A straightforward like-for-like radiator replacement in London usually costs £180-£350 including labour. Replacing a radiator with small valve or pipework changes typically costs £300-£550. Moving a radiator or adding a new one often costs £350-£650 or more, and designer or vertical radiators can reach £900+ fitted.
These are indicative London prices for 2026. Your final quote depends on the radiator type, the state of your pipework, the valves, and how easy it is to get to the job. The sections below explain what drives each price, so you can judge a quote with confidence.
How Much Does Radiator Replacement Cost in London?
Replacing one radiator in London typically costs £180-£350 when the new radiator is the same size and the pipework stays where it is. This price usually covers the radiator, labour, draining, refilling and a heating test.
London prices run higher than the national average because of higher labour rates, parking and congestion charges, and tighter access in flats and terraced homes.
Average Cost to Replace One Radiator
For a standard single or double panel radiator, expect to pay around £180-£350. The cheaper end applies to a simple swap with matching connections. The upper end applies when the plumber also needs to fit new valves or adjust the pipes slightly.
Radiator Replacement Cost Including Labour
Labour is usually the larger share of a like-for-like replacement. A plumber will normally spend one to two hours on the job. The radiator itself might cost £50-£150 for a standard panel model, with labour, materials and disposal making up the rest.
When you compare quotes, check whether the price is “supply and fit” or “fit only”. A fit-only price looks cheaper but doesn’t include the radiator.
Cost to Replace Multiple Radiators
Replacing several radiators in one visit costs less per radiator than doing them one at a time. The plumber drains and refills the system once, travels once, and sets up once.
Typical London Radiator Prices at a Glance
| Job | Typical London Cost |
|---|---|
| Like-for-like radiator replacement | £180-£350+ |
| Replacement with minor pipework or valve changes | £300-£550+ |
| Moving a radiator | £350-£650+ |
| Adding a new radiator | £350-£650+ |
| Designer, vertical or column radiator | £350-£900+ |
These are guide prices, not fixed quotes. A site visit or clear photos are the only way to price your job accurately.
Want an exact figure? Send us your radiator details and we’ll price your job.
How Much Does Radiator Installation Cost in London?
Installing a brand-new radiator costs more than replacing an existing one, usually £350-£650 or more in London. The extra cost comes from creating a new position for the radiator, which often means running new pipes.
Replacement and installation are different jobs. Replacement swaps one radiator for another in the same spot. Installation adds a radiator where none existed before.
Installing a Radiator on Existing Pipework
If there are already suitable pipes nearby, for example from a removed radiator, the job is much simpler. Expect a price close to the replacement range, with a small extra charge for new valves and brackets.
Installing a New Radiator With New Pipework
New pipe runs are the biggest cost jump. The plumber has to run copper or plastic pipe from the nearest heating pipe to the new position. This may mean lifting floorboards, chasing walls or working through ceilings. Some published price guides put a central heating radiator with no existing pipework at £900 or more before pipework costs, so always confirm exactly what is included.
Supply and Fit Radiator Cost
Supply and fit means the installer buys the radiator and fits it for one price. This is usually the simplest option for homeowners. It also means the installer takes responsibility if the radiator is the wrong size or output for the room.
Radiator Replacement Cost by Radiator Type
The radiator you choose changes the total more than almost anything else. Standard panel radiators are cheapest. Designer, vertical and cast iron models cost more to buy and more to fit.
| Radiator type | Typical fitted cost (London) | Notes |
|---|---|---|
| Single panel (Type 11) | £180-£300 | Slim, suits small rooms and hallways |
| Double panel (Type 22) | £220-£400 | More heat from the same width |
| Vertical radiator | £350-£800 | Good for narrow walls, higher price |
| Column radiator | £400-£900 | Traditional look, heavier to fit |
| Designer radiator | £400-£900+ | Price depends heavily on the product |
| Heated towel rail | £250-£600 | Bathroom use, may need extra pipework |
| Cast iron radiator | £500-£1,000+ | Very heavy, may need reinforced fixings |
Single panel radiators are the budget choice. They take up little space but give out less heat.
Double panel radiators have two water-filled panels and usually two layers of fins. They give out more heat from the same wall width, which is why they’re so common in living rooms.
Vertical and column radiators are chosen as much for looks as heat. They can cost more to fit because of their weight, mounting points and pipe positions.
Heated towel rails are often used in bathrooms. If they replace a standard radiator, the pipe positions may not match, which can add to the cost.
What Affects the Cost of Radiator Installation in London?
The main cost factors are radiator size, existing pipework, valves, whether the radiator is moving, access, and how many radiators you’re replacing. Each of these can move a quote by £50 to several hundred pounds.
