How to Repressurise a Heating System with an External Filling Hose

3rd October, 2018
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If you have a combi or system boiler, which are both sealed systems, there is likely to be a water pressure gauge on the front.

This should be at a setting of around 1 bar whilst the heating is off. When the boiler is operating, the gauge will usually rise to 1.5 bar or more. If the gauge has dropped below 1 bar, the water pressure will need to be topped up.

To top up your system, watch our helpful video: How to Repressurise a Heating System with an External Filling Hose

If you are having to repressurise your heating system much more frequently, please contact us to book an appointment.