How to Clean a Kitchen Chimney at Home (Step by Step)

To clean a kitchen chimney at home: switch it off at the socket, remove the filters, soak them in hot water with baking soda and dish soap for 20–30 minutes, scrub with a soft brush, dry fully and refit. Wipe the hood and empty the oil collector. That covers everything you can safely reach — the blower housing and ducting need a professional.

Key takeaways

• Always switch off at the socket first. Not just the control panel.
• Hot water + baking soda + dish soap does the job. No harsh acid needed.
• Filters must be completely dry before refitting.
• Mesh filters: every 2–4 weeks. Baffle: every 2–3 months. Auto-clean collector: monthly.
• You cannot reach the blower housing or duct — that needs professional cleaning yearly.

What you will need

• A basin or sink large enough to lay filters flat
• Hot water, baking soda, dish soap (white vinegar optional)
• A soft brush or old toothbrush — not a wire brush
• Rubber gloves and a microfibre cloth
• Newspaper or an old towel for the floor

Step by step

Step 1 — Switch off at the socket

Turn the chimney off at the wall socket, not just at the control panel. You will be handling metal parts near an electrical appliance. Let it cool if it has been running.

Step 2 — Remove the filters

Most filters release with a latch or clip on the underside. Support the filter as it comes free — they are heavier than they look once loaded with oil, and dropping one on a glass hob is an expensive mistake. Lay newspaper underneath first.

Step 3 — Soak

Fill a basin with hot water, add two to three tablespoons of baking soda and a good squeeze of dish soap. Lay the filters flat and fully submerged. Leave 20–30 minutes. Heavily loaded filters benefit from an hour.

Baking soda works because it cuts through congealed fat without corroding aluminium. Strong acidic descalers can pit the metal — avoid them.

Step 4 — Scrub

Work along the grooves with a soft brush. Baffle filters need attention in the curved channels where oil collects. Mesh filters need the brush worked through the layers, which is the tedious part. Re-soak and repeat rather than scrubbing harder if it is not shifting.

Step 5 — Rinse and dry completely

Rinse thoroughly — leftover soap attracts fresh grease. Then dry fully. This matters more in Kolkata than the instruction manuals convey: refitting a damp filter in a humid kitchen traps moisture against metal and encourages corrosion. Air-dry for a few hours if you can.

Step 6 — Empty the oil collector

If you have an auto-clean or filterless chimney, detach the collector bowl, pour off the oil (into a container for disposal, not down the sink — it solidifies in the trap), and wash with the same hot soapy water.

Step 7 — Wipe the hood

Clean the underside and visible internal surfaces with a cloth and warm soapy water. Do not spray liquid directly upward into the unit — you do not want it reaching the motor or wiring.

Step 8 — Refit and test

Refit the dry filters, making sure latches engage properly. A badly seated filter rattles. Switch back on and run each speed briefly to check.

What you cannot clean yourself

This is the part most home-cleaning guides skip, and it is the reason chimneys still lose suction despite regular filter washing.

Behind the filters sit the blower housing and impeller, and beyond that the ducting. Both accumulate grease steadily, and both are outside what you can safely reach without dismantling the unit. When a chimney has been cleaned at home for years and still feels weak, this is almost always why.

A professional deep clean covers those, plus a suction test afterwards to confirm performance actually returned.

How often, in Kolkata specifically

These intervals are shorter than most manuals state, deliberately. Kolkata’s humidity keeps deposited oil tacky instead of letting it dry and flake off, so it accumulates faster and holds dust. A chimney left to run choked makes its motor work against back-pressure, which is the most common route to premature motor failure — and an AMC costs a fraction of that.

Safety notes

• Never spray water or cleaner into the motor housing.
• Do not use a wire brush or abrasive pad on filters — it damages the surface and speeds up fouling.
• Do not open the housing, motor or control board. That risks electric shock and can void warranty coverage.
• If the chimney is noisy, humming without spinning, or smells of burning, stop and call a technician.

Written by RS, RS Appliances / GITA, the authorised Kutchina dealer and service partner in Kolkata.