Water Underfloor Heating

As one of the UK's leading underfloor heating suppliers, Wunda designs and supplies the most efficient and responsive underfloor heating systems, for both new and older homes.

So what is water underfloor heating?

Wunda is one of the leading designers and suppliers of water-based Underfloor heating in the UK, supplying the most energy efficient heating systems currently available for new and older homes. A Wunda underfloor heating system turns your whole floor into a low temperature radiator.

The large surface area doesn’t require a high temperature to warm the room, therefore using less energy with a fast heat up time and comfortable heat. Wunda’s Rapid Response® underfloor heating systems are the modern solution to any home, and the combination of Rapid Response® with Wunda home heating controls, can save up to 50% on your home heating bills

Wunda’s Rapid Response® system

Wunda’s Rapid Response® heating boards suit almost any floor finish with fast heat up and cool down times, as well as the traditional Screed and joist systems.

Wundafloor heating boards being installed in a conservatory by tradesman

Wunda Rapid Response® Systems

Rapid Response® boards are easy to install by laying the panels on your existing floor.

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Other systems

Wunda offer a range of underfloor heating systems to suit all properties.



Produce hot ceilings and cold floors because heat rises up where it pools until it’s forced down by air circulation…

Underfloor heating


Comfortable heating rises up naturally from the floor, warming everyone & everything from your feet up.

Radiators vs Underfloor Heating comparison

Underfloor heating gives the same heat output as radiators while using much lower temperatures which means running costs are reduced, in the long run underfloor heating is cheaper than radiators as your whole floor becomes your heat source and since Wunda’s Rapid Response® heating system replaces your radiators you can free up space in your home and reduce the amount of drafts that radiators cause.

Running costs

Save money and the planet!

Along with the added benefit of a zoned system that only provides heat to where you want it, Underfloor heating runs at a much lower temperature than radiators. It only needs water at 35-45°C, saving you huge amounts on your utility bills.

Not sure which UFH system is right for your upcoming project, compare the differences below.

Screed Rapid Response® Joist
New builds
No need to dig up floors
Fast heat up time

Why choose a Wunda water underfloor heating system?

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For every project

A range of high performance systems, suitable for old and new properties that will work with any heat source.

An icon of a water droplet for leak proof inside an orange circle

Leak proof

No joins under the floor and 100% leak proof pipe.

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Quality at a low price

System costs are competitive with radiator systems.

Orange icon of a pound coin which shows our system is cheap to run

Cheap to run

Save money and the planet! Costs 30% less than radiators and 65% less than electric floor heating to run.

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Rapid heat up time

Wunda’s Rapid Response® heating system heats up and cools down in minutes.

Circle icon of a boiler showing our system is Compatible with all boilers

Compatible with all boilers

Compatible with any heat source, including future heat pumps.

Underfloor heating for every project

Whether you’re planning on a new build or renovation Wunda offers a modern solution to any build, from warm kitchen tiles to heated laminate flooring. 

Underfloor heating for different buildings

No matter what kind of building or renovation project you are doing; your choice of heating system should be a serious consideration. Especially with today’s energy problems. Wunda’s Water-based floor heating systems are the most efficient, controllable and comfortable heating systems available, getting maximum efficiency out of any heat source, boiler or heatpump.

Water Based Floor Heating For Different Buildings

Underfloor heating for different floor coverings

Underfloor heating works with most flooring types, some work better than others but all work very well! It’s always necessary to check with your flooring supplier for suitability and recommended installation techniques. Find out more about different floor finishes here.  

Floor Finishes with Underfloor HEating

a modern and simplistic kitchen with three stools at a breakfast bar

Underfloor heating for different rooms

Water-based Underfloor Heating is a great solution for all rooms in your home, as it offers luxury comfort while being the most efficient heating system and lowest running costs available. Perfect for reception rooms, bedrooms and bathrooms alike.

Underfloor Heating for different rooms

Your UFH Questions

We recommend having regular servicing to maintain an efficient system, when you have the boiler serviced for example to check inhibitor levels are still ok, no air locks in the system causing poor performance. With regular preventative maintenance, you will have no problems of breakdown

The Rapid Response® heating system is a water-based floor heating system that uses low-temperature warm water to heat rooms evenly and quickly. Input temperatures can be as low as 45°C, using half the energy required to heat a radiator at 70-90°C.

This combined with the on demand nature of The Rapid Response® heating system, allows users to only heat the rooms they’re using, and not have to leave the heating on all the time like old traditional screed systems which took days to heat and cool.


The responsive use and lower energy requirements to run the Rapid Response® heating system make it a low carbon solution that’s compatible with current heating technology like gas/oil boilers; as well as working efficiently with alternative fuels of the future like hydrogen boilers and air & ground source heat pumps.

Our experts are more than happy to offer FREE advice before, during and after your system has been installed – just call or email us. Rest assured though that all of our components carry long guarantees and are backed up with a £10M Product Liability insurance with AXA.

Not at all! Wunda’s floor heating systems have been developed with the confident DIYer in mind, being able to lay the pipe and panels, leaving final commissioning to the professionals. If you’re extending or renovating, even simpler would be to make use of the builders already on-site and get them to install it for you.

Floor heating and radiators happily work in conjunction with one another, to achieve this you will need to ‘T’ off from your boiler primaries, so one set of flow and return will go towards your radiators and the other to your floor heating system. Any competent plumber can easily do this work for you.

Electric has much higher running costs in comparison to water based systems making it suitable for smaller areas such as en suites but not for larger living areas and whole homes. For open plan kitchen and family areas, water based systems are more economic costing up to 65% less to run than electric.

Most floor finishes can be used with floor heating, Wunda developed Rapid Response®, high density boards to support heavier floor finishes such as marble and stone tiles. These boards are independently approved by leading tile adhesive manufacturers to be laid directly on top without the need for an intermediary layer that other, less dense, boards may require, this helps to reduce system cost, build up height and lower install time.

If you’re opting for a wood floor be sure to install a floor probe to protect the integrity of the wood from fluctuating temperatures and do check with your flooring supplier as some products such as Beech wood may not be compatible.

No, most users of floor heating install on the ground floor and combine the system with radiators upstairs – but you can install throughout the whole house if you wish.

Absolutely, water based floor heating runs at lower temperatures, normally 35°C – 55°C, which is about half of what radiators run at. Water based floor heating is future proof and can be run from any heat source including heat pumps.

Warm water is pumped from the heat source to the manifold. If the floor heating requires warm water, the thermostatic valve will open allowing heated water into the manifold. From the manifold, heated water is pumped around the floor heating pipes, returning to the manifold and then either released back to the boiler/heat source via the boiler return valve for re-heating or blended back into the floor loop via a one-way valve. When all rooms reach desired temperatures, the room thermostats will signal to the actuators and pump to shut down, this in turn stops heated water circulating through the floor.

Got a question or need some help?

Visit our support hub for FAQs, How-to videos or to contact one of our experts.

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