18 October 2021

If your boiler smells like gas, this can be a sign of a potentially serious problem that needs inspecting immediately.


If you smell gas from your boiler, you should immediately report a suspected gas leak to the National Gas Emergency Helpline by calling 0800 111 999.

You should also adhere to the following guidelines to maintain safety whilst you wait for a Gas Safety Engineer to arrive:

  • Make sure all doors and windows are open

  • Switch off your gas supply and ensure it stays off until you have been informed that it is safe to switch back on by a Gas Safety Engineer

  • Don't operate electrical switches

  • Don't smoke cigarettes

  • Don't light naked flames (such as candles, matches or cigarette lighters)

  • Avoid turning on lights or any devices connected to the electrics

  • If you feel unwell, visit your GP or hospital immediately and let them know that you may have been exposed to carbon monoxide

What could cause my boiler to smell like gas?

If you're wondering why your boiler smells like gas, there are a multitude of reasons that could be causing it. If you have home emergency boiler cover but recognise signs of a potentially serious gas leak, for example, a rotten egg smell, we always recommend contacting a gas safety specialist. A specialist can provide a proper diagnosis in case a dangerous situation were to occur.

  • Gas leak

  • Circuits or elements becoming too hot

  • Build-up of dust

We offer an optional boiler service with our home emergency packages, allowing you to keep track of your boiler's health on an annual basis. For more information, view our boiler cover packages and get an instant quote online.