Premium build and warranty	150W or 200W per m²	Tile and stone
Klima mat kit	Best value under tile	150W per m²	Tile and stone
Nassboards Premium Pro	Fast warm up rooms	150W or 200W per m²	Tile and stone
BeWarm mat kit	Laminate and wood floors	100W, 150W or 200W per m²	Tile, laminate or wood versions
Living Heat kit	Kit and thermostat choice	150W or 200W per m²	Tile, laminate or wood versions

Kits are sold in many sizes from under 1m² to 15m² and beyond, and prices move often, so check the current price of the size you need on the day.

Our six picks for 2026

1. ProWarm sticky mat kit

Top pick for most rooms. The ProWarm sticky mat is the kit we would point most people at first, a thin self adhesive mat from a specialist underfloor heating brand, sold in a wide spread of sizes and in 100W, 150W and 200W per square metre outputs. The heating wire is slim at around 2mm so the floor build up stays low, the adhesive mesh holds its position while you tile over it, the wire uses tough ETFE insulation without PVC coatings, and ProWarm offers cover that replaces the mat if you accidentally damage the cable during installation, which takes real anxiety out of a DIY lay. Considerations: it is a tile and stone system, so wood and laminate floors need a different approach, the thermostat varies by bundle so check what your kit includes, and like every kit here it needs an electrician for the final connection and certificate. Who should skip it: anyone heating a conservatory on a budget may prefer a dedicated 200W kit, and laminate floors are better served by BeWarm or Living Heat below. Check price on Amazon UK

2. Warmup StickyMat

Best premium system. The Warmup StickyMat is the category benchmark, an ultra thin mat from the best known name in underfloor heating, with heating wire around 1.8mm thick taped to a self adhesive glass fibre mesh in 150W and 200W per square metre versions. Warmup's build quality and reputation are the draw, the wire is about as thin as this technology gets so tile levels barely change, and the mat is backed by Warmup's lifetime warranty when installed correctly, the strongest cover in this list. Considerations: it usually costs more per square metre than the value brands, the thermostat is often sold separately so price the full system, and the warranty terms reward following Warmup's recommended fitting approach, so read them before you start. Who should skip it: a rental bathroom or a tight budget project gets most of the same result from Klima or ProWarm for less. Check price on Amazon UK

3. Klima mat kit

Best value under tile. The Klima 150W per square metre mat kit is the straightforward budget route to a warm tiled floor, sold in a long run of sizes from compact cloakroom mats up to 10m² and typically bundled with a thermostat so the box covers the whole system. The value is the story here, the mat lays and tiles over like the pricier brands, the mesh cuts to shape around obstacles in the usual way, and for a typical bathroom the total outlay is modest for how much daily comfort it adds. Considerations: it is a 150W system, so a conservatory or another high heat loss room will want more output, the bundled thermostats are functional rather than fancy, and the brand does not carry the long UK heritage of Warmup or ProWarm. Who should skip it: anyone who wants the reassurance of a big name warranty over the lowest price, or anyone heating a room that clearly needs 200W per square metre. Check price on Amazon UK

4. Nassboards Premium Pro

Best for fast warm up rooms. The Nassboards Premium Pro mat kit is a consistently popular Amazon UK seller that pairs well with the higher 200W per square metre output, a natural fit for conservatories, draughty kitchens and any room you want warm quickly rather than warm all day. The kits are commonly bundled with a thermostat, Nassboards also sells the coated insulation boards every system here benefits from, so you can build the full stack from one brand, and the 200W option gives real headroom where heat loss is high. Considerations: higher output draws more power while it runs, so it suits rooms heated in shorter bursts, and as with the other value brands the warranty is shorter than Warmup's. Who should skip it: a well insulated bathroom heated for long gentle periods is better matched to a 150W system, which costs less over those hours. Check price on Amazon UK

5. BeWarm mat kit

Best for laminate and wood floors. BeWarm is the pick when the floor is not tile, because alongside its standard sticky mats it sells dedicated underfloor heating kits for laminate, engineered wood and solid wood floors, an area most tile focused brands leave to a separate product line. The wood floor kits are designed to sit under floating floors without adhesive or levelling compound, which makes them one of the most DIY friendly routes in this list, the wire uses ETFE insulation without PVC coatings, outputs run from 100W to 200W per square metre, and the kits arrive with everything boxed together including clear instructions. Considerations: heat output through timber is gentler than through tile because wood insulates, so manage expectations in a cold room, laminate makers set a maximum floor surface temperature you must respect, and the final connection still needs an electrician like every other kit here. Who should skip it: under tile in a bathroom, the ProWarm, Warmup and Klima mats above are the more established route. Check price on Amazon UK

6. Living Heat kit

Best for kit and thermostat choice. Living Heat is a UK brand with an unusually broad Amazon storefront, covering sticky mats for tile, kits for laminate and wood floors, and a genuine choice of thermostats from a simple manual dial to colour touch screens and Wi-Fi models you can control from a phone. That range is the appeal, you can match the exact kit to the room and the exact thermostat to how you live, a Wi-Fi thermostat with proper scheduling genuinely helps running costs, and having every floor type under one brand keeps a multi room project consistent. Considerations: the number of combinations makes the listings harder to compare, so read the size and output of the exact bundle carefully, and the brand is smaller than Warmup or ProWarm if long heritage matters to you. Who should skip it: if you just need one simple bathroom mat, the more focused kits above are an easier decision. Check price on Amazon UK

Which one should you buy?

A tiled bathroom or kitchen floor? The ProWarm sticky mat is the all round pick, and the Warmup StickyMat is the premium version of the same idea with the strongest warranty. Both keep the floor build up minimal under tile.

