Is a budget extraction clean actually cleaning anything?

Often not - a very cheap clean typically does the visible canopy and filters but skips the hidden ductwork, because properly cleaning the ductwork is the expensive part. To be much cheaper than a proper clean, a budget clean cuts the costly work - and the costly work is the ductwork: reaching it (through access panels, sometimes cutting new ones), cleaning the whole system thoroughly, and verifying it (internal inspection, before-and-after photographs, a proper report). A budget clean does instead the quick, easy, visible work (wiping the canopy, cleaning the filters), which makes the visible kitchen look clean and produces an invoice, but leaves the hidden ductwork grease-laden. So a cheap clean often does not clean the ductwork - the very part where the fire risk mainly is. This is not usually stated, so the buyer may not realise: the visible parts look clean and there is an invoice. So the answer is often no - a cheap clean frequently does not clean the ductwork, which is exactly what matters. To be sure, check whether it does the whole system and can prove it (with photographs). This is general commentary.

Because the ductwork is where the grease build-up is most significant and most hazardous - the main fire risk - and where a clean earns its value. Grease builds up throughout an extraction system (filters, canopy, and inside the ductwork), and it is combustible - a recognised cause of serious kitchen fires. The ductwork is where the build-up is most significant and most dangerous: it is enclosed, hard to reach, and runs through the building, so a grease fire in the ductwork can spread rapidly through the system and the building. It is also the hardest part to clean. So the ductwork is the heart of the fire risk, and cleaning it is the heart of controlling that risk. The canopy and filters matter too (and are the first defence), but they are visible and easy to clean - so cleaning them alone, while leaving the ductwork grease-laden, leaves the main fire risk in place. So the ductwork matters more than the canopy because it holds the main fire risk and is what a real clean must address. A clean that does only the canopy misses the point. So the ductwork matters most because it is where the fire risk mainly is. This is general commentary.

A clean invoice but an unclean duct - paying for a 'clean' while keeping the fire risk and a compliance gap. You have an invoice and a visibly clean canopy, so it looks done - but the ductwork is still grease-laden, so the main fire risk remains (the combustible grease is still there, a hazard, as before). So you have spent money and reduced the fire risk very little, while the main risk continues to build. You also have a compliance gap: the system has not been cleaned to standard (TR19 Grease requires the whole system, including the ductwork, cleaned and verified), so despite the invoice, the system is not compliant and the fire risk is not controlled to standard - which shows if a fire risk assessor or insurer looks properly, or if a fire happens. And over time, repeated budget cleans that never do the ductwork are how the 'years of missed cleaning' situation (a heavy build-up behind a history of invoices) arises. So a budget clean that skips the ductwork leaves you with the appearance of compliance and safety, but not the reality - false reassurance while the risk continues. This is general commentary.

By whether it does the whole system (including the ductwork) and proves it - not by the price. A genuine, valuable clean does the whole system: the canopy, the filters, and the ductwork throughout (reaching it via access panels), removing the grease where it matters. And it proves it: with internal inspection, before-and-after photographs of the ductwork, and a proper report and certificate to TR19 Grease - so you can see and evidence that the hidden ductwork was genuinely cleaned. So to tell if a clean is genuine, ask: does it cover the whole system, including the ductwork (or just the canopy and filters)? Is there adequate access (access panels) so the ductwork can be reached? And crucially, can they show you the ductwork was cleaned, with before-and-after photographs of the ductwork internals? If a clean cannot show you the ductwork was cleaned (no photographs, no internal inspection, no mention of the ductwork), it very likely did not clean it. So the test of a genuine clean is whole-system and proven, not cheap - a clean that does the whole system and proves it is genuine; one that cannot show the ductwork was done is not. This is general commentary.

Not necessarily - a budget clean that leaves the ductwork grease-laden can be worse in one important sense, because it gives false reassurance while the fire risk continues. A budget clean does clean the canopy and filters (some small benefit), but if it leaves the ductwork untouched, the main fire risk remains - so it does not control the fire risk (the point of cleaning). Worse, it creates the false impression that the system has been cleaned (there is an invoice, the visible parts look clean), so the operator believes the risk is handled when it is not - and may not arrange a proper clean because they think it is done. So the budget clean can lull you into leaving a growing fire risk unaddressed, believing it is dealt with. In that sense, it can be worse than knowing the system is not cleaned (which would prompt a proper clean). So rather than a budget clean giving false reassurance, it is better to get a proper, whole-system, verified clean - which actually controls the risk. A budget clean is not a safe substitute. So a budget clean that skips the ductwork is not really better than no clean, because of the false reassurance. This is general commentary.

Because it does the expensive, important work a budget clean skips - reaching and cleaning the whole ductwork, and verifying it. A proper extraction clean costs more than a budget canopy wipe because it does the costly, skilled, time-consuming work: reaching the ductwork (through access panels, sometimes cutting new ones so it can be reached), cleaning the whole system thoroughly (canopy, filters and the ductwork throughout), and verifying it (internal inspection, before-and-after photographs, a proper report and certificate). This is where the cost is - and it is exactly the work that controls the fire risk (removing the grease from the ductwork) and provides the proof of compliance. So the higher cost buys what matters: the fire risk genuinely reduced (the ductwork cleaned), the system cleaned to standard (compliance), and the proof it was done. A budget clean is cheaper because it delivers less of this - so its low price is not a saving but a false economy, leaving the risk you were paying to remove. So a proper clean costs more because it does the expensive, important work that actually cleans the ductwork and controls the fire risk. So the cost reflects the real work of controlling the risk. This is general commentary.