repair-or-replace-a-boiler-cost
The average cost of replacing
a boiler is around £1,800
Pricing guides

How much does it cost to repair or replace a boiler?

Boilers are the unsung heroes of our homes, allowing us to relax in warmth and comfort on a cold winter evening, and providing us with hot water for baths and showers. When something goes wrong with a boiler though, it can have a huge impact - so keeping your boiler in good working order is essential. We’ve spoken to some of the experienced tradespeople on MyBuilder to find out what you need to know when it comes to boiler repair costs and how it much is costs to replace a boiler, or install a new one.

repair-or-replace-a-boiler-cost

Gas Boilers 

Traditional gas boilers are most commonly found in older homes, or those with low water pressure, and rely on a cold water tank in the loft to help feed the whole system. Older boilers may generally be more expensive to repair as replacement parts may be harder to come by. 

Gas Boiler Prices

The average price of a traditional boiler, plus installation, is around £1,500 to £1,800. They can be bought from a variety of places, with the cost of installation typically included.

Gas Boiler Installation Costs

Installation costs will typically be included with the price of purchasing a new boiler. If you are buying a boiler separately, a gas engineers or qualified plumber will typically charge an hourly rate of around £60 to £100 depending on location and the time they are being called.

Gas Boiler Repair Costs

The cost of boiler repair will vary depending on the issue - simple fixes and replacements may only set you back around £150, while more complex issues could cost £300 or more.

Gas Boiler Service costs

Boilers should typically be serviced once a year to make sure they’re in working order with no potential problems. An inspection will usually cost around £75 to £100, with larger, national firms often charging more.

MyBuilder Top Tip

You should only ever hire a Gas Safe registered engineer to carry out boiler work in your home. Anyone working on an appliance connected to a gas supply who is not registered with the scheme, formerly CORGI, is breaking the law. Ask to see a tradesperson’s Gas Safe card and check their number with the Gas Safe database. 

repair-or-replace-a-boiler-cost

Combi Boilers 

Combi boilers are increasingly common in modern homes, with a compact unit that powers both central heating and hot water. They are generally more cost and energy efficient. 

Combi Boiler Prices 

Combi boilers are typically more expensive up front than traditional boilers, though work out cheaper in the long run than traditional boilers. A new boiler will usually range from around £1,800 to over £2,000, including installation fees, which will normally be included in the purchase price. 

Combi Boiler Installation costs

Normally, installation costs are included with the price of purchasing a new boiler. If you are buying a boiler individually, gas engineers or qualified plumber will charge an hourly rate of around £60 to £100 depending on location and the time they are being called.

Combi Boiler Repair Costs

Repair costs will vary from case to case depending on what the underlying issue is, but will generally be cheaper than the repair costs involved in an older boiler. Expect costs to range from around £100 to £300.

Combi Boiler Service costs

It is a good idea to schedule a boiler service every twelve months to ensure they’re running as they should. An inspection will usually cost around £75 to £100, with larger, national firms often charging more.

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How long does a boiler replacement take?

A full boiler replacement, taking out an old boiler and fitting an entirely new unit, will typically take a day, or a day and a half to complete. Repairs can often be carried out within a couple of hours if the needed parts are readily available, while a service will only take around 30 minutes if there are no problems.

repair-or-replace-a-boiler-cost

How to keep boiler costs down

Regular servicing is the best way to keep costs down, as paying for an annual service will almost certainly be cheaper in the long run than paying to fix a major issue should one arise.

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