Nicholas Prickett February 27, 2021 I understand the principle of the AAV, what’s your recommendation on after filling the heating system up then turning it off? or do you recommend leaving them open? I ask this as lots of AAV’s start to leak if left open. Thanks ReplyExpand Hide 1 Reply
I understand the principle of the AAV, what’s your recommendation on after filling the heating system up then turning it off? or do you recommend leaving them open?
I ask this as lots of AAV’s start to leak if left open.
Thanks