How to Clean a Kitchen Chimney: 7 Easy Ways to Cut Through Grease

Unplug the chimney first. Then take the filters out and drop them into a tub of really hot water with 2–3 spoons of baking soda and a squeeze of dish soap. An hour is usually enough (give it two if you haven't cleaned in months). Scrub, rinse, dry. While that soaks, foam-spray the hood and empty the oil cup.

1. Turn the chimney off at the wall socket and let it cool
2. Take the filters out and soak them in hot baking soda water
3. Spray the hood and tiles with foam cleaner and wipe
4. Scrub, rinse and dry the filters completely
5. Empty the oil collector, then put everything back

If your chimney hums louder than it used to and the kitchen still smells of last night's tadka, the filters are probably full. That's normal. Indian cooking throws a lot of oil into the air, and catching it is the chimney's whole job. The trouble starts when nobody cleans what it catches. Pakoras on a rainy evening, puris on Sunday, jeera tadka every single day.

Each one leaves a thin film behind, and a month later that film has turned brown and sticky. Now the motor has to work harder to pull the same air through. Suction drops, smoke hangs around, and eventually the hood starts to drip. So here's what actually works for how to clean kitchen chimney filters and the hood at home, which method suits which kind of grease, and a couple of popular tips we would skip.

First, Check What Kind of Filter You Have

Before you touch any cleaner, unplug the chimney (the switch on the wall, not just the touch panel) and give it ten minutes to cool. Then pull out a filter and actually look at it. Most Indian chimneys use one of three setups. Baffle filters are the thick, curved panels, usually stainless steel. Mesh or cassette filters are layers of thin aluminium net, common in older and budget models. Filterless or auto-clean chimneys have no front filter at all, and the oil runs into a small cup or tray instead.

Why does this matter? Because aluminium and caustic soda don't get along, and plenty of guides online recommend caustic soda without ever saying so. If the filter feels surprisingly light in your hand, it's probably aluminium. The manual will tell you for sure.
One more quick check. Run your fingernail across the filter. If it's soft and sticky and leaves a groove, a soak will handle it. Hard, dark, almost like varnish? You'll need the paste or something stronger.

How to Clean Grease from Chimney Filters: 7 Ways That Work

1. The Hot Water and Baking Soda Soak

Start with this one. Most of the time, it's all a home chimney really needs. Run the geyser till the water is properly hot, fill the sink (or a big plastic tub if the filters don't fit), and stir in 2–3 tablespoons of baking soda with about a tablespoon of dish soap. Then push the filters under. They tend to float, so put a steel plate or a heavy bowl on top. Then just walk away for an hour. Make chai, finish something else.

If it’s been months since the last clean, give it two. When you come back, the water will look pretty gross, kind of murky brown. Good. That’s the grease that came off. Baking soda is mildly alkaline, which loosens the fat, and the hot water softens whatever is left so the soap can do its job. Now take a soft nylon brush and go along each baffle. For the corners, an old toothbrush works better than any fancy brush we’ve tried. Rinse under the tap, lean the filters against the wall and let them drip-dry.

2. Vinegar Spray, While the Grease Is Still Fresh

Not every clean needs the full soak. If the filters got a proper wash last month and it’s just been a heavy week of cooking, a vinegar spray is plenty. Fill a spray bottle with half white vinegar, half warm water. Spray it over the filter and the hood, then leave it for about 15 minutes before wiping it off with a microfibre cloth.

Bonus: it also kills that stale tadka smell that hangs around the hood. Just be careful if there’s marble or Kota stone under the chimney. Vinegar is acidic, and a few drops on stone can leave dull patches that don’t buff out.

3. A Quick Soapy Wipe Every Week

Honestly, this habit saves more effort than any trick on this list. Five minutes with a sponge and warm soapy water on the hood, the control panel and the underside of the filters, and the big clean comes around far less often. Keep steel wool away from steel or glass hoods. The tiny scratches it leaves end up holding on to grease.

4. Foam Cleaner for the Hood, Panels and Tiles

You can't soak the outside of a chimney. And if you've ever sprayed a liquid cleaner on a vertical hood, you know what happens next: it runs straight down onto the stove before it has done anything. Foam stays put. A foam-based kitchen cleaner spray sits on glass and steel long enough to loosen the oil, so the job is spray, wait a minute, wipe. No bucket. We use it on the hood, the tiles behind the gas and around the switches. Spray onto the surface or your cloth, though, never into the vents or the touch panel.

5. Baking Soda Paste for the Stubborn Bits

Even after a good soak, a few spots usually refuse to come off. It’s almost always the corners and those folded edges on the baffles, where the grease has had months to harden. For these, make a thick paste: three spoons of baking soda to one spoon of water, roughly the texture of toothpaste. Smear it right on the dark patches and walk away for 15–20 minutes.
Then scrub with a nylon brush. The paste is just gritty enough to do the work, and it won’t scratch your steel. One thing people miss: rinse it off properly. Dried baking soda leaves a white, chalky haze, and trust us, it looks worse than the grease did.

