In Summary
When serviced regularly by a gas central heating engineer, a combination boiler (combi boiler) can run at around 90% efficiency, which means your energy bills are reduced as less energy is wasted. If you have a gas central heating boiler, it is important that you have it installed and serviced by a Gas Safe registered engineer (gas boiler installers have to be registered with Gas Safe by law). The gas central heating engineer will make sure your gas boiler is safe and running efficiently.
