Radiator Installation and Repair in Purley

Whether it is one radiator swapped for a taller one, a leaking valve, or heating added to a room that never had it, it is the same job done properly: sized correctly, fitted level, and the system rebalanced afterwards.

Covering about five miles from Purley, across the south London and Surrey border. Monday to Friday, 7am to 6pm. Saturday and Sunday, 8am to 5pm.

What is included

  • Radiator sized for the room, not just matched to the old one
  • Old radiator removed and taken away
  • New thermostatic valves fitted as standard
  • Pipework altered or extended where the position changes
  • System topped up, dosed with inhibitor and rebalanced
  • Leak repairs and valve replacements
  • Radiators removed and refitted for decorating

Common radiator problems and what causes them

Most radiator complaints come down to one of six things, and a couple of them you can sort out yourself in ten minutes.

  • Cold at the top, warm at the bottom. Trapped air. Bleed it with a radiator key and top the system pressure back up. No callout needed.
  • Cold at the bottom, warm at the top. Sludge sitting in the bottom of the radiator. That is a flush job, not a bleed job.
  • One radiator cold while the rest are hot. Usually a seized thermostatic valve pin. Often freed off in five minutes.
  • The radiators furthest from the boiler never get hot. The system needs balancing so the near radiators stop taking all the flow.
  • A slow drip from the valve. The valve gland or the olive. Not urgent, but it will stain the floor and corrode the valve if it is left.
  • The radiator is hot but the room is still cold. The radiator is undersized for the room, and swapping it for a taller or double panel unit is the fix.

What it costs

We give you a fixed price in writing once we have seen the job. These are the things that change the number, so you know what we will be looking at.

  • A straight swap in the same position is the cheapest job, and it is labour plus the radiator itself.
  • Moving a radiator to a different wall means altering pipework, so it costs more than a swap.
  • Adding a radiator to a room with no heating is priced after we have seen where the existing pipes run.
  • A valve replacement on its own is the smallest job on this page and priced accordingly.
  • Send us a photo of the radiator and the wall it is on and we can usually price it without coming out.

Ring 07947 909074 and we will give you a realistic range over the phone before anyone comes out.

How it works

  1. Tell us what you need

    A photo of the radiator and the wall it is on usually tells us enough to price it.

  2. Size and quote

    We check the radiator is right for the room before ordering anything.

  3. Fit

    Most single radiator jobs are a couple of hours. We drain only the section we need to.

  4. Rebalance

    The system gets rebalanced afterwards so the new radiator has not stolen the flow from another room.

Who is doing the work

Every radiator installation and repair job is carried out by a registered engineer working under the following.

  • Gas Safe RegisteredRegister number 915978

Where we cover

Radiator installation and repair we have done

Photo needed: New vertical radiator fitted in a hallway in Purley
Real work, real people. No stock.

Recent radiator installation and repair customers

★★★★★
Brilliant company - Steve and Charlie are knowledgeable, reliable, friendly and clean and tidy! Rare in most trades. Recommended to all my friends and family and will use again. Thanks for being amazing. Had major building work done and nothing was too much trouble, new boiler, new bathrooms, new water pipes.
Frances20101Google, August 2026
★★★★★
Had a rat problem at my elderly nans house & found the bath waste had a huge hole in it. Steve Came round at short notice , replaced it. Clean tidy great job at a very reasonable price
Jamie SpencerGoogle, August 2026
★★★★★
After being messed around by a different company, we were recommended Go Fix and we couldn't be happier with the work they have done. Friendly, clean and they turned up everyday on time which seems hard to come by these days.
BradGoogle, August 2026

Read more reviews

Common questions

Why is my radiator cold at the bottom?

Sludge collecting in the bottom of the radiator, almost always. Cold at the top instead usually means trapped air, which you can bleed yourself. Cold all over usually means a stuck valve or a balancing problem.

How much does it cost to replace a radiator?

A like-for-like swap in the same position is a fixed labour price plus the cost of the radiator, and we will tell you the figure over the phone. Moving it to a different wall means altering pipework, so that one is priced after we have looked. A photo of the radiator and the wall it is on is usually enough for us to quote from.

Can you add a radiator to a room that does not have one?

Usually yes. It depends on where the existing pipework runs and whether the boiler has the capacity for another radiator. We check both before quoting rather than fitting it and hoping.

Do you fit vertical and designer radiators?

Yes. Just be aware that a designer radiator often puts out less heat than the standard one it replaces, so we check the output against what the room needs before you buy it.

Can you take radiators off for decorating?

Yes, we remove and refit them. It is a small job and worth booking both visits at the same time.

My radiator valve is leaking, is that urgent?

Turn the valve off if you can and put something under it. A slow weep is not an emergency but it will stain the floor and corrode the valve further, so get it booked in rather than leaving it.

Ask about radiators

Ring us for the quickest answer, or leave three details and we will call you back.

07947 909074 Get a quote