Electrics and gas
A home battery sits in a closed cupboard and the survey did not open the manufacturer's data. What ventilation and what installer certificate are both outside the visual note?
Both the ventilation the battery needs and the installer certificate are outside the visual note. The survey saw a home battery in a closed cupboard and did not open the manufacturer's data, so it cannot say what airflow that unit requires or whether this cupboard provides it. It also did not see a certificate from the installer. A closed door and a box on a shelf are not those two documents, and they are not a test.
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?
Battery makers specify where a unit may sit and how the space is vented, and installers record commissioning on their own papers. None of that was opened. The survey can say the cupboard was closed and the data was not read. It cannot invent a ventilation rate, and it cannot treat a missing certificate as a pass or a condemnation. The battery circuit was not electrically tested either.
Ask the installer, or an electrician familiar with the battery, for the data and the certificate, and keep those papers separate from the home survey. Tell the solicitor the report has not approved the cupboard. Do not describe a closed door as adequate ventilation. The survey did not measure airflow and did not certify the installation or read the data.
What should you ask your surveyor?
- Did you open the manufacturer's data for this battery, or not?
- What installer certificate, if any, was available to read?
- Was ventilation of the closed cupboard left outside the visual note?
What are the typical next steps?
- Keep ventilation and the installer certificate outside the visual note.
- Ask for the manufacturer's data and the commissioning papers.
- Do not treat a closed cupboard as a tested battery installation.
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 the cupboard door has a gap at the bottom, is that the required vent?
The survey cannot say. It did not open the manufacturer's data, so it does not know what ventilation this battery asks for. A gap under a door was not measured against that data, and no installer certificate was read. The visual note stops at a battery in a closed cupboard. The gap does not become a specification.
Does a recent-looking battery bring its own certificate?
Not in this report. The survey did not see the installer certificate, whatever the age of the case. Newness is not paperwork. Ventilation requirements were also unread because the data was not opened. Both points stay outside the visual note until those documents are produced.