Water-Based Heating

The skirting board that heats your home.

ThermaSkirt H2O connects to your existing boiler or heat pump just like a radiator, but instead of a bulky metal box on the wall, your heating runs invisibly around the room at skirting board level.

85,000+Systems installedSince 2007
18+Years in real homesUK & 13 countries
Up to 20%Lower energy billsvs standard radiators
10 yrManufacturer warrantyWet system
Trustpilot
Rated Excellent
Made in Britain
Manchester manufactured
BSRIA tested
Independent UK test lab
120+ installers
UK-wide network
How it works

A radiator disguised as a skirting board.

ThermaSkirt H2O is an aluminium radiant heating panel disguised as a standard skirting profile. It replaces both your radiators and your existing skirting in a single 20mm-thick component, carrying hot water from your boiler or heat pump around the perimeter of every room.

It connects into your existing pipework just like a radiator, but instead of concentrating heat on one wall, it spreads warmth around the whole room. Virtually indistinguishable from ordinary skirting, it can be painted to match any décor, with matching unheated MDF profiles for cupboards and alcoves.

BoilerHeat Pumps
ThermaSkirt H2O cross-section profiles showing the 20mm aluminium extrusion with internal water channels

Two profiles, three styles, endless finishes.

At just 20mm (3/4") in depth, every ThermaSkirt H₂O profile looks like a traditional skirting board. Choose between our Standard and High Output profiles, then pick the finish that suits your home. Uncapped, traditional torus, or softer ovolo.

Deco BM2

Our most popular profile

Our slim-line profile, designed to disappear into modern interiors while still replacing every radiator in the room.

Download Deco BM2 technical data sheet (PDF)
Deco BM2 BM2 profile, Square Edge
BM2115mm / 4.5"

Square Edge

Uncapped finish
  • Simple, stylish square edge
  • Ideal for modern apartments
  • Our slimmest profile
Deco BM2 BM2TS profile, Torus Capping
BM2TS160mm / 6¼"

Torus Capping

Traditional finish
  • Classic torus moulding
  • Ideal for renovation & restoration
  • Also available in electric
Deco BM2 BM2OV profile, Ovolo Capping
BM2OV160mm / 6¼"

Ovolo Capping

Sealed, wipe-clean finish
  • Sealed, wipe-clean top capping
  • Softer profile for period interiors
  • Also available in electric

Deco BM3

Higher outputHeat pump ready

Taller profile with increased output. Designed for heat pumps, poorly insulated rooms and larger open spaces.

Download Deco BM3 technical data sheet (PDF)
Deco BM3 BM3 profile, Square Edge
BM3170mm / 7"

Square Edge

Uncapped finish
  • Clean, minimalist look
  • Suitable for poorly insulated rooms
  • Our tallest profile
Deco BM3 BM3TS profile, Torus Capping
BM3TS215mm / 8¼"

Torus Capping

Traditional finish
  • Classic torus moulding
  • Matches period properties
  • Also available in electric
Deco BM3 BM3OV profile, Ovolo Capping
BM3OV215mm / 8¼"

Ovolo Capping

Sealed, wipe-clean finish
  • Sealed, wipe-clean top capping
  • Softer profile for period interiors
  • Also available in electric
The science

Three core principles.

ThermaSkirt isn't a smaller radiator - it works on a different principle. The combination of radiant emission, perimeter coverage and BSRIA-tested even distribution is what lets it deliver underfloor-heating-like comfort at boiler-friendly and heat-pump-friendly flow temperatures.

Principle 1

Radiant, not convection.

Conventional radiators rely on hot air rising. Drop the flow temperature and that effect collapses, and output falls roughly 70% from dT50 to dT20. ThermaSkirt has no fins to convect; it radiates outward across the room and only loses around 52% over the same drop.

FLIR thermal image of a room with ThermaSkirt glowing warm along the floor-level perimeter at 27.7°C
Principle 2

The thermal envelope.

Heat is emitted at the external perimeter, exactly where the room loses it. The whole space becomes one thermal envelope, with comfort that's largely independent of where you put the sofa, the bed or the wardrobes.

Thermal-imaging map of a ThermaSkirt-heated room showing an even temperature of around 20°C across the whole space
Principle 3

Fast to react, on any floor.

Low water volume means ThermaSkirt warms up and cools down in minutes, not hours. And unlike underfloor heating, performance doesn't change with what's laid on the floor above it: tile, wood, vinyl or carpet, the response is the same. You get the even-heat distribution of UFH without giving up the responsiveness of a radiator.

Heat pump ready

At home with even a 35-45°C flow.

Heat pumps work best at 35-45°C. Standard radiators lose around 70% of their output at those temperatures, which is why heat pump retrofits so often end up with oversized radiators or very often more than one. ThermaSkirt uses the whole room perimeter as its heating surface, retaining nearly 50% of output at dT20 (vs ~30% for radiators) and delivering the warmth you need without taking over your walls.

Low water content

Roughly half a litre of water per five metres of profile.

ThermaSkirt holds approximately 0.5 litres of water per 5 metres of profile, a fraction of a panel radiator. That drastically reduces the thermal mass the boiler or heat pump is heating on each cycle, shortening start-up times and improving cycle efficiency on low-flow-temperature heat sources. Because the system is aluminium, BS 7593 chemical dosing (Fernox F1, Sentinel X100 or equivalent) at pH 6.8-8.3 is required to maintain the manufacturer's warranty.

In real homes

See it in place.

ThermaSkirt H₂O installed in homes across the UK: kitchens, living rooms, bedrooms, open-plan spaces. Tap any image to see the full view.

Explore by room
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How it compares

ThermaSkirt H2O vs radiators vs underfloor heating.

