How to Increase Boiler Pressure
The boiler is a critical element in our homes. Most of us will know the term ‘low pressure’, but what does it mean? If you’re experiencing problems with your boiler - namely a loss of heating and hot water supply - low pressure could be at fault.
If the pressure in your boiler is lower than usual, our useful guide can tell you why this happens. We’ll also show you how to make simple checks to help diagnose a problem, plus we’ve tips on how to top up your boiler pressure.
What is Low Boiler Pressure?
Cold water that flows around the pipes and radiators in our homes is heated by the boiler. To work as efficiently and consistently as possible, the pressure in the boiler system needs to remain stable. If the pressure in your boiler drops beyond its optimal level, it can’t sufficiently heat the cold water - leaving you without heating or hot water. As you might imagine, the precise pressure requirements for boiler types are different. To quickly and easily find out exactly what your boiler pressure should be, start by checking the manufacturer’s handbook or manual. Here, you’ll find the correct pressure information and accurate measurement details for your boiler.
How to Fix Low Pressure
Reassuringly, there are some simple steps you can take to correct the pressure yourself. If the pressure reading is below 1.5, this could indicate that the boiler needs to be repressurised. This is an easy job that keeps your boiler working efficiently. If you’ve already checked the pipes and around the boiler and haven’t discovered any leaks, you can top up the system by adding more water.
Follow these steps.
- Locate the boiler manual and find the pages on low pressure
- Switch your boiler off and wait for the system to cool down (at least an hour)
- Check both ends of the filling loop are securely attached (your boiler may use a key instead)
- Open both valves to let water into the system (listen for the sound)
- Check the pressure gauge has risen to 1.5
- Close both valves tightly, one at a time
- Turn the boiler back on (you may need to push the reset button)
- Undo both ends of the filling loop - catch any excess or dripping water with a towel
- Store the filling loop (or key) somewhere safe
Still having issues?
If you’re still struggling to regulate the pressure of your boiler or are unable to locate the filling loop or filling key, you may want to think about getting your boiler, heating system and general plumbing covered by a specialist like YourRepair. We have specialist landlord plans to suit every budget. Please click the link below and browse our fantastic assistance packages.
