Underfloor heating: Even warmth, without a radiator in sight

Underfloor heating distributes warmth evenly across your floor, eliminating cold spots and freeing up wall space. It is particularly effective in well-insulated homes and pairs exceptionally well with heat pumps.

Why consider underfloor heating?

Radiators heat a room by warming the air around them, which rises and circulates. This creates temperature differences across the room, warm near the radiator, cooler further away. Underfloor heating warms the entire floor surface, so heat rises evenly and the room feels consistently comfortable at a lower temperature setting.

This is especially relevant if you are considering a heat pump. Heat pumps operate at lower flow temperatures than boilers, around 35 to 45°C compared to 60 to 75°C for a boiler, so they need emitters with a larger surface area to deliver enough warmth. Underfloor heating uses the entire floor, giving it a much larger surface area than radiators, which is why the two work so well together.

Types of underfloor heating

There are two main approaches, and the right one depends on your home's construction and heating system.

Type

Wet (water-based)

Dry (electric)

How it works

Warm water flows through pipes embedded in or beneath the floor

Electric heating elements or mats installed under the floor surface

Connected to

Your central heating system (boiler or heat pump)

The electrical supply

Running cost

Lower: uses your heating system

Higher: runs directly on electricity

Installation disruption

Higher: requires floor buildup or excavation

Lower: thin mats laid beneath flooring

Best suited for

Whole-house heating, especially with heat pumps

Individual rooms, bathrooms, or where floor buildup is limited

What to be aware of

Underfloor heating works best in well-insulated homes. If the floor, walls, or roof are losing heat quickly, the system has to work harder and the even warmth it is designed to provide becomes less noticeable.

Floor buildup is a practical consideration, particularly for wet systems in existing homes. The pipes, insulation layer, and screed or panel system add height to the floor, which can affect door clearances, stair levels, and thresholds. If you are already planning a renovation that involves replacing floors, that is the ideal time to install underfloor heating. The disruption and cost are significantly lower when the floors are coming up anyway.

Floor covering matters too. Stone, tile, and engineered wood work well because they conduct heat effectively. Thick carpet or underlay acts as insulation over the heating and reduces its performance.

How Furbnow approaches underfloor heating

We assess underfloor heating as part of the whole-house plan, considering it alongside insulation, heat pump suitability, and the practical constraints of your home. Our PAS2035-certified retrofit coordinators will tell you whether it is the right fit, which type makes sense, and how to sequence it alongside other improvements so the floor buildup is planned properly.

See if underfloor heating is right for your home

A Furbnow Home Energy Plan assesses whether underfloor heating makes sense for your home, considering your floors, your heating system, and how it fits alongside everything else.