Boiler repairs typically cost between £100 and £400, depending on the severity of the fault or damage. Minor faults such as a replacement timer or air pressure switch will cost you about £100 to £200, while more serious faults such as a replacement diverter valve or heat exchanger will cost closer to £400.
The average cost of repairing a boiler is £200
You may not necessarily need to completely replace the boiler part that is faulty. In some cases, it could just need a good clean or recondition which will cost you a lot less. For example, an engineer may be able to fix a faulty fan by simply changing its motor.
The amount you’ll be charged for a boiler repair will vary between engineers. Large national companies can sometimes charge up to 50% more than small local businesses for the same work.
Throughout its lifespan your boiler is likely to need repairing for reasons such as faulty parts (like the pump or gas valve) or from everyday wear and tear. An annual boiler service will help to spot any problems before they get too serious and cause your boiler to break down completely.
If your boiler does need repairing, it’s important that you enlist the help of a qualified engineer who is Gas Safe registered. Attempting to fix it yourself without any experience can be dangerous and cause your boiler to become unsafe. It could also compromise your home insurance and boiler warranty if anything goes wrong.