The two types cost very different amounts
There are two kinds of underfloor heating and they are not really comparable on price. Electric (dry) systems use heating mats or cables under the floor and are usually cheaper to install, which makes them popular for a single room like a bathroom or kitchen. Wet (hydronic) systems run warm water through pipes buried in the floor, connected to your boiler or heat source. Wet systems cost more to install but are far cheaper to run over a whole house, which is why they suit larger areas and whole-home projects.
So the first question that shapes any quote is simply: electric or wet, and how big an area.
New build versus retrofit is the biggest swing
Fitting underfloor heating into a floor that is already being built or dug up is straightforward and relatively economical. Retrofitting it into an existing home is where costs climb, because the floor usually has to come up, insulation may need adding, and floor levels can change enough to affect doors and skirting.
This is why the same size of room can vary so widely between two houses. A quote is not just about the heating; it is about the state of the floor it is going into.
What else moves the price
Floor area is the obvious driver. Beyond that: the floor construction (solid concrete versus suspended timber), the amount of insulation needed underneath to make the system efficient, the flooring going back on top, the controls and zoning you want, and how the system ties into your existing heating. Every one of those is a real variable, which is why an honest installer measures and looks before quoting rather than guessing from a phone call.
Running costs, and getting a real number
On running cost, a well-insulated wet underfloor system running at a low temperature is efficient and comfortable, spreading gentle warmth across the whole floor. A poorly insulated floor undoes a lot of that, which is why insulation matters as much as the heating itself.
The only figure worth trusting for your home is a fixed quote based on your actual floor, not an internet average. LMB covers Bridgend, the Vale and South Wales. Tell Lloyd the room, the floor type and what you are trying to achieve, and you will get a straight answer on whether it makes sense and what it involves before any numbers are promised.
