Which unvented cylinder is good?

7 Nov 2022
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United Kingdom
Hi, I am looking to replace the gravity water system with unvented indirect hot water cylinder.

I came across quite a few different brands online and wondering which one is best to install.

I will carry on using the standard 18KW worcester boiler with the new unvented cylinder.

Here is the list,

- https://www.tdlonline.co.uk/Heating...rd-Tempest-Vertical-Unvented-Cylinder-TSMI200

- https://www.tdlonline.co.uk/Heating...ct-Unvented-Cylinder-Stainless-Steel-PLUIN210

- https://www.plumbnation.co.uk/site/...co-210i-indirect-unvented-hot-water-cylinder/

- https://www.plumbnation.co.uk/site/worcester-green-storage-wb-210-litre-unvented-cylinder/
Last edited:
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No good plumber will buy a pre plumbed cylinder. This also shouldn't be up to you to specify, the coil size needs to be appropriate aswell as the overall cylinder size. You may well want a heat pump within the lifetime of the cylinder so other coil may be beneficial etc.

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