Electrics and gas
An acoustic enclosure surrounds the heat pump and was not opened. What of the unit itself was actually seen?
The unit itself was largely unseen. An acoustic enclosure surrounds the heat pump and was not opened, so the survey saw the box, the pipes entering it, and whatever edge remained in view. It did not see the fan, the coil, the connections inside the box, or a data plate hidden by the cover. The enclosure is a housing. It is not the machine. The survey has not measured noise, has not checked efficiency, and has not verified any registration. What was actually seen is the outside of the enclosure, not a proper view of the heat pump within it.
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?
Enclosures are fitted to shelter a unit and to blunt its sound. They also hide the very parts a condition note would want: corrosion on the coil, leaks at the valves, and the label that identifies the model. Leaving the cover on is a limit. The survey should say the limit. It should not describe the machine as inspected because the cabinet looked tidy. Pipes at the perimeter show a connection. They do not show the joint inside, and they do not show that the enclosure itself is draining.
Ask the solicitor for any commissioning sheet, warranty or registration paper, and do not pretend those papers were read off a hidden plate. The survey has not verified a registration. Approved Document L is energy-performance guidance for building work, and this visit has not issued a building-regulations certificate. If the enclosure must be opened, that is a further look with the seller's agreement. Tell a lender the heat pump was boxed in and not opened. The cabinet is not the inspection of the unit.
What should you ask your surveyor?
- Was the enclosure opened on this visit?
- Which parts of the heat pump stayed hidden inside it?
- Has noise or efficiency been measured?
What are the typical next steps?
- Treat the unit inside the enclosure as not inspected.
- Ask the solicitor for commissioning and warranty papers.
- Do not describe the cabinet as a view of the machine.
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 quiet cabinet mean the installation meets a noise rule?
No. The survey has not measured noise and has not applied a noise limit, which this note does not invent. Quiet on one visit can depend on whether the unit was even running. The enclosure was not opened. A tidy box is not a test. If noise is a concern, it needs its own assessment, separate from this visual limit.
Can the data plate be assumed from a brochure in the pack?
No. A brochure is a maker's general leaflet, not the plate on this unit, and the plate was hidden. The survey has not matched a model number it could not see. Ask for the commissioning paper, which may name the unit. Until then the identity of the machine inside the enclosure stays unverified.