How to top up boiler pressure

Why might you need to increase the pressure in your boiler?

Low water pressure in your boiler might be the reason you have no hot water in your home. Fear not, it’s easy to spot and, in virtually all cases, you can increase it yourself without a heating engineer needing to visit.

What causes low water pressure in boilers?

Boilers heat cold water that flows around a circuit of pipes and radiators throughout the home. Water pressure needs to be stable in order for the boiler to work as efficiently as possible, but it can be affected by a leak or even the bleeding of a radiator. Even the tiniest of leaks can cause a loss of pressure if it’s gone unnoticed for some time, so it’s worth having a look around your home for signs of wet patches around radiators, pipes and the boiler itself (don’t open up the boiler though). Similar, if you’ve bled a radiator recently, the air it released may have caused a loss of pressure in your boiler system.

Follow the below steps to increase the increase your boiler...