Baxi Boiler Pressure Too Low: How to Increase!

Baxi boiler pressure guide https://housewarm.co.uk/blog/heating/baxi-boiler-pressure/

Why does my boiler keep losing pressure? https://housewarm.co.uk/blog/heating/boiler-keeps-losing-pressure/

Learn how to repressurise a Baxi combi boiler when the pressure is too low. The Baxi 600, Baxi 800, and Main Eco Compact combi boiler are all the same.

If you have a different Baxi boiler, the process will be the same but the filling loops might be slightly different.

You must open both valves to let water into the heating system.

If you have two black knobs, turn one anti-clockwise as far as it will go to open it, then turn the other one anti-clockwise slowly until you hear the water and see the pressure gauge moving.

Then turn both knobs clockwise as far as they will go to close them when you have reached the correct pressure.