Unvented Cylinder What is an unvented cylinder? An unvented cylinder stores hot water that is supplied to your taps, shower and any other hot water outlets. Unvented cylinders are sealed to the atmosphere, whereas conventional cylinders have a vent pipe that vents over to a tank normally located in the loft area.The water within the tank is stored at high pressure , [...]
Duval Heating 1985 - 2019