A brief explanation between a vented (usually blue, green or yellow) and an unvented hot water cylinder (usually white).
[ Ссылка ]
01256 760617
info@upsherheating.co.uk
![](https://i.ytimg.com/vi/LfB2nddw70g/maxresdefault.jpg)
A brief explanation between a vented (usually blue, green or yellow) and an unvented hot water cylinder (usually white).
[ Ссылка ]
01256 760617
info@upsherheating.co.uk