Unvented Hot Water Cylinders What is unvented Hot Water? Table of contentsWhat is unvented Hot Water?So when the freezing winters arrive no need to worry about frozen pipes.In my opinion, Megaflo is probably one of the best makes around, but it comes at a cost.The Megaflo has an internal expansion gap, and this help boosts the pressure.Most other makes have an external expansion vessel.I [...]
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