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Kitchen extraction - avoiding the oversell
Cleaning your extract too rarely is dangerous - but cleaning it far more often than it needs is just money wasted. Some providers push a frequency beyond what a kitchen genuinely requires, and the way to resist it is to know what actually determines the right interval: your cooking, the standard, and the grease itself.
The short answer
The right cleaning frequency is set by real factors - your cooking volume, the recognised standard's guidance, your system's condition, and above all the grease the system actually accumulates. Being oversold means being pushed to clean more often than those factors justify. To avoid it, ground the frequency in the evidence: place your kitchen in the standard's use band, adjust honestly for your conditions, and verify by the grease. A frequency justified by the grease staying within the standard's limits is right; one justified only by a sales pitch is not.
Both errors cost
There are two ways to get cleaning frequency wrong, and both cost. Cleaning too rarely is the dangerous one - it lets grease build to a level that carries fire risk and can breach compliance, which is why under-cleaning is the serious error. But cleaning far more often than the system genuinely needs is wasteful - paying for cleans that are not required, spending money on frequency that adds no real safety benefit because the grease was never near a dangerous level. The right frequency sits between these: often enough to control the risk, but not more often than that.
Being oversold is the second error - being pushed toward a frequency beyond what the kitchen actually needs. It is worth naming because it is a real possibility: a provider has an incentive to recommend frequent cleaning, and while frequent cleaning is genuinely necessary for some kitchens, it can also be over-recommended for kitchens that do not need it. Avoiding the oversell is not about resisting proper cleaning - under-cleaning remains the dangerous error - but about ensuring the frequency is set by what the kitchen genuinely requires rather than pushed higher than the evidence justifies.
What actually sets the frequency
The defence against being oversold is knowing what genuinely determines the right frequency, so you can judge a recommendation against it. The main driver is your cooking volume - how many hours a day and how grease-heavily you cook - because that sets how fast grease builds. The recognised standard translates that into indicative intervals by use band: roughly quarterly for heavy use, six-monthly for moderate, annually for light, as a baseline. Your system's condition and any insurance or fire risk requirements adjust it. These are the real factors that set the frequency.
Above all, the ultimate test is the grease the system actually accumulates. The standard defines acceptable cleanliness by measurable grease limits, so the genuinely right frequency is the one that keeps the grease within those limits - no more often than that is needed. This is the objective anchor: a frequency is justified if the grease would otherwise exceed the limit before the next clean, and is excessive if the grease stays comfortably within limits at a longer interval. Grounding the frequency in the cooking, the standard and the grease gives you an evidence-based figure to compare any recommendation against.
How to spot an oversell
An oversell tends to show in a recommendation for frequency that is not grounded in your kitchen's actual factors. If a provider recommends cleaning notably more often than your cooking volume and the standard's bands would suggest, and cannot justify it by reference to your specific cooking type, system condition, or the grease actually found, that is a sign the frequency may be pushed beyond what you need. A genuine recommendation is explicable in terms of your kitchen; an oversell is a high frequency with no real reason specific to you behind it.
The clearest check is to ask for the justification and see whether it is grounded in evidence. Why this frequency? A sound answer references your cooking volume, the standard, your system's specifics, and ideally the grease levels found in your system. An unsound one relies on general assertions, pressure, or a frequency higher than the standard's bands with no kitchen-specific reason. If the recommended frequency cannot be tied back to what your kitchen actually needs, measured by the grease, it is worth questioning - because a frequency without a kitchen-specific, evidence-based reason is exactly what an oversell looks like.
How to get it right
Getting the frequency right, without being oversold or under-cleaning, means insisting that it be evidence-based. Have your kitchen assessed honestly for its cooking volume and placed in the standard's band, adjusted for its genuine specifics, and crucially, have the frequency verified against the grease the system actually accumulates. A frequency set this way is grounded in what your kitchen needs - neither dangerously slack nor wastefully tight - and you can be confident it is right because the grease staying within the standard's limits confirms it.
The grease measurement is the strongest protection against both errors, because it is objective. If the grease is within limits at the current interval, cleaning more often is unnecessary - the evidence says the frequency is adequate. If the grease is approaching the limit, the interval genuinely needs shortening - the evidence justifies more frequent cleaning. Either way, the grease decides, not a sales pitch. So the way to avoid being oversold is to anchor the frequency in the measurable reality of your system: clean as often as the grease requires to stay within the standard, and no more often than that. Evidence, not persuasion, sets the right frequency.
The takeaway
The right cleaning frequency is set by real factors - your cooking volume, the recognised standard's bands, your system's condition, and above all the grease the system actually accumulates - and being oversold means being pushed to clean more often than those justify. Cleaning too rarely is dangerous, but cleaning far more often than needed is wasted money, so the aim is the frequency the evidence supports, neither slack nor excessive.
To avoid the oversell, ground the frequency in the evidence: place your kitchen in the standard's band, adjust honestly for its specifics, and verify against the grease. Then judge any recommendation against that - a frequency explicable by your kitchen's actual factors and confirmed by the grease is right; one that is higher with no kitchen-specific, evidence-based reason is an oversell. The grease measurement is the objective anchor for both errors: clean as often as it requires to stay within the standard, and no more. Let the evidence, not the pitch, set the frequency.
Questions
Being pushed to clean more often than your kitchen genuinely needs. A provider has an incentive to recommend frequent cleaning, and while it is necessary for some kitchens, it can be over-recommended for kitchens whose cooking, condition and grease levels do not justify it.
Cleaning too rarely is dangerous, but cleaning far more often than needed is wasteful - paying for cleans that add no real safety benefit because the grease was never near a dangerous level. The right frequency controls the risk without exceeding what the kitchen genuinely requires.
Your cooking volume (the main driver), the recognised standard's indicative bands by use level, your system's condition and any insurance or fire risk requirements - and above all the grease the system actually accumulates, measured against the standard's limits.
By whether the recommended frequency is grounded in your kitchen's actual factors. A genuine recommendation is explicable by your cooking volume, cooking type, system condition and the grease found; an oversell is a high frequency with no kitchen-specific, evidence-based reason behind it.
The grease measurement, because it is objective. If the grease is within limits at the current interval, cleaning more often is unnecessary; if it is approaching the limit, more frequent cleaning is justified. Either way the grease decides, not a sales pitch.
Have your kitchen assessed for its cooking volume and placed in the standard's band, adjusted for its genuine specifics, and verified against the grease it actually accumulates. Clean as often as the grease requires to stay within the standard, and no more often than that.
We set your cleaning frequency on the evidence - your cooking volume, the standard, and the grease your system actually accumulates - so you clean as often as you need, and no more.
