Indian cooking is hard on a kitchen. Tadka, deep frying, roasting masalas and making rotis on an open flame all throw oil, smoke and spice fumes into the air. Without a chimney, that grease settles on cabinets, tiles and ceilings, and the kitchen stays hot and smoky. A good chimney fixes most of this, but only if you choose the right suction, filter, size and installation.
1. Suction power (m³/hr)
Suction is how much air the chimney can pull in an hour, measured in cubic metres per hour (m³/hr). Higher suction clears smoke faster, but it also usually means more noise and higher cost.
As a rough guide only:
| Kitchen and cooking style | Suction to start looking at |
|---|---|
| Small kitchen, mostly boiling, steaming, light sabzi | Around 700–1,000 m³/hr |
| Average kitchen, daily tadka and some frying | Around 1,000–1,200 m³/hr |
| Larger or open kitchen, heavy frying, grilling, non-veg, joint family cooking | Around 1,200 m³/hr and above |
Some things matter as much as the number on the box:
- Duct length and bends: every metre of duct and every bend reduces the real suction. A short, straight duct with few bends helps a lot.
- Kitchen layout: open kitchens and kitchens with a window right next to the hob (where wind blows smoke sideways) need more.
- Published figures are measured under test conditions. Real-world performance in your kitchen will usually be lower.
A simple rule of thumb some people use is to aim for enough suction to change the air in the kitchen several times an hour. Measure your kitchen (length x width x height in metres) for a rough volume, but treat it as a guide, not a formula.
2. Filter type
| Filter | How it works | Good for | Watch out for |
|---|---|---|---|
| Mesh (cassette) | Layers of aluminium mesh catch oil | Light cooking; lower cost | Clogs quickly with oily Indian cooking, reducing suction; needs washing often |
| Baffle | Curved metal panels make the air change direction, so oil drops out | Daily tadka and frying | Needs washing regularly; heavier panels |
| Filterless | No filter panel; oil is separated inside and collected in a cup or tray