6. Caustic Soda, Only When Nothing Else Has Worked

We'll be straight with you about this one. Caustic soda really does dissolve grease that's been sitting for months, which is why so many older blogs swear by it. It's also corrosive enough to burn skin, and it eats into aluminium. So it's for stainless steel baffle filters only, and only as a last resort.

1. Gloves, eye protection and open windows, every single time
2. Put the filter in a plastic tub, sprinkle a small amount of caustic soda over it, then slowly pour hot water on top
3. Always add the chemical into water, never water onto the chemical
4. Leave it for an hour, then rinse very, very thoroughly

Don't let it anywhere near a painted or glass hood. If you aren't comfortable handling it, a chimney service visit is money well spent.

7. Auto-Clean Mode and the Oil Collector

Auto-clean chimneys heat up inside so the grease melts and drains into a collector. It works. What it doesn't do is empty that collector, and a lot of people forget it exists until oil starts dripping onto the stove. After the cycle, pull out the oil cup, pour the old oil into a sealed packet or container and put it in the dustbin. Not the sink. Cooking oil hardens inside pipes, and you'll be calling a plumber next. Wash the cup in warm soapy water, dry it and slide it back in.

Which Method Should You Pick?

Short version: let the grease decide.

Should You Mix Baking Soda and Vinegar?

No, and this is probably the most repeated chimney tip on the internet. Lots of DIY videos pour both into one bucket because the fizz looks like it's working hard. Here’s what’s actually happening in that bucket. Vinegar is an acid, baking soda is an alkali, and when you mix them they mostly neutralise each other. The fizz is just the two reacting. 

What’s left behind is basically salty water, and it cleans worse than either one would have on its own. So don’t mix them. Use them one after the other. Soak in baking soda first, rinse, and then finish with the vinegar spray.

While You're at It: How to Clean the Burner of a Gas Stove

Grease doesn't only go up. Plenty of it lands on the hob, and if your flame has turned yellow or patchy, the burner holes are probably blocked. Here's how to clean the burner of gas stove parts without damaging them. Shut the gas at the cylinder regulator first and let everything cool. Lift off the caps and the brass burner heads and drop them into warm water with dish soap and a tablespoon of baking soda for 20 to 30 minutes. Scrub with an old toothbrush, then clear each hole with a safety pin. 

Not a toothpick; they snap off and get stuck. Brass that's gone dark comes back nicely with half a lemon dipped in salt. The part people rush is drying. Every piece needs to be completely dry before it goes back, because a damp burner lights badly and the flame stays weak.

How Often Should You Clean Your Kitchen Chimney?

There's no fixed date for it. It depends on how much you fry. If your kitchen does daily tadka and regular frying, wash the filters every two weeks. Lighter, everyday home cooking can stretch that to three or four weeks. Plan a proper deep clean of the hood and inside surfaces every three months, and have a technician look at the motor and duct once a year.

Two small habits make a big difference. Switch the chimney on before the oil goes into the kadhai, not after the smoke starts. And leave it running for a couple of minutes after you've turned off the gas.

Home Remedies or a Foam Cleaner?

Both, really. Baking soda and vinegar are cheap and do a good job on anything you can drop into a tub. Where they struggle is the hood, the tiles and the hob, because you can't soak a wall. That's the gap foam fills. It clings, needs no mixing, and turns the whole job into spray and wipe. If you're shopping for one, take a look at our range of the best foam cleaner options for kitchen and home surfaces.

Final Thoughts

So that’s really all there is to how to clean kitchen chimney grease at home with Wipezy. You don’t need ten different products. Look at how bad the grease is and go from there. A thin film? A quick foam spray or a bit of vinegar will do. The usual monthly mess goes in the hot baking soda soak. And caustic soda? Honestly, most homes never need it. 

Keep it for steel filters that nothing else has fixed.The bigger win is the boring stuff. A five-minute wipe every Sunday and clean burners once in a while, and your chimney keeps pulling smoke the way it did the day the technician fitted it.

Frequently Asked Questions

Q1. Can I put chimney filters in the dishwasher? 

A. Most stainless steel baffle filters are fine in a dishwasher. Aluminium ones can turn dark grey, so check the manual first.

Q2. Why is my chimney dripping oil?

A. Almost always because the filters are saturated or the oil cup is full. Clean both and it should stop.

Q3. When is it time to replace a filter instead of cleaning it?

A. When the mesh is torn or bent, or when it's still greasy after a long soak and a paste scrub.

Q4. Can I clean the chimney motor myself?

A. Please don't. The motor and wiring are a technician's job. Stick to the filters, the oil cup and the outside.