How Much Does It Cost to Replace a Radiator?
£150 – £450
per radiator
The cost to replace a radiator ranges from £150 to £450 per unit including supply and fitting. Standard panel radiators for an average-sized room fall at the lower end, while designer, column, or oversized radiators are more expensive to buy and fit. The price also depends on whether new thermostatic radiator valves are needed.
Average cost
£150 – £450
per radiator
Prices vary by region, property type and tradesperson. Always get at least two quotes.
What affects the price?
Radiator size and type - a standard single panel radiator costs £40-£120; a double column or designer radiator can cost £200-£600 for the unit alone
Valve replacement - adding new TRVs costs £20-£50 per valve and adds 30-60 minutes of labour
Pipework alteration - if pipes need moving to fit a different size radiator, costs increase by £100-£200
System draining - the heating system must be drained and refilled with inhibitor to protect against corrosion
Labour vs materials
Labour for a straightforward like-for-like swap typically runs £80-£150 per radiator. Materials including the radiator, valves, and fittings make up the remainder of the total cost.
Repair or replace?
A leaking or cold radiator is not always beyond repair. A pinhole leak can sometimes be patched and a cold spot fixed by bleeding or power flushing. If the radiator is heavily corroded or over 15 years old, replacement is usually the better long-term option.
Questions to ask your tradesperson
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