Under Floor Heating.

Under floor heating is widely used in cooler parts of Europe, and is becoming an increasingly popular installation in the UK.

As the name suggests, it is a heating system that is installed under the floor. It provides invisible warmth that can completely eliminate the need for radiators, giving you more room in your home and more freedom with your interiors. It is a low maintenance, omnipresent part of your surroundings.

Radiator central heating systems primarily generate convection currents of hot air that rise to the ceiling, making the ceiling one of the warmest places.

Under floor heating creates a 50/50 mix of radiated and convection heat which is argued to provide a more comfortable temperature between floor and ceiling. It aims to create uniform heat dissemination so that there are no particularly hot or cold spots, and particularly it creates a comfortably warm floor on bare feet.

Under floor heating is usually installed at the time of building as fully insulated flooring requires some large disturbance to the room or rooms.

What costs are involved?

Installation companies argue that under floor heating is no more expensive than a comparable radiator system. It is also compared to the price if a good quality carpet, with a ballpark figure of £20 per square metre for supply and installation as one estimate. The overall figure naturally depends on many other factors, and it is also held by some that under floor heating is overall more expensive than radiator system installation.

Where to install it?

Under floor heating can still be installed under existing flooring, depending on the floor’s construction.

How Does It Work?

Warm water from the boiler is circulated along continuous lengths of reinforced polyethylene piping based on either Pex or Santoprene systems. Each room has its own pipe circuit that is connected to a manifold with water regulating valves, and each room can be controlled by an individual thermostat.

When the room reaches the pre-set temperature, the thermostat sends a signal to a valve on the manifold to close that room’s circuit. The manifolds distribute water to the pipes at a temperature between 35-60°C that heats the floor to around 18-29°C.

Under floor heat can be fueled by almost any source. Usually the fuel used is oil, gas or solid fuel from a conventional boiler. Condensing boilers are the best choice to be paired with this kind of heating as they work well as the lower temperatures required.

Alternatively, its low temperature operation means that under floor systems can also be powered by solar panels, an Aga cooker, a heat pump, or a heat recovery system. These can provide additional savings on your fuel costs when used in any combination to supplement the boiler output.


Strategically based in Bournemouth we offer a complete plumbing, heating service on the south coast, Dorset and Hampshire.

Emergency Service – We offer this service to domestic, industrial and commercial customers. Under normal operating conditions we can respond on the same day by calling our office on 01202 557 158



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