All three are wet systems that connect to your boiler or heat pump, but the experience of living with them (and installing them) is very different. Here's how they stack up on the things most homeowners care about.

FeatureThermaSkirt H2OStandard RadiatorsWet Underfloor Heating
Wall space & furnitureFrees 100% of wall space. Sofas, beds, wardrobes flush against the wall.Dictates room layout. Cannot block with heavy furniture.Frees 100% of wall space. Hidden under the floor.
Installation disruptionMinimal. Fits like a skirting board in 1–2 days per room.Minimal. Swap on existing pipework in a day.Very high. Requires lifting floors, pouring screed or raising floor levels.
Retrofit costLow to medium. Plumbs into existing 15mm or 10mm pipework.Lowest upfront cost for a like-for-like swap.Very high. Deep secondary costs (floor removal, screed, doors).
Heat pump compatibility (35–45°C)Excellent. Retains ~48% output at dT20, so no oversized emitters needed.Poor. Requires massive oversized double/triple panels.Excellent. The most common pairing for heat pumps in new builds.
Response timeGood. Heats up in 10–15 minutes on a standard gas boiler circuit.Good. Heats up in 10–15 minutes on a standard gas boiler circuit.Slow. 1–3 hours to heat the thermal mass of the floor.
Floor coveringsNo restrictions. Thick carpets, solid wood, rugs all fine.No restrictions.Restricted. Thick carpets (>1.5 Tog) act as insulators, blocking heat.
Dust & hygieneRadiates clean heat. Wipes clean with a cloth.Traps dust and pet hair inside deep metal fins.Sealed under the floor. No dust accumulation.
Installation

From first sketch to finished room.

ThermaSkirt fits like a skirting board and connects like a radiator. Most rooms are finished in a day, and a whole house usually takes under a week.

  1. 01

    Free design

    Upload a sketch, get a heat-loss calc and room-by-room quote.

  2. 02

    Delivered to your door

    Pre-cut lengths, made in Manchester from 75% recycled aluminium.

  3. 03

    1–2 days per room

    Connects to your existing flow and return pipes. No floor lifting.

  4. 04

    Fit & forget

    Horizontal pipework doesn’t collect air. 10-year warranty.

Frequently Asked Questions

Everything you need to know

Can ThermaSkirt H2O replace my existing radiators?
Yes. ThermaSkirt connects into your existing central heating pipework in the same way as a radiator. Your plumber (or you, if you DIY) removes the old radiators and connects ThermaSkirt to the same flow and return pipes.
Will it work with my heat pump?
Yes. It's built for low-temperature systems. The large surface area means it keeps around 48% of its output at dT20, nearly double what a typical radiator manages, so you don’t need oversized panels on your walls.
Does it work with Hive, Nest, Tado and other smart thermostats?
Yes. Because ThermaSkirt behaves like a radiator from the control side, it works with every major smart thermostat including Hive, Nest, Tado and Drayton Wiser, as well as standard programmers. Each length comes with a small on-board TRV for room-by-room control, and you can swap those for smart TRVs if you want app-based zoning of individual rooms.
How much does ThermaSkirt cost?
A typical room works out at £500 to £1,000 depending on size and heat demand, which puts ThermaSkirt in a similar bracket to mid-to-high-end designer radiators. The quickest way to get an accurate number for your home is to upload a floorplan or sketch via our quote form. We’ll come back with a room-by-room breakdown, heat loss calculation and a firm price, all free and with no obligation.
What colours is it available in?
ThermaSkirt comes pre-finished in a tough double epoxy powder coat. Standard colours are Cricket White (RAL 9010) and Vintage Ivory (RAL 1013). Carbon Black (RAL 9011) and Anthracite Grey (RAL 7016) are available to order, and any other RAL colour can be matched for a surcharge. It can also be repainted with standard radiator paint if you redecorate.
How long does installation take?
A typical room can be completed in half a day by a qualified installer, or a day by most DIYers. A full house install usually takes 2 to 3 days depending on the number of rooms.
Does it work with my microbore pipework?
Yes. ThermaSkirt connects to 10mm, 15mm or 16mm pipe. On microbore (10mm) the limit is around 15m per feed, which covers most rooms comfortably.
Is it safe for children and pets?
Yes. ThermaSkirt runs at the same flow temperatures as a standard radiator, so the surface gets warm but without the large, scalding-hot panel you get with a conventional radiator, and on a heat pump running at 35 to 45°C the surface is barely more than pleasantly warm. Because it sits at floor level rather than sticking out from the wall, it also removes the sharp corners and edges that make radiators a hazard. RoSPA data shows radiators are responsible for the majority of impact injuries in under-5s and over-65s, and ThermaSkirt eliminates that risk. It’s routinely specified in schools, care homes and hospitals.
Does it need bleeding or ongoing maintenance?
No. Because ThermaSkirt’s pipework runs horizontally (like underfloor heating), air doesn’t collect in it the way it does in vertical radiators. A bleed point is included at the end of each run for commissioning, and after that there's nothing to do.
Can I put furniture in front of it?
Yes. Unlike radiators, ThermaSkirt is designed to have furniture placed directly against it. Sofas, beds and wardrobes can sit flush against the wall. Radiant heat still creates an even thermal envelope regardless of furniture position.
Do I have to do the whole house in one go?
No. Many homeowners start with one room, or phase the installation room-by-room. ThermaSkirt coexists with existing radiators and towel rails on the same system.
Is there anything special about the water in the system?
ThermaSkirt uses aluminium, so the central heating water must be correctly inhibited and kept at a pH between 6.8 and 8.3, which is the same range recommended for most modern boiler systems. Base-exchanged softened water isn’t suitable. Your installer will handle this as part of normal commissioning, and we supply full guidance.

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