Underfloor Heating Buying Guide

We know that sometimes you need help when buying a new heating system. We also know the typical questions people ask when they are thinking about getting underfloor heating, so we have put together this buying guide to help you.

Whether you are looking to get a whole-house heating system or heat a single room, our guide tells you how underfloor heating works and how the system can help you to stay warm when it gets chilly.

How Does Underfloor Heating Work?

Underfloor heating works by producing radiant heat which is evenly distributed from the floor and warms the room from the ground up. Unlike radiators, which heat using convection where the air is circulated and heated by high local temperature.
With radiant heat, comfort tends to be felt sooner and at a lower temperature. There is minimal air flow, keeping the temperature comfortable and even, everywhere in the room.
underfloor heating vs radiators

Electric and Water Based Systems

There are two types of systems available: electric and warm water based underfloor heating. The former utilises electricity to heat a very thin wire, and the latter uses warm water which circulates through the heating pipe.
The suitability of each system depends on your project and preference. The electric system may be better for small areas such as bathrooms and renovations as it does not raise floor levels. Wet systems are ideal for larger areas or new-builds as they are fitted into the structural sub-floor.

Will Underfloor Heating Heat My Room?

Electric underfloor heating comes in different heat outputs, with a higher wattage available in order to provide enough heat for high heat loss areas such as conservatories.

Wet underfloor heating systems usually generate 40°C to 65°C degree temperatures, and the actual floor temperature will be on average 23°C to 32°C degrees, meaning that for a high heat loss area, the temperature can be adjusted to provide a sufficient level of comfort.

The heat output of an underfloor heating system needs to be greater than the heat loss of the room or area it is heating in order for the system to provide enough heat. So it is important to conduct a heat loss calculation to ensure that the system is suitable. This can be conducted by an architect or a heating engineer and will help you to choose the correct heat output for the underfloor heating system. If you are unsure of the heat loss, contact us and we will help you to choose the correct system.

It is also advisable to install the system with sufficient insulation, such as insulation boards, which reduce the heat-up time by pushing the heat to the floor level and preventing heat loss to the sub-floor.

floor types temperature heat output underfloor heating

Costs Associated with the System

There are a variety of systems available and the underfloor heating costs depend on the running time, heat output, the size of the heated area and the system type. You will also need a thermostat to control the system which is sold separately to the heating system. To find out the cost of purchasing a system, get a quote and we will come back to you with a detailed quote to meet your requirements.

The running costs are linked to energy prices, room size and height, and running time. Using a smart thermostat, such as the Warmup 4iE Smart WiFi Thermostat can save you money. The 4iE can save up to £200 on energy usage by suggesting smarter ways to heat your home. We can provide you accurate running cost information to better understand the underfloor heating costs. Simply fill in the details for an underfloor heating running cost calculation.

cost saving with warmup floor heating app

What to Look For?


Whether you are looking to get an electric or wet system, pay careful attention to the materials the underfloor heating wire or pipe has been made of.


Even though it is unlikely that you will experience problems with your system after it has been fitted to the floor, you should check that support is available if needed.


Even though underfloor heating is known for its reliability once the system has been installed, it is important to make sure your system is covered with appropriate guarantees and warranties.


The systems can be fitted by a competent DIY person, but you can also get a professional installer to fit the system for you. All electrical work, including wiring and connecting the thermostat to the heating system, needs to be completed by a part P certified/NICEIC electrician.
underfloor heating installation
install underfloor heating system
Looking for the right product?

Best Flooring for Floor Heating


Whether you’re renovating or choosing flooring for a new build, we outline in this article what you need to know about different flooring for underfloor heating.

Pros and Cons of Floor Heating

pros and cons ufh
Manual and programmable thermostats are still found in the market, but people are switching to a growing extent to smart thermostats that control the heating on behalf of you for their energy saving features and for their easy of use.

Best Thermostats

smartphone heating controllers

Warmup offers a wide range of underfloor heating controllers from simple manual thermostats to the latest, remotely accessible Smart thermostats.