how do i up the pressure omn my central heating boiler it has dropped

Rafal Kaczynski

Dear Ivor To top up water pressure in a boiler you can use loop filling valve which is situated below boiler. This is flexible water pipe with 2 valves. Sometimes ( by the regulations ) this pipe is disconected but in most cases gas engineers leaving this pipes just in case if system will reguired filing. I hope this can help. Regards Rafal