But when is the right time to replace your boiler, and what should you be looking for in a newer model? If you think you have a blocked sewer, please contact us so we can find out whether it is a public or private sewer. But if you turned your heating to keep warm only to find that your boiler has packed up, how much should you pay to get it fixed? Look at each tradesperson's profile to see their ratings and reviews. With a new energy efficient boiler? The drain experts is a trading name.