A traditional vented cylinder requires connection to a water tank, usually in a loft or attic space, using gravity to deliver hot water to the home. An unvented cylinder uses a pressurised system, that has a direct feed from your cold water supply, so there is no need for a cold water storage tank in the loft or attic.. And definitely before committing to a cylinder in the loft. Again this is something we would check at the survey stage. Loft hatches can be made bigger at very little expense, so don’t write the idea off until we’ve checked it. Consideration 3 – Frost. When all your hot water is sitting above your heads, it is well worth mentioning the.

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The hot water cylinder is unvented (Joule Cyclone 125) and installed with all the necessary pressure relief valves and containers in the loft. An OFTEC engineer came to inspect and commission the boiler and stated the cylinder was a potential bomb as it was unprotected from frost and said it would be best to relocate the cylinder on the ground.. This mean the hot water cyclinder needs to go in the loft. The Cylinder is a integrated type (with a built in header tank), made of copper and its about 90cm high so not huge. Im going to prepare all the space so its a quick (ish) job for a plumber to connect up. My biggest concern is the weight on the loft floor/ceiling joists.