Leasehold

The report mentions a calorifier next to a shared plant room. Has a system this flat's survey did not operate been tested, or only named?

Only named. A calorifier next to a shared plant room is a hot-water vessel, heated by a coil from a boiler or a communal circuit, and this flat's survey did not operate that system. The vessel, or the plant-room door, may have been seen. Nobody turned the plant on, proved the coil or traced how hot water reaches this flat. Looking at a calorifier is not a test of shared heating. The report has recorded the vessel and the room. It has not decided that the system works, and it has not decided that it has failed.

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?

In a block, a calorifier often serves more than one flat, so the plant is common equipment even when the cylinder sits near this demise. A survey of one flat does not hold keys to every valve, and it does not run the boilers to see whether the coil heats. Temperature at a tap, if it was tried, would still not be a test of the shared plant. The report's mention is an identification. The unread gauges, the unopened door and the unworked pumps stay outside the finding.

Ask the managing agent who maintains the plant room and for any service record of the calorifier. Tell the solicitor the flat survey did not operate the shared system and cannot say it is sound. A heating engineer would need a separate instruction, and access, before anyone relies on the plant. Do not tell a lender the hot water was tested. The survey named the vessel. It did not commission it.

What should you ask your surveyor?

Did you enter the plant room, or only see the calorifier from the flat side?
Was the shared heating operated at all during the visit?
Is the calorifier common plant rather than equipment inside this demise?

What are the typical next steps?

Treat the calorifier note as identification, not a test.
Ask the managing agent for the plant-room service record.
Tell the solicitor the shared system was not operated.

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

If a tap in the flat ran hot, has the calorifier been tested?

No. Hot water at a tap, even if someone tried it, does not operate or test the shared plant. The report names a calorifier next to a plant room that this flat's survey did not run. A single outlet does not prove the coil, the valves or the rest of the circuit. The system stays untested.

Who is responsible for a shared calorifier?

The survey does not decide that. A calorifier in a shared plant room is usually common plant, so repair sits with whoever the lease names, often through the service charge. This visit did not read the lease and did not operate the system. Ask the solicitor who maintains it. The report has only named the vessel.