How Much Does It Cost to Move a Radiator?

Updated July 2026 · Emergency Plumber Chelsea

Why nobody can give a fair price over the phone. Two radiator moves that sound identical can involve very different amounts of work. The plumber needs to see where the flow and return pipes come from now, what the floor is made of, how far the new position is, and what sits between the two: kitchen units, fitted carpet, parquet, tiles or a structural joist. That is why a sensible quote for moving a radiator follows a quick look at the room. What follows is what actually drives the price, so you can judge a quote and plan the rest of your renovation around it.

The distance and the route of the pipes. The biggest single factor is how far the pipes have to travel and how. A move of a metre or two along the same wall usually means extending the existing flow and return under the floor or along the skirting. Moving to the opposite wall means crossing the room, and crossing a room means lifting more floor. Surface-run pipework boxed in along the skirting avoids lifting floors but has to be neat, and many owners in period homes would rather not see it.

What the floor is made of. On a suspended timber floor, a plumber can lift a few boards, run new pipes between or through the joists and put the boards back. Notching or drilling joists has to follow limits on depth and position so the floor is not weakened, which is one reason an experienced plumber takes a little longer on older houses. A solid or concrete floor is a different job. Many mansion blocks and basement flats in Chelsea have concrete floors with the pipes either chased into the screed or run behind the skirting, and moving a radiator there can mean cutting a channel, running pipe down from the ceiling void, or accepting a boxed-in run. That usually costs more than the plumbing itself.

Draining down the system. The heating circuit has to be isolated or drained before the old pipes are cut. On some jobs only part of the system needs draining; on others, especially where there are no working isolation valves, the whole system has to come down. It then has to be refilled, every radiator bled, the pressure set on a sealed system and fresh inhibitor added to protect against corrosion. Our guides on how to drain a radiator and how to drain a central heating system explain what that involves.

Microbore, 15mm and old pipework. Many homes are plumbed with 15mm copper to each radiator. Some, particularly from the 1970s and 1980s, use thin microbore pipe from a manifold, which is quick to extend but easy to kink and prone to blocking with sludge. In older properties the plumber may find a mix of both, plus old compression joints that start to weep once they are disturbed. If the pipework you are extending is in poor condition, it is worth replacing that section rather than joining new pipe onto tired pipe.

Will the radiator still heat the room from its new place? Radiators are often under windows for a reason: they warm the coldest part of the room and counter the down-draught from the glass. A radiator moved to an inside wall may leave the room feeling cooler near the window, and a room with a bigger window or an extra external wall may need more output than the old radiator gave. Before moving one, check that the size is right for the new position. If it is not, moving it is a good moment to replace it with one that is.

Replace it at the same time? If the radiator is old, rusting at the bottom or partly cold even after bleeding, it can make sense to fit a new one in the new position rather than move the old one. Most of the labour is the pipework and the drain-down, which you pay for either way. Radiators often come in different widths and pipe centres, so a new radiator may need slightly different tails, which is simple to allow for while the system is drained. If a radiator has been cold at the bottom or in patches, our guide to one radiator not heating up covers the likely causes.

Valves and balancing afterwards. The moved radiator needs its valves refitted or replaced. A thermostatic radiator valve on the flow gives room-by-room control, and the lockshield on the return sets how much water the radiator receives. A radiator on a longer pipe run can end up starved or hogging the flow, so a good installer rebalances the system at the end. Our guides to thermostatic radiator valves and the lockshield valve explain both.

Making good is often the surprise. Lifting and relaying floorboards is part of the plumbing. Relaying fitted carpet, refinishing parquet, patching plaster, re-tiling or repainting the wall where the old radiator hung is often a separate trade, and people forget to budget for it. Bracket holes in the old position need filling, and the wall behind a long-standing radiator is usually a different colour from the rest of the room.

Plan it with the rest of the work. The cheapest time to move a radiator is while the floor is already up, the room is being decorated, or other heating work is being done that needs a drain-down anyway. Moving several radiators at once costs less per radiator than doing them one at a time on separate visits. Our guide on moving plumbing during a renovation covers how to sequence it with other trades.

Leasehold flats and listed buildings. In a mansion block flat, lifting floors can disturb sound insulation that the lease requires you to maintain, and cutting into a concrete floor or a structural wall may need the freeholder's consent. In a listed building, altering historic fabric such as original floors or panelling can need listed building consent even for a small plumbing job. Check before the floor comes up.

Can you move a radiator yourself? Some confident DIYers do, but a radiator move involves draining the system, cutting and jointing pipe under the floor, refilling, bleeding and pressurising, and any weak joint left under a floorboard will leak into the ceiling below. In a flat, that is your neighbour's ceiling. It is one of the jobs where a professional is usually worth it.

How we price a radiator move. Emergency Plumber Chelsea looks at the existing pipework, the floor and the new position, tells you whether the radiator will still be right for the room, and gives you a clear price before work starts, including whether a new radiator would be better value. There is no call-out fee on jobs over 3 hours. See our central heating service or call 020 3002 6667 for SW3, SW10, Knightsbridge, Sloane Square, South Kensington and Fulham.

Quick tips

• Find out what your floor is made of before you plan; a concrete floor changes the price more than the distance does.
• Move radiators while the floor is already up or the room is being redecorated.
• Check the radiator is the right size for its new position, especially if it is moving away from a window.
• Budget separately for relaying flooring, patching plaster and repainting.
• Ask for the system to be refilled with fresh inhibitor and rebalanced once the work is finished.

FAQs