Chimney cleaning at home: what is safe and what never to touch

You can safely handle three things on a kitchen chimney: the oil collector cup, the filters, and the outer body and hood underside. Everything else — the blower wheel, the motor housing, the wiring, the duct run and the auto-clean heating element — should stay closed. That line is not about protecting a warranty. It is about not spraying water at a live motor sitting directly above a gas flame.

Before anything else: switch the chimney off at its socket or at the MCB, and close the gas at the cylinder regulator or the pipeline valve. Both take five seconds and both matter, because a chimney is the one appliance in the house you clean while leaning over an ignition source.

What is safe to do yourself

Empty the oil collector cup. Every two to three weeks in a house that fries and does tempering daily. It slides or clips out. Empty it into a bin — not down the sink, where hot oil solidifies in the trap — wash it with dishwashing liquid, dry it, and put it straight back. Running the chimney without the cup sends oil into places you cannot reach.

Wash baffle filters. They release with a spring catch or a small latch. Soak 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 completely before refitting. A wet filter puts moisture next to the blower.

Wash mesh or cassette filters gently. Same soak, softer brush, and no caustic cleaner. Aluminium mesh corrodes.

Wipe the hood and the underside. A cloth with warm soapy water, or a kitchen degreaser sprayed onto the cloth rather than onto the chimney. Spraying directly means liquid runs into the filter opening and towards the motor.

Run the auto-clean cycle if the model has one, roughly weekly, and empty the cup afterwards.

What never to touch

• Never spray water, degreaser or steam into the motor housing or the blower opening. Water and grease-cutting chemicals reaching the windings or the capacitor cause a short or a seized motor. This is the single most expensive mistake people make with a chimney.
• Never remove the blower wheel yourself. It is fitted to a shaft, it has to come off and go back in balance, and the sheet metal edges are sharp.
• Never open the electrical cover or the control panel. Even switched off at the wall, that is not a place for a kitchen screwdriver.
• Never clean with the gas on. Cloths, loose clothing and oil-soaked filters above a live burner are a fire waiting for a reason.
• Never pour water onto a hot auto-clean plate. Let the unit cool first.
• Never stand on the hob or the slab to reach the chimney. Use a proper stool on the floor, or leave it.

The gas line deserves its own paragraph

Many kitchens run the LPG hose from the regulator up past the hob, and it often passes close to the chimney body and its power point. Check three things every few months: the hose is not touching a hot surface, it is not cracked or sticky with old grease, and it is within its replacement date. If the hose runs where the chimney's heat or oil drip reaches it, that is worth moving. Pipeline gas installations have a valve near the hob — know where it is.

If you ever smell gas, do not switch anything on or off, including the chimney. Open the windows, close the regulator, and step out.

When it stops being a cleaning job

Call a technician if suction is still weak after clean filters, if the unit hums but the fan is slow or will not start, if you see or smell burning, if oil is dripping from the hood despite an empty cup, or if the chimney trips the MCB. All of those live behind the covers you should not be opening.

A deep clean of motor, fan and filters is ₹499 on our rate card. A filter swap, baffle or mesh, is ₹699. Parts are charged at MRP and shown to you before they are fitted, so you approve the cost before any work starts.

Keeping to the safe list is not a small contribution. Filters washed on time and a cup that never overflows are most of what decides whether a chimney lasts eight years or four.