It’s completely normal for your boiler to lose pressure over time. As you use hot water or turn the heating on, the pressure can slowly drop. You might also notice a drop after bleeding your radiators. However, if your boiler keeps dropping in pressure over a short period of time, it could be a sign of a more serious boiler problem.
Leaks
A leak somewhere could be what’s causing a problem with your boiler’s pressure. As water leaks out, it disturbs the balance between water and air in the system. There could be a leak in the boiler itself or it might be somewhere else in the system. If you suspect that there could be a leak somewhere, the best thing to do is get a heating engineer to come and carry out your boiler repair.
Faulty Parts
A faulty part in your boiler is another possibility for a boiler that keeps losing pressure. Of course, sussing out just what’s wrong with a hidden boiler part isn’t exactly easy to do. Your boiler might give you a clue by showing a fault code on its screen. But unless you’re a Gas Safe registered engineer yourself, you’re going to need one to come and diagnose the issue for you. They can find and fix any faulty parts, and repair or replace them as needed.
Old Boiler
Just like everything else, boilers only last so long. If your boiler is older than ten years old, it could be starting to deteriorate. Not only that, but it might be less efficient too. The best way to deal with an out-of-date boiler is to arrange a replacement.