Watching the budget? The Klima 150W kit gets a warm tiled floor for the least outlay here, usually with the thermostat in the box. Spend the savings on insulation boards, they matter more than the brand on the mat.

A conservatory or a cold, fast warm up room? Go 200W per square metre, the Nassboards Premium Pro is the popular route and pairs with the brand's own insulation boards.

Laminate or wood floors, or a whole house mix? BeWarm's dedicated wood floor kits are the DIY friendly answer, and Living Heat covers every floor type and thermostat style from one storefront.

What it costs to run, honestly

Electric underfloor heating is priced in watts, so the arithmetic is simple. A 3m² bathroom mat at 150W per square metre draws 450W flat out, so a full hour at maximum uses less than half a kilowatt hour, multiply that by your own electricity unit rate for a real figure, and in practice the thermostat cuts power once the floor reaches temperature. The honest caveats: electricity costs more per unit than gas, so all day heating of a large space adds up, and a slab with no insulation boards will quietly burn money warming concrete. As a warm bathroom floor on a schedule the running cost is modest, as the sole heating for a big poorly insulated room, budget carefully before committing.

Common mistakes to avoid

The most expensive mistake is buying a kit sized to the room dimensions rather than the open floor, the mat cannot go under the bath, the shower tray or fixed units, and it must never be cut short, so measure the genuinely heatable area first. Skipping insulation boards is the next regret, the system works without them but warms slowly and costs more every day it runs. People also cut the heating wire instead of the mesh when turning a corner, or skip testing the mat's resistance before, during and after tiling, which is how damage gets found while it can still be fixed. And a surprising number treat the wiring as a DIY job, when the final connection is notifiable electrical work that needs a qualified electrician to connect, test and certify, especially in a bathroom. Plan the layout, the boards and the electrician before the mat arrives and none of these will catch you out.

How this fits with your wider home

A warm floor is one part of getting the water and warmth in a house working properly. If you are renovating a bathroom anyway, our guide to the best electric showers UK covers the other big electrical upgrade that usually happens at the same time. In a hard water area, scale quietly shortens the life of everything that heats water, so our guide to the best water softeners UK is worth reading before you invest in more heating kit. And if the kitchen is next on the list, our guide to the best boiling water taps UK covers the worktop upgrade that pairs naturally with a warm tiled kitchen floor.

Frequently asked questions

Can I install electric underfloor heating myself? You can do more of it yourself than most electrical products, which is part of the appeal. A competent DIYer can prepare the floor, lay the insulation boards and roll out the mat following the instructions. What you cannot do is make the final electrical connection, that must be completed, tested and certified by a qualified electrician, because electric underfloor heating is notifiable work under Part P of the Building Regulations in England and Wales, needs RCD protection, and bathrooms have additional electrical rules of their own. Lay the mat yourself if you are confident, book the electrician regardless.

Should I choose 150W or 200W per square metre? Match the wattage to the room's heat loss. A 150W per square metre system suits most bathrooms, kitchens and living rooms, and runs efficiently over longer heating periods. A 200W per square metre system heats up faster and is the right choice for conservatories and other high heat loss spaces, where a 150W mat can struggle to get ahead of the losses. Higher wattage means faster warm up and more headroom rather than a hotter floor, because the thermostat limits the floor temperature either way.

Do I really need insulation boards under the mat? Strictly the system will work without them, but you will regret skipping them. Laid straight onto concrete, much of the heat soaks into the slab before the room feels anything, so warm up stretches from around half an hour to hours and every session costs more. A layer of coated insulation board directs the heat up into the floor finish instead. Boards are one of the cheapest parts of the whole project and they keep paying you back for the life of the system.

Can you put electric underfloor heating under laminate or wood floors? Yes, but use a kit designed for it rather than a tile mat. Brands like BeWarm and Living Heat sell dedicated underfloor heating kits for laminate, engineered wood and solid wood that sit under a floating floor without adhesive. Timber insulates more than tile, so the warmth comes through more gently, and laminate manufacturers set a maximum floor surface temperature that the thermostat's floor sensor must be set to respect. Check your specific flooring is approved for underfloor heating before you buy.

Is electric underfloor heating expensive to run? It depends entirely on the room and how you use it. The maths is simple: area times wattage gives the maximum draw, so a 3m² mat at 150W per square metre uses under half a kilowatt hour per full power hour, and the thermostat reduces that once the floor is up to temperature. As scheduled comfort heating in a bathroom, that is a modest cost. As the only heat source for a large, poorly insulated room running all day, it adds up, because electricity costs more per unit than gas. Insulation boards and a programmable thermostat are the two things that keep the bills sensible.

How long does an electric underfloor heating kit last? A properly installed mat under tile has no moving parts and should last for decades, which is why the established brands offer long warranties, Warmup backs the StickyMat with a lifetime warranty when installed correctly. Almost all failures trace back to installation damage, which is why you test the mat's resistance before, during and after laying the floor, and why ProWarm's cover for accidental cable damage during fitting is genuinely reassuring. The thermostat is the part most likely to need replacing within the system's life, and it swaps out easily.

An electric underfloor heating kit disappoints only when it is bought on price per square metre and nothing else. Match the wattage to the room, size the mat to the open floor, put insulation boards underneath, pick the right kit for tile or timber, and have the connection certified by an electrician. Get those right and any of the six kits here turns a cold floor into the small daily luxury you stop wanting to live without. Kits, sizes and stock on Amazon UK change often, so check the current price and the exact bundle contents on the day.

As an Amazon Associate we earn from qualifying purchases.