Electrics and gas
The cylinder is labelled a thermal store and the agent calls it a heat-pump cylinder. Which name did the survey actually verify?
The survey verified neither name. The cylinder is labelled a thermal store, and the agent calls it a heat-pump cylinder, but the inspection recorded those words without opening the vessel or matching a data plate that would settle the point. A thermal store and a cylinder built around a heat pump are not the same piece of kit. The visit did not decide which description is right. The name on the case and the name in the particulars both remain unverified.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
Labels peel, agents repeat what they were told, and a white cylinder in a cupboard can be either thing until the plate, the connections and the paperwork agree. The survey did not test how the vessel heats, did not measure its performance, and did not decide eligibility for any grant. The Boiler Upgrade Scheme is a grant route in England and Wales, not in Scotland or Northern Ireland, and this visit does not decide eligibility and must not quote a grant figure. Naming the cylinder was not that decision either.
Ask, through the solicitor, for the data plate photograph, the installation certificate and any commissioning sheet, and compare those papers with both names. A heating engineer can identify the vessel if the papers conflict. Do not tell a lender the house has a heat-pump cylinder, or a thermal store, as a verified fact. Say the two names were heard and neither was proved. The survey has not issued a building-regulations certificate for the installation.
What should you ask your surveyor?
- Did the survey match a data plate to either name?
- Was heat-pump performance or stored-water hygiene tested?
- Are the agent's particulars being treated as identification?
What are the typical next steps?
- Leave both cylinder names unverified.
- Ask for the data plate, certificate and commissioning sheet.
- Do not tell a lender either name is a proved fact.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
Does a heat-pump outside prove the cylinder's name?
No. An outdoor unit shows that a heat pump may be present. It does not prove what the vessel indoors is called or how it is piped. The survey did not verify the thermal-store label or the agent's heat-pump-cylinder name. Papers and the plate are what would settle it. This visit did not pretend they had.
Has the survey decided a grant can be claimed on this cylinder?
No. The survey does not decide grant eligibility and must not quote a grant figure. The Boiler Upgrade Scheme is a route in England and Wales toward a heat pump or biomass boiler, not a finding of this inspection, and it does not apply in Scotland or Northern Ireland. Neither cylinder name was verified, so a grant story cannot start from this report.