Gas Safe Registered and OFTEC Registered engineer. Highly experienced and fully qualified to handle the servicing of your boiler. We can service all types of oil and gas boilers, including open vent, condensing boilers, non-condensing boilers & combination boiler 'combi'. You should never attempt to service or repair your own boiler. It is illegal for non Gas Safe registered engineers to work on gas systems and it is recommended that a registered OFTEC engineer works on an oil heating boiler.