Sounds like the three port should be fine then.
Mick, found out what an 'unvented cylinder' is and mines an open vented type and it's not being replaced.
Cheers
Hi Mick
Thanks for the reply
Errr what do you mean by an 'unvented cylinder'
Is that revering to the hot water cylinder in the airing cupboard?
Sorry i'm not that clever with heating systems :?
Hi
Wonder if someone could clarify something.
I currently have a conventional boiler which I'm planning on changing to a sealed system boiler.
With my current system i have a three way motorised valve in the airing cupboard.
I have had a couple of plumbers out to quote on the job.
One...