Vertical vs Horizontal Unvented Tank for Loft Conversion

[ebgt]

disclaimer - just a homeowner looking for advice


Hi


Was looking through old threads and found one that dealt with the pros and cons of horizontal un-vented cylinders - but the last post on it was a while back and I was wondering if people's views (& the the appliances) had changed much.


We're having a loft extension built with an ensuite. We've had a new combi installed in the kitchen - but we're not happy with the amount of hot water it's pushing out and the builder has advised that we could improve the situation by installing a horizontal unvented cylinder (the only room to put it in is under the eaves).


He's recommending ones made by Joule (Cyclone Horizontal Un-Vented Cylinders - Joule)


We've been told (and I've read) various thing about them ranging from "all horizontal tanks are useless) to "they're great". Does anyone here have an informed opinion?


From what I understand there's no issue here with the water pressure or rate of flow - but I'm not expert.


Any info greatly appreciated.

 

[ShaunCorbs]

Need to be sized correctly (50% bigger than required capacity)

But there great

 

[Riley]

They are not as good as vertical cylinders but are more than suitable for say 98% of jobs. I would say straight off ignore whatever the builder says you need to be G3 certified to work on and install these. Insist on getting a qualified engineer in to assess and quote

 

[Sharp Point]

Need to be sized correctly (50% bigger than required capacity)

But there great

Or he could install a Telford horizontal one and fit a bronze pump as per there recommendation s, then could get a normal sized one calculated to their requirements.

Also the extra weight ....maybe 300 kilos from the cylinder, would probably require calculations from a structural engineer.

And finally plenty of room for the annual safety check

 

[dan_the_plumber]

Horizontal cylinders do almost the same job as a vertical cylinder. They just lend themselves to limited head room in attics and spread their weight across more ceiling joists.