Top up your heat pump pressure (the easy way)
If your home isn’t feeling as cosy as it should, your heat pump might just need a little pressure boost. Don’t worry - it’s simpler than it sounds, and we’ll guide you through it step by step.
What you’ll need:
A cloth or towel (just in case of drips)
Maybe a small spanner, though often you won’t need one
Step-by-step guide:
Switch off your heat pump
Safety first! Turn it off and let your system cool down for a few minutes.Check the pressure
Have a look at the gauge on your cylinder or your heat pump screen. If it’s below 1 bar, it’s time to top it up.
Find the water valves
Open the cupboard or panel where your cylinder lives. You’ll see the filling loop - a flexible hose with two black plastic stopcock valves. One valve brings water in, the other connects to your radiators.
Tip: if the hose isn’t already attached, you may need to place it on the cylinder or secure it with a rubber band first.
Slowly let water in
Turn both stopcock valves gently to let water flow in. Keep an eye on the gauge - the pressure should start to rise.
Stop at the right level
When the gauge reads about 1 bar, turn the valve off. Easy!
Keep an eye on it
Check the pressure over the next few hours or days to make sure it stays steady.
Pro tips:
System pressure can drop naturally over time. Checking it a few times a year is a good habit.
Keeping your heat pump at the correct pressure helps it run efficiently, saving energy and keeping your home cosy.
Only adjust valves you are confident handling.
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