But when is the right time to replace your boiler, and what should you be looking for in a newer model? What are your experiences of installing a new boiler? how much did you manage to save? let us know! The drain experts is a trading name of the drain experts southern ltd. See our new commercial plumbing page under the services tab! Earn tesco clubcard points as you pay your boiler services bill for every € you pay off your boiler services bill, you get tesco clubcard point.**. At glow-worm we believe.