Clunking noises, leaks, cracks or black, sooty marks all can suggest that your have a problem with your boiler. Check your boiler regularly and look out for these warning signs. Early detection and repairing of the fault can prolong the life of your boiler. Make sure that external vents, flues and airbricks are always free from blockages and debris. If you detect any of these signs then please feel free to contact us to arrange an engineer’s visit.