Radiator Size and Heat Output
A radiator must give out enough heat for its room. Heat output is measured in BTU (British thermal units) or watts. A bigger room, poor insulation or large windows need a higher output.
Replacing a radiator with a physically smaller or lower-output one can leave a room cold. A good installer will check the output of the old radiator and recommend a suitable match rather than only matching the size.
Existing Pipework
If your existing pipes are in good condition and the connections line up, the job is quick. If the new radiator has different pipe centres, the plumber may need to alter or replace short sections of pipe, which adds time and materials.
Radiator Valves
Valves control the flow of hot water. Many replacement jobs include new valves, because old ones can seize or leak once disturbed. A thermostatic radiator valve (TRV) lets you set the temperature room by room and can help with heating efficiency. Expect valves to add roughly £20-£60 per radiator, depending on the type.
Moving the Radiator
Relocating a radiator means extending or rerouting pipework. See the next section for details.
Access and Property Type
Flats on upper floors, tight terraced houses and properties with limited parking can add time. Floor coverings, fitted furniture and tiled walls can also slow the work.
Draining and Balancing the Central Heating System
In many homes, the plumber needs to drain part or all of the central heating system to take a radiator off. If isolation valves are already fitted on both sides of the radiator, they can often drain just that radiator.
Afterwards, the system is refilled and checked for leaks. Larger jobs may also need balancing, which adjusts the lockshield valves so every radiator heats evenly.
Number of Radiators Being Replaced
More radiators means a lower cost per radiator, because setup, draining and refilling are shared across the whole job.
How Much Does It Cost to Move a Radiator in London?
Moving a radiator in London typically costs £350-£650 or more. The price depends on how far it moves and how hard it is to reach the pipework.
Here is what the work usually involves:
- Draining the system, or the relevant section of it
- Removing the existing radiator and brackets
- Extending or rerouting the pipework to the new position
- Fitting new brackets and the radiator
- Setting the valve position and connecting the pipes
- Refilling the system and checking for leaks
- Bleeding the radiator and balancing the system
A short move along the same wall costs less than moving a radiator to a different room. If the pipes run under floorboards, the job is usually easier than if they’re buried in a solid floor or concrete.
How Much Does It Cost to Install Multiple Radiators?
Replacing several radiators at once reduces the cost per radiator. The figures below are indicative guides for standard panel radiators with existing pipework in good condition.
| Scenario | Indicative London Cost | Typical Time |
|---|---|---|
| 2 radiators | £350-£650 | Half a day |
| 4 radiators | £700-£1,300 | 1 day |
| 5 radiators | £850-£1,600 | 1 to 1.5 days |
| 6-8 radiators | £1,200-£2,600 | 1.5 to 2 days |
| Whole-house replacement | £2,000-£4,500+ | 2 to 4 days |
Example: A 3-bedroom terraced house in south London has five old double panel radiators. The pipework is in good condition and the radiators are being swapped like for like. Because the system is drained once and the plumber works through the house in a single visit, the total comes in lower than five separate call-outs would.
The final figure depends on radiator type, valves and whether any pipework needs changing.
Radiator Replacement vs Repair: Which Do You Need?
Repair is enough when the problem is minor, such as a stuck valve, trapped air or a small leak at a joint. Replace the radiator when it’s corroded, leaking from the panel or no longer heating properly.
Signs You May Need a Replacement
- Rust or corrosion on the surface or near the bottom of the radiator
- Leaks from the panel itself rather than the valve or joint
- Cold spots, especially at the bottom, which can point to sludge buildup
- Poor heat output that doesn’t improve after bleeding
- Repeated repairs on the same radiator
- Dents or damaged panels
- Old, seized valves that can’t be turned or keep leaking
When Repair May Be Enough
- Air trapped in the radiator (bleeding fixes this)
- A leaking valve or loose connection
- A stuck TRV pin
- Cold radiators caused by an unbalanced system rather than the radiator itself
If several radiators have cold spots, the cause may be sludge throughout the system. In that case a central heating power flush can be a better fix than replacing radiators one by one.
What Is Included in Radiator Replacement?
A standard radiator replacement usually includes removing the old radiator, fitting the new one, connecting the valves and pipes, refilling the system, and testing for leaks and heat.
A typical quote should cover:
- Removing the existing radiator
- Supplying the new radiator (if the quote is supply and fit)
- New brackets
- Valves and pipe connections
- Installation
- Refilling the system and checking for leaks
- A heating test
- Balancing, where needed
- Disposal of the old radiator
Often extra: new TRVs, pipework alterations, decorating or making good the wall, moving a radiator, and a power flush.
How Long Does It Take to Replace a Radiator?
A like-for-like radiator replacement usually takes one to two hours. The time includes draining, swapping the radiator, refilling and checking for leaks.
