Sounds like a Fortic. A plumbing supplies company will sell you a new one.
Take the measurements with you to get a like for like replacement if you are
staying with the same size. You may be lucky and find that the pipes connect
without needing any alterations, if not then the pipework will need to be
changed to suit the positions of the connections on the new tank. Is your
present tank foam lagged or is it bare copper with a hot water cylinder
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.