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Duct cleaning - energy
Your air conditioning and your extraction are not separate systems - they share the same air. When extraction is dirty and struggling, the cooling picks up the slack, and the bill quietly climbs.
The short answer
Extraction and air conditioning both act on the same air in a building, so when extraction is choked with grease or dust, the whole ventilation balance suffers - heat and humidity linger, the cooling runs longer to compensate, and clogged systems draw more power for less effect. Poor extraction therefore shows up not just as a stuffy kitchen but as an inflated air conditioning bill.
They share the same air
It is tempting to think of extraction and air conditioning as separate boxes - one pulls stale air out, the other cools the air that stays. In reality they are two parts of one connected ventilation system, working on the same air in the same space. What happens to one affects the other, because the air removed, replaced and conditioned all has to balance.
That connection is why neglected extraction is quietly an air conditioning problem. When the extraction is not doing its job properly, the consequences do not stay in the ductwork - they land on the cooling system, which ends up compensating for a failure elsewhere in the same loop.
Cost one
The clearest link is heat. Extraction removes the heat that cooking, equipment and occupancy generate; when it is choked and under-performing, that heat lingers in the space instead of leaving. The air conditioning then has to work harder and longer to remove heat the extraction should have taken away at source - cooling a space that is being kept hot by its own failing ventilation.
In a kitchen this is stark: a grease-choked extract that cannot clear the heat of the cookline turns the whole space into a heat load the cooling has to fight. But it applies anywhere extraction and cooling share a space - the less the extract removes, the more the cooling has to.
Cost two
Poor extraction also unbalances the ventilation. If the extract cannot achieve its designed flow because it is choked, the make-up air and cooling are thrown out of balance, and systems fighting an imbalance run inefficiently - drawing power without delivering the intended effect. A system working against itself is a system wasting energy.
The same clogging that afflicts extraction affects the cooling side too. Dust-laden supply ductwork and fouled coils and filters make air conditioning work harder to move and cool air, raising power draw for the same output. Across a building, neglected ventilation ductwork on both the extract and supply sides is a steady, hidden inflator of the energy bill.
Cost three
There is a behavioural cost too. When extraction is failing and a space stays hot, stuffy or humid, the natural response is to turn the cooling up and run it longer - treating the symptom rather than the cause. So poor extraction drives not only the mechanical overwork but the human overuse, with thermostats pushed down and systems left running to overcome a problem cleaning the extraction would solve at source.
That overuse compounds the mechanical cost. The cooling runs harder because it has to, and harder still because people make it, all to compensate for extraction that is not clearing the space as it should. The bill reflects both.
The fix
The efficient response to a hot, stuffy space and a climbing cooling bill is to check the extraction before blaming the air conditioning. Very often the extract is choked with grease or dust and simply not removing the heat and stale air it should - and cleaning it restores the airflow, lets the extraction do its job, and eases the load the cooling has been carrying.
Cleaning both the extract and the supply ductwork keeps the whole ventilation system moving air as designed, so the cooling only has to do its own job rather than the extraction's as well. It is one of the cheaper ways to bring an inflated air conditioning bill back down - because the problem was never really the cooling.
Questions
Extraction and cooling share the same air. When extraction is choked, heat and humidity linger, the cooling runs longer to compensate, and clogged, unbalanced systems draw more power for less effect - inflating the energy bill.
Yes. They are two parts of one ventilation system working on the same air. What the extraction fails to remove becomes a load the cooling has to deal with, so neglect on one side lands on the other.
Extraction should remove heat from cooking, equipment and occupancy at source. When it is choked and cannot, that heat stays in the space and the air conditioning has to work harder and longer to remove it.
Yes. Dust-laden supply ductwork and fouled coils and filters make air conditioning work harder to move and cool air, raising power draw for the same output. Imbalanced systems also run inefficiently.
Yes. A hot, stuffy space from failing extraction leads people to turn the cooling up and run it longer, compounding the mechanical overwork with human overuse - all to overcome a problem cleaning would solve at source.
Check and clean the extraction before blaming the air conditioning. Cleaning choked extract and supply ductwork restores the designed airflow and eases the load the cooling has been carrying - often a cheap way to cut the bill.
We clean extract and supply ductwork so your ventilation works as designed and your cooling stops carrying the slack.
