It is quite simple to top up the water pressure in your boiler. You should be able to do it yourself without having to call a heating engineer. We have made some videos below to help you.
Please watch the videos right to the end before attempting to top up your boiler water pressure. If you prefer not to do this yourself, or can’t manage, your Gas Safe registered engineer or Baxi Customer Support will be pleased to help, although you will have to pay.