Moving a radiator or altering pipework can take a half day to a full day. Replacing several radiators will often take a day or more, depending on the number and the access.
Do You Need a Plumber or Heating Engineer to Replace a Radiator?
A qualified plumber can replace a radiator. You only need a Gas Safe registered heating engineer if the work involves the boiler or any gas component.
Radiators are part of the water side of your heating system. Swapping one is standard plumbing work. If the job involves the boiler, a gas supply or major changes to the system, use a Gas Safe registered engineer. You can check any engineer’s registration on the Gas Safe Register website.
For work across the whole heating system, a heating engineer is usually the better choice, since they can look at the radiators, boiler, controls and system health together.
How to Get an Accurate Radiator Installation Quote in London
You’ll get the most accurate quote by giving the installer clear details about the job before they visit. Having this information ready also helps you compare quotes fairly.
Have this ready:
- Your postcode or borough
- The size of the existing radiator (height, width, and depth if possible)
- The radiator type (single panel, double panel, vertical, column, towel rail)
- Photos of the radiator, valves and pipework
- Whether it’s a replacement or a new installation
- Whether the radiator is moving
- Whether you already have a new radiator or need one supplied
Questions to ask any installer:
- Is the price supply and fit?
- Are valves included?
- Is VAT included?
- Is old radiator disposal included?
- Does the price cover draining, refilling and balancing?
- Is there a guarantee on the work?
Radiator Installation & Replacement Across London
We cover radiator replacement and installation across North, South, East, West and Central London. Prices can vary slightly by area because of travel, parking and access.
For related work, see our guides to radiator installation in London, central heating installation, and boiler replacement.
Radiator Installation & Replacement FAQs
How much does it cost to replace a radiator in London?
Replacing a radiator in London typically costs £180-£350 for a like-for-like swap. The price rises to £300-£550 or more if valves or pipework need changes. Designer or vertical radiators can cost more. The exact figure depends on the radiator type, access and the condition of your existing pipes.
How much does it cost to fit a radiator in London?
Fitting a radiator in London usually costs £180-£350 when it replaces an existing one. Fitting a radiator in a new position costs more, often £350-£650 or above, because it may need new pipework, valves and extra labour.
How much does a new radiator cost including installation?
A new radiator including installation in London typically costs £180-£400 for a standard panel model. Designer, vertical or column radiators can cost £350-£900 or more fitted. The total depends on the radiator, valves and whether pipework needs altering.
How much does it cost to replace five radiators?
Replacing five standard radiators in London typically costs around £850-£1,600. The price drops per radiator compared with single visits because draining, refilling and setup are shared. Designer radiators, new valves or pipework changes will push the total higher.
How much does it cost to move a radiator?
Moving a radiator in London usually costs £350-£650 or more. The price depends on the distance, the pipework route and the floor type. A short move along the same wall costs less than relocating a radiator to a different room.
Does radiator replacement include valves?
It depends on the quote. Many installers include new valves because old ones can fail when disturbed, but some price them separately. Always ask whether valves, TRVs and pipe connections are included before you accept a quote.
Can you replace a radiator without replacing the pipework?
Yes, if the existing pipes are in good condition and the new radiator’s connections line up with them. A same-size, like-for-like swap often needs no pipework changes. A different size or pipe position may need small alterations.
How long does it take to replace a radiator?
A straightforward radiator replacement takes about one to two hours. Moving a radiator or changing pipework can take half a day to a full day. Replacing several radiators in one visit may take a day or more.
Do I need a plumber to replace a radiator?
Yes, a qualified plumber should replace your radiator. You only need a Gas Safe registered engineer if the work involves the boiler or any gas component. A plumber can handle the radiator, valves and pipes.
Is it cheaper to replace multiple radiators at once?
Yes, replacing several radiators in one visit usually costs less per radiator. The plumber drains and refills the system once and travels once. You may also be able to negotiate a better rate on supply and fit for the whole job.
Should I repair or replace an old radiator?
Repair a radiator if the problem is a stuck valve, trapped air or a leaking joint. Replace it if it’s corroded, leaks from the panel, has persistent cold spots or keeps needing repairs. Old radiators can also lose heat output over time.
Does radiator replacement require draining the heating system?
Often yes. Most installers drain the system, or at least the section serving that radiator, before removing it. If isolation valves are fitted on both sides, the plumber may only need to drain that one radiator.
Final Thoughts
For most London homes, replacing a single radiator like for like costs £180-£350. Moving a radiator, adding a new one or choosing a designer model can push the price to £350-£900 or more. The biggest factors are the radiator type, the pipework and how many radiators you’re replacing at once.
Get your quote in writing, check what’s included, and send clear photos and measurements. That lets an installer price the job accurately instead of leaving surprises for the day.