Plumbers typically work on heating systems, including radiators and pipework, but not all of them are qualified to work on the boiler itself or the gas pipe. However, these days you'll find that some plumbers have also trained as Gas Safe engineers – making them well-equipped to repair a gas boiler.

If you need to install or repair pipes or fixtures, you'll want to hire a plumber. If you need to install or repair a heating system, you'll want to hire a heating engineer.

You cannot repair your own gas boiler and it's against the law to do so. Only a gas safe heating engineer can work on a gas boiler or gas appliances. This is because of the high risk of gas leaks and explosions if gas pipes are handled incorrectly. There may be steps you can take before you call a heating engineer.

Heating engineers are experts on fixing boilers and can complete tasks including installing new boilers, repairing boilers, running new gas pipes, fixing gas leaks, changing radiators, fixing leaks, and installing heating controls.