Radiator Installation Costs UK — What to Charge to Supply and Fit a Radiator in 2026

The Three Main Radiator Jobs and What to Charge

Almost every radiator enquiry falls into one of three scenarios. They are very different jobs with very different labour profiles, so price them separately rather than quoting a single "radiator" rate. Here's a breakdown with current UK price ranges.

1. Like-for-Like Radiator Swap

This is the simplest job: an existing radiator is removed and a new one of the same size fitted onto the existing pipework and valves. There's no new pipe to run and the bracket positions usually line up closely. If you isolate at the valves, you can often do this without draining the whole system — close the lockshield and TRV, drain the single radiator into a bucket, swap it, and refill.

The catch is that the valves are frequently seized or the spindles weep when disturbed, so always quote on the basis that you may need to replace one or both valves. A clean swap on accessible 15mm pipework is an hour's work; allow more if the pipe centres don't match and you need to adjust the tails.

• Labour for a straightforward swap: £100–£200
• Plus a standard convector radiator (supply): £40–£120
• Plus a pair of valves if replacing: £20–£60
• Typical all-in (supply and fit): £150–£350

2. Brand-New Radiator with New Pipework

Adding a radiator where there wasn't one before — a converted garage, an extension, a cold spare room or a hallway — is a materially bigger job. You need to tee into the existing central heating circuit, run flow and return pipes to the new location, fix brackets, hang the radiator, fit valves and then drain, refill and balance the system. The variable that swings the price most is how far the new pipe run is from the existing circuit and whether you can route it neatly or have to lift floorboards.

A short run from a nearby pipe in an accessible void is quick. A run across a room under a chipboard floor, or up a wall and across a ceiling, can take most of a day. Always survey the route before you price — guessing on pipe runs is the single biggest cause of losing money on radiator work.

• Labour with a manageable pipe run: £200–£450+
• Plus radiator, valves, pipe, fittings and inhibitor: £80–£250
• Typical all-in (supply and fit): £300–£700

3. Upgrading to a Larger, Designer or Column Radiator

Customers often want to swap a tired standard panel for a designer flat-panel, an anthracite vertical, or a traditional cast-iron-style column radiator. The labour can be similar to a like-for-like swap if the pipe centres match, but these units are heavier (so fixings and wall type matter), the valve positions sometimes need moving, and a vertical radiator may require pipework to be re-routed up the wall. Larger output radiators may also need a pipe upgrade to deliver enough flow.

The bigger cost driver here is usually the radiator unit itself rather than the labour. A budget designer panel is not much more than a standard convector, but a quality anthracite vertical or a multi-column traditional radiator can run into several hundred pounds before you've lifted a spanner.

• Labour (matching centres, straightforward): £120–£250
• Labour (re-routing pipework for a vertical or moved valves): £250–£450+
• Designer / vertical / column radiator (supply): £120–£600+
• Typical all-in (supply and fit): £300–£900+

Where the Money Goes — The Cost Split

On any radiator job the price is made up of four parts: the radiator unit, the valves, the brackets and fixings, and your labour. Understanding the typical split helps you quote confidently and explain the price to a customer who thinks a radiator is "just fifty quid at the merchant".

The Radiator Unit

This is the most variable element. A standard single or double-panel convector — the white pressed-steel radiator on most UK walls — costs from around £40 for a small single up to £120 for a large double-panel from a plumbers' merchant. A designer flat-panel starts a little higher. Anthracite verticals, mirror radiators and traditional multi-column or cast-iron-style units are where the price climbs — anywhere from £150 to £600 and beyond depending on size, finish and brand.

• Standard panel convector: £40–£120
• Designer flat-panel: £90–£250
• Vertical / column / cast-iron-style: £150–£600+

Valves — TRVs and Lockshields

Every radiator needs a pair of valves: a control valve and a lockshield. The modern standard is a thermostatic radiator valve (TRV) on the flow and a lockshield on the return, the lockshield being used to balance the radiator. A budget TRV-and-lockshield pair costs from around £15–£25; a branded angled set is £25–£50; and a chrome or designer-finish set to match a feature radiator can be £40–£90 a pair. Always price a fresh pair of valves on a swap unless you've confirmed the existing ones are sound — re-using a 15-year-old valve that then weeps is a callback you don't want.

• Budget TRV + lockshield pair: £15–£25
• Branded / angled set: £25–£50
• Chrome / designer-finish set: £40–£90

Brackets and Fixings

Most panel radiators come with their own wall brackets, so this is often a few pounds of plugs and screws. It becomes a real line when you're fixing a heavy vertical or column radiator to a stud wall — you may need to add noggins or use heavy-duty fixings, and feature radiators sometimes need a separate floor-mounting or wall-stay kit at £20–£60.

Labour

Labour is where you make your margin, and it's the part customers least understand. A like-for-like swap is an hour or two; a new radiator with a pipe run is half a day to a day. Most UK plumbers and heating engineers work to a day rate of roughly £200–£350 or an hourly rate of £40–£70, higher in London and the South East. Price the labour to the real time on site including draining, refilling, bleeding and balancing — not just the minutes spent hanging the radiator on the wall.

What Pushes the Price Up

Two radiator jobs that look identical on paper can be an hour apart on site. These are the factors that move a quote from the bottom of the band to the top — flag them in your survey and price for them.

