Your Kitchen Exhaust Failed an Inspection: What Happens Next

An inspection report is a short document that creates a long week. Somebody has walked the kitchen, looked at the hood, opened what could be opened, asked for records, and left behind a list of findings and a date by which they expect them closed. The kitchen is still open, the deadline is real, and nobody in the building knows which of the items on that list is a two-hour job and which is a three-week one.

That sorting is the whole task. Most of the panic we get called into is not caused by the findings themselves — it is caused by treating a list of very different problems as one problem with one deadline.

First, read what was actually written

Findings from an inspection are usually specific, and the specific wording tells you what kind of job it is. In our experience they fall into three groups, and the groups do not behave alike.

Evidence findings. The system may be perfectly serviceable, but nobody can produce a record of when it was last cleaned, what was done, or what condition the duct is in. A surprising share of failed inspections are failures to produce evidence rather than failures of the equipment. These close fastest, and they close permanently once a proper record-keeping habit exists.

Condition findings. Grease accumulation in the duct or on the fan, filters missing or the wrong type for the cooking line, a fan running but moving far less air than it should, a suppression system whose service is out of date. These are work, but they are known work with known durations.

Design and build findings. No access panels along the duct run, a discharge point that puts cooking odour where it should not go, a duct route that no longer suits the kitchen, a hood that does not capture what is now being cooked under it. These are the ones that cannot be closed in a weekend, and the ones people underestimate first.

The evidence half, which is cheaper than it looks

Before booking any work, gather what you already have:

• Cleaning records, with dates, scope and — ideally — before and after photographs. We have written about why that photographic record matters, and an inspection is exactly the moment it earns its keep.
• The fire suppression system's most recent service report and the tag date on the unit itself.
• The filter type actually installed, against what the cooking line needs.
• Any air balancing or commissioning figures for the system, if it was ever measured.
• The as-built duct route, or a sketch of it, showing where access is available.

Two things usually emerge from that exercise. The first is that some findings are already answerable and simply were not answered on the day. The second is the gap that caused the finding — most often that cleaning has been happening, but only at the hood face, and nobody has ever recorded what happens beyond the first bend.

The condition half, and how long it really takes

A full clean of hood, filters, plenum, duct run and fan is night work. It is done with the kitchen closed, and for most operators that is one overnight shift rather than a shutdown — which is the single most reassuring thing to learn on the morning after a bad inspection. What extends it is not the cleaning itself:

• Access. If there are no access panels along the duct, the duct cannot be cleaned properly and cannot be shown to have been cleaned. Cutting and fitting proper access panels is fabrication work, and it has to be scheduled.
• Parts. A failed motor, a set of correct baffle filters, or suppression system components carry lead times that are outside anyone's control on the night.
• Landlord approval. In a mall or a shared building, hot works, riser access and out-of-hours entry all need permission, and that permission is a queue rather than a phone call.

The findings that are really design problems

Some inspection findings are not maintenance failures at all. They are the system telling you it no longer matches the kitchen. A hood sized for the original menu will not capture a wok line that was added later; a duct route that was adequate at opening will not cope after the extraction demand doubled; a discharge point that never bothered anyone will start attracting complaints when the building next door changes use.

Closing that kind of finding with a deep clean buys a few months and then the same finding returns. It is worth being honest with yourself about which category you are in, because the recurring version is far more expensive than the one-off fix. If the same item keeps reappearing, that is the diagnosis.

What to have ready on the day of re-inspection

1. The report of the works carried out, dated, with the scope written in the same terms as the findings.
2. Photographs before and after, from the same positions.
3. The suppression system service documentation, current.
4. Somebody on site who can open the access panels and answer questions about the system, rather than only the duty manager.
5. A forward maintenance schedule. It answers the unspoken question of whether the inspector will be back for the same reason next year.

The last one carries more weight than most operators expect. A closed finding with no plan behind it reads as luck; a closed finding with an interval attached to it reads as control.

Setting the interval so it does not happen again

There is no single correct cleaning frequency, because the driver is what you cook rather than how big the kitchen is. A heavy wok and deep-fry line loads a duct far faster than a bakery or a steaming line — the difference is not marginal, it is the difference between a quarterly and an annual conversation. We set that out in how often a commercial kitchen exhaust really needs cleaning, and it is the number worth getting right immediately after an inspection, while the cost of getting it wrong is fresh.

The other permanent fix is access. Access panels at the right intervals along the duct turn cleaning from a partial job into a complete one, and turn an inspection from an argument into a walkthrough.

The authorities are not the enemy of the operator

It is worth remembering what the findings are for. We have set out separately what SCDF looks at in a commercial kitchen ventilation system and what NEA expects from a kitchen exhaust system. Read together, the pattern is consistent: grease that accumulates where it cannot be seen or reached is the risk, and evidence that it is being managed is the requirement. An operator who can show both is not fighting anybody.

If you are holding a report right now

Send us the findings as they are written, along with the deadline. We will tell you which items are evidence, which are cleaning, and which are build work that needs a programme — before anybody quotes anything. Every kitchen is different, so there is no fixed price for the work itself; what we can give you straight away is the sorting, which is the part that decides whether the deadline is comfortable or not.

WhatsApp us on 8989 2833 — we are on standby 24/7. Our kitchen exhaust cleaning work is documented as it goes, precisely so the next inspection is a shorter conversation than this one.