How often should a kitchen chimney be cleaned in Nellore?

A kitchen chimney in a Nellore home handles far more oil than the manual writers had in mind. Daily tempering with mustard and curry leaves, deep frying for a weekend, karam podi roasting, fish fry that smokes for a good ten minutes — every one of those sends hot oil vapour straight into the hood. The honest answer is that filters need attention every two to four weeks, the oil collector cup every two to three weeks, and the motor and blower a proper deep clean twice a year.

If your cooking is lighter — mostly rice, curries with a normal tadka, occasional frying — you can stretch the filters to six weeks and the deep clean to once a year. Nothing else in the schedule changes.

The schedule that actually works

What	How often	Who does it
Wipe the hood and outer surface	Weekly	You
Empty the oil collector cup	Every 2–3 weeks	You
Wash baffle or mesh filters	Every 2–4 weeks	You
Run the auto-clean cycle	Weekly	You
Deep clean of motor, blower, duct	Twice a year	Technician

The two-a-year deep clean is the one people skip, and it is the one that decides how long the motor lasts. Grease creeps past the filters no matter which type you own. It builds up on the blades of the blower wheel, unevenly, until the wheel is heavier on one side and the motor is fighting an imbalance every second it runs.

Why Andhra cooking changes the numbers

Oil vapour is the whole problem. Tempering is a short, violent burst of hot oil and spice that atomises easily. Deep frying pushes a steady stream of it for as long as the kadai is on. High-heat frying of fish or chicken adds protein residue to the oil, which bakes into a sticky brown film rather than the softer grease you get from vegetables.

Add Nellore's humidity to that. Damp air makes fresh grease tacky instead of dry, so it grabs kitchen dust and turns into a paste that no ten-minute wipe will shift. Kitchens near main roads or open ground pull in noticeably more of that dust.

Signs you are already overdue

• Smoke from the kadai drifts sideways instead of going up.
• The kitchen still smells of last night's fish the next morning.
• You can see a shine or a brown film on the underside of the hood.
• The chimney sounds louder than it did, or hums at a lower pitch.
• Oil drips from the edge of the hood onto the hob or the slab.
• Cabinet doors near the chimney feel sticky.

Two or more of these together mean the blower is already loaded, not just the filters.

Doing the routine part yourself

Switch the chimney off at the socket or the MCB before you touch anything, and turn the gas off at the cylinder regulator so nothing can light while your hands are above the hob. Let the unit cool if it has just run — an auto-clean heating plate stays hot for a while.

Baffle filters come out with a spring catch or a small latch. Soak them in hot water with dishwashing liquid and a spoon of baking soda for about half an hour, scrub with a soft brush, rinse and dry fully before refitting. Wet filters put moisture where you do not want it.

Mesh or cassette filters are more fragile. Use the same soak but a gentler hand, and skip caustic cleaners entirely — they eat aluminium mesh.

The oil cup lifts out. Empty it, wash it, dry it, put it back. Never leave it out; without it, the oil goes somewhere worse.

Where the line is

Anything past the filter frame is a technician's job. The blower wheel has to come off its shaft to be cleaned properly, and the motor housing must never be washed or sprayed. On our rate card an auto-clean service — motor, fan and filter deep clean — is ₹499. If the suction is already weak and you want the cause found rather than just a clean, that job is ₹499 as well, and it includes checking the duct clearance.

Book the deep clean before a festival stretch of heavy cooking rather than after it. A clean chimney going into that week will still be pulling properly at the end of it.