My gas boiler is not working, what should I do?

No heat or insufficient heat  

• Is the electricity supply to the system switched on? Check the fuse on the system isolator. If you need to change it, use a 3-amp fuse only. 
• Is the timeclock control set correctly? 
• If the boiler has a selector switch, have you selected 'heating'? 
• Is the boiler thermostat on the setting you require? 
• Have you reset your boiler? Always reset in accordance with the manufacturer’s user instructions. 
• If you have a room thermostat, is it set to the room temperature you require? When a room reaches the temperature set on the thermostat the radiators will cool. 
• If you’ve a wireless programmable room thermostat, do the batteries need replacing? 
• Is the natural gas turned on at the meter? 
• If you have a Pay As You Go meter, is your credit low? 
• If your boiler has a pilot light, is it lit? Always relight in accordance with the manufacturer’s user instructions.  
• If the radiator is hot at the bottom only, it may need to be bled. 
• If you have thermostatic valves fitted at your radiators, are they at the settings you require? 

You can also check out our helpful video: What to do if your boiler isn't working 

If you still need to book a boiler repair, you can book an appointment in our repair section.