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What is underfloor heating?

Underfloor heating is a way of heating a home through strong and flexible tubing that is embedded in the floor. It is efficient and affordable, offering numerous advantages over radiators.

There are various types of underfloor heating systems available. The best underfloor heating solution for you will depend on a range of factors including your project type, your current heating system and energy source.

  • Suitable for most properties
  • Energy-efficient
  • Maximises space in the home
  • Luxurious feeling of warm floors
  • Flexible control through zoning areas of the home
What is underfloor heating?

How does underfloor heating work?

Underfloor heating essentially works by turning the floor area into a giant, efficient and invisible heat emitter. Heating tubes or cables are installed beneath the floor, which heat up, to warm the room from the ground up. Strong, flexible tubing is used for warm water underfloor heating systems, whilst cables are used in electric underfloor heating systems.

Because underfloor heating covers such a large surface area, it is able to use much lower water temperatures than radiators. This helps to improve efficiency – especially with a heat pump – and also better heats a room as there are no cold spots.

Underfloor Heating vs Radiators

Underfloor heating design

We design your system to suit your home so that your underfloor heating performs as expected.

Our design process takes into account room-by-room heat loss, optimised running efficiency, and other critical factors to ensure your system heats your home in a better way.

  • A designed underfloor system will be responsive and achieve the perfect temperature – not too hot or too cold.
  • Maximum efficiency can be achieved by optimising the system to produce the right amount of heat with minimal energy use.
  • Your installer will receive a detailed tube layout and electrical drawings, simplifying installation.
  • Each room can be set to a different temperature, giving you complete comfort.
  • Because we calculate the amount of tubing and materials required, any excess is kept to a minimum – reducing waste.
Underfloor heating design

The benefits of underfloor heating

There are a wide range of benefits to installing UFH in your home. From energy efficiency to a luxury feel, we take a look at the biggest advantages of heated floors.


Underfloor heating is extremely flexible. It can be installed in any property type. From new builds to renovations and extensions, there is a solution to suit! You can install UFH in one room or multiple rooms, and you can even have underfloor heating upstairs.
UFH flexibility

Warm, heated floor

One of the main benefits of underfloor heating systems is how they feel. Heat gently emits upwards from the floor, making cold floors feel warm underfoot. UFH systems produce an even warmth, eliminating cold spots and draughts common with radiators.
UFH benefits - Warm Heated floor

25% more efficient

Warm water underfloor heating uses far lower flow temperatures than a radiator system. By covering a larger surface area it is still able to heat the room effectively, using less energy in the process. For this reason, underfloor heating efficiency is around 25% more than radiators and up to 40% more efficient when paired with a heat pump!
UFH benefits - energy efficient

Space saving & discreet

Underfloor heating systems are ‘invisible’ as the tube is hidden beneath the floor. This eliminates the need for radiators, freeing up valuable wall space. UFH is ideal for open plan living, smaller homes, and rooms such as kitchens and bathrooms where space is at a premium.
UFH benefits - UFH is hidden

Safe & healthy

Underfloor heating has no exposed hot or sharp edges. This makes it a safe option for young children and the elderly. UFH is also great for allergy sufferers as it provides warmth free from draughts and dust movements that can aggravate certain conditions.
UFH benefits - UFH is safe

Kind to the environment

As a low temperature heating system, underfloor heating uses less energy than traditional high temperature systems like radiators. This can help you to reduce your carbon footprint – even more so when installed alongside a heat pump.
Reduce your carbon footprint

Underfloor heating options by project type

One of the main factors that can affect your choice of underfloor heating system is your project type.

The Ultimate Underfloor Heating Buyer’s Guide

Find out how to choose the right underfloor heating for your home.

Download free guide

The Ultimate Underfloor Heating Buyer’s Guide

Compare Underfloor Heating Systems

UFH system type Project suitability Running costs Installation costs Installation time
Warm water/wet underfloor heating Suitable for all types of project including new build, renovation and single areas Low long-term running costs Higher upfront cost than electric UFH but much cheaper to run Varies depending on project size and UFH system
Electric underfloor heating Recommended for smaller spaces, like a bathroom, due to running cost. Around 3x more than warm water underfloor heating Generally cheaper to install Install in a single room in just a few hours

Having lived with underfloor heating, I can’t see how anyone wouldn’t want to.

Ann and Wyndham Collins, Nu-Heat customers

Shearwaters at sunset

Underfloor heating specialists

Nu-Heat has been designing and supplying underfloor heating systems for more than 30 years. We are experts in our field.

Bespoke heating design

Our underfloor heating systems are designed and overseen by our experts, to meet the specific needs of your project.

Award-winning service

With our award-winning customer service and support, we ensure you get the best underfloor heating system for your project.

Lifetime tech support

We offer lifetime tech support on our underfloor heating systems, so you can rest easy knowing we are always on hand to help.

User-friendly guides

Our helpful guides and manuals cover everything from installation, set up and the running of our UFH systems.

Warranty protection

We offer comprehensive warranty protection with all of our UFH systems, with long warranty periods for added peace of mind.

Registered Installer Network

Our Registered Installer Network helps you to find local professionals with expertise in installing underfloor heating and renewable systems.