• Pipe routing: A new radiator near an existing pipe in an accessible void is quick. A long run, a run across a finished room, or one that has to go up a wall and across a ceiling adds hours and materials.
• Lifting floors: Chipboard and laminate floors take time to lift carefully and re-lay, and tiled or solid floors may rule out a route entirely. Carpet over boards is the easy case; an engineered or glued floor is not.
• Draining and refilling the system: If you can't isolate the single radiator you'll need to drain the whole system, then refill, vent every radiator and re-pressurise a combi or sealed system. On an open-vented system you're also dealing with the feed-and-expansion tank.
• Balancing: After adding or changing a radiator the system should be balanced so every radiator heats evenly — this is skilled time, not a freebie.
• Adding inhibitor: Any time you drain and refill, you must dose fresh inhibitor (around £12–£20 a bottle) to protect against corrosion and sludge. On a dirty system a power flush may be advisable and is a separate, larger job.
• Pipe size: Old 8mm or 10mm microbore, or a larger output radiator that needs 15mm or 22mm to deliver enough flow, can mean upgrading pipework rather than a simple connection.
• Seized or weeping valves: Old valves that won't close or that weep once disturbed turn a swap into a valve job too — always assume the worst on anything more than a few years old.

A Note on Heated Towel Rails

Heated towel rails — the ladder-style radiators in bathrooms, also called towel radiators — are priced differently and shouldn't be lumped in with standard central-heating radiators. They often involve tighter spaces, chrome or designer valves, sometimes a dual-fuel element and electrical work, and frequently sit on the bathroom side of a wall with the pipework hidden behind tiling. If a customer asks for a towel rail, quote it as its own job rather than applying your standard radiator rate.

Worked Examples

Numbers are easier to trust when you can see how they add up. Here are three worked examples using mid-range figures for a typical job outside London.

Example 1 — Straightforward swap

A double-panel convector in a lounge is leaking and needs replacing like-for-like. The valves are in good condition. You isolate, drain the single radiator, swap it, refill and bleed. Roughly an hour and a half on site.

• Labour: £140
• Radiator: £75
• Inhibitor top-up and sundries: £15
• Total: ~£230

Example 2 — New radiator with pipework

A converted garage has no radiator. You tee into a 15mm circuit in the adjacent hallway, run flow and return under a lifted carpet-over-board floor, hang a new double-panel, fit a TRV and lockshield, then drain, refill, dose inhibitor, bleed and balance. Most of a day.

• Labour: £350
• Radiator: £90
• Valves: £30
• Pipe, fittings and inhibitor: £60
• Total: ~£530

Example 3 — Designer vertical upgrade

A customer wants to replace a small panel radiator in a hallway with a tall anthracite vertical for both heat and looks. The valve positions need moving and the pipework re-routed up the wall, plus heavy-duty fixings into a stud wall with added noggins.

• Labour: £350
• Vertical radiator: £320
• Chrome valve set: £55
• Fixings, pipe and inhibitor: £40
• Total: ~£765

How to Quote a Radiator Job

The operators who make consistent money on radiator work quote off a survey, not a phone description. Before you commit a price, run through this checklist:

• Identify the scenario: Is it a like-for-like swap, a brand-new radiator, or an upgrade? This sets the labour band.
• Check the pipe centres: Will the new unit line up with the existing tails, or do you need to adjust them?
• Trace the route: For a new radiator, find the nearest point on the circuit and work out the run, what floors or walls it crosses, and whether you can route it neatly.
• Assess the existing valves: Are they sound, or should you price a fresh pair?
• Confirm system type: Combi, sealed or open-vented — this affects how you drain, refill and re-pressurise.
• Check pipe size: Microbore or undersized pipe to a high-output radiator may need upgrading.
• Quote inhibitor and balancing as standard: Build the time and materials in rather than absorbing them.

Present the quote as separate lines — radiator, valves, fixings, labour — so the customer can see what they're paying for. An itemised quote with a clear note on what could increase the price (seized valves, a power flush on a sludged system) protects you from disputes and positions you above the operator who just texts a single number.

Quick Reference: Radiator Installation Prices UK 2026

Frequently Asked Questions

How much should I charge to swap a radiator like-for-like?

For a straightforward swap onto existing pipework with sound valves, £100–£200 labour is the standard band, or £150–£350 all-in once you add the radiator and any valves. Price toward the top if the pipe centres don't match or the valves need replacing.

Why does a brand-new radiator cost so much more than a swap?

Because you're running new flow and return pipework from the existing circuit, which often means lifting floors or chasing walls, plus draining and refilling the whole system, dosing inhibitor and balancing. That's half a day to a day of work versus an hour or two for a swap.

Do I need to replace the valves every time?

Not always, but it's wise to price a fresh pair on anything more than a few years old. Old valves frequently seize or weep once disturbed, and a returning callback for a leaking valve costs you far more than the £15–£90 a new pair would have.

Should I always add inhibitor?

Yes — any time you drain and refill, dose fresh inhibitor to protect against corrosion and sludge. On a visibly dirty or sludged system, recommend a power flush as a separate job rather than absorbing the risk into a radiator price.

Are heated towel rails priced the same as radiators?

No. Towel rails involve tighter bathroom spaces, often chrome or dual-fuel valves and sometimes electrical work, so quote them as their own job rather than applying your standard central-heating radiator rate.