Specialists in renewables

Heat pumps are the perfect partner for underfloor heating systems, as UFH works at a lower temperature. Nu-Heat are experts at combining the two technologies.
Underfloor heating
80000 +
UFH systems supplied
Over 29 years experience
30 years’
heating experience
Heat pump installs
8000 +
renewable systems supplied

Can I use underfloor heating even if I am off the gas grid?

Yes, underfloor heating is extremely versatile meaning it can be used with a wide range of fuel types. You can pair your UFH with an air source heat pump or a ground source heat pump for a more environmentally-friendly solution. If this isn’t an option, you can also use UFH with oil, Liquid Petroleum Gas (LPG) and other off-grid fuel boilers.

Do I need to dig up my floor to install UFH?

No. If you are renovating, you don’t need to dig up your floors to install UFH!

There are various different systems and installation options, including low profile overlay solutions, like our LoPro® range. These are simply installed over existing solid or timber floors. Your choice of tiles or laminate can then be laid directly over the system.

How do I control my UFH system?

How you control your UFH depends on the type of system you have. Screed UFH is usually left on with a setback temperature. This helps the concrete slab to act as a thermal store, avoiding long heat up times and keeping running costs low. Retrofit UFH heats up and cools down quickly, so can be controlled more like a radiator system.

Find out more about controlling your underfloor heating system.

Can my underfloor heating system leak?

It’s incredibly unlikely that the system will leak.

Our Fastflo® heating tube is strong and durable, manufactured in line with the highest European Industry Standards. This is covered by a 50 year warranty with the first 10 years being insurance backed, covering complete cost of any remedial works and reinstatement in the very rare event of a manufacturing fault.

We also design systems so that the tube only ever connects at the manifold – there are no joins under the floor whatsoever – meaning there are no weak points where leaks can occur.

How much does underfloor heating cost, is it expensive?

This depends on the size of the property and the most suitable underfloor heating system for the project. Underfloor heating is around 25% more energy efficient than radiators – it can actually save money on your heating bills. For more information, including average prices per m², see how much underfloor heating costs to run.

What floor coverings can I have with underfloor heating?

Underfloor heating can be used under most floor coverings, including carpet, tiles, engineered wood, vinyl and laminate flooring. If you’re unsure check the suitability with your flooring supplier. Read more about the best floor coverings for UFH

How long does underfloor heating take to warm up?

Does underfloor heating warm rooms up faster than radiators? Retrofit underfloor heating that sits on top of the floor warms up very quickly, on par with a radiator system. UFH that is set within a screed can take longer to heat initially, but retains its heat for longer and is easily programmed to provide the right amount of heat exactly when needed.

How is underfloor heating installed?

Underfloor heating is usually installed by a plumber or a Nu-Heat Registered Installer, but some DIYers choose to fit most of the system themselves, with signoff from a qualified plumber and electrician, as our manuals are fully comprehensive. The specific installation steps vary depending on the system. Find out how to install UFH.

Is underfloor heating better than radiators, can I use both?

UFH can replace radiators completely, or work alongside them, depending on your type of property. New builds are ideal for installing underfloor heating throughout – it’s 25% more energy efficient than radiators. UFH can also be installed on all floors of your renovation property.

How many KW and what wattage do I need for underfloor heating?

Energy used depends on a range of factors, including the size of your home, insulation levels, and the type of underfloor heating system you install. We use state-of-the-art software to ensure your UFH is designed to be energy efficient.

Do I need to install additional insulation with underfloor heating?

As with any heating system, if the property is poorly insulated it will require more energy to keep it warm. We would always recommend improving insulation if this is possible, as this helps to create a more efficient system that keeps running costs low.

When retrofitting underfloor heating, it’s often not necessary to add insulation to a concrete slab as downward heat loss is minimal. If, however, you will be installing UFH over a suspended timber floor with a void beneath it, insulation is absolutely essential.

When designing your bespoke UFH system, we take into account your property’s construction, insulation and glazing levels to ensure the system will perform.

Our ultimate guide to UFH and insulation offers further information.

How long do underfloor heating parts and components last for?

Our UFH tubes come with a 50-year product warranty, with the first 10 years insurance backed to cover any remedial works. Underfloor heating manifolds have a 10-year warranty, while electrical and plumbing components have 2-year warranty.

Can I use my existing thermostat with underfloor heating?

If you’re adding underfloor heating to your existing central heating or radiator system, you will need a separate thermostat for UFH. However, our underfloor integrates with an existing system, or you can control your UFH and central heating together by fitting a radiator manifold. We offer a wide range of underfloor heating thermostats, from standard dials to smartphone-controlled wireless models.

Is underfloor heating safe and good for my health?

Underfloor heating is safer and healthier than radiators, as exposed hot surfaces are hidden and dust traps removed. They offer a controlled and comfortable heat source, helping to eliminate draughts and cold spots in your home.

Can underfloor heating be used with heat pumps?

Underfloor heating can be used successfully with heat pumps, due to them both working most efficiently at lower temperatures. We provide air source heat pumps and ground source heat pumps, which can be fully integrated into your underfloor heating system.

Want help finding the right underfloor heating solution?

We would love to speak with you to discuss your project. If you have a question about your existing Nu-Heat system, our technical support team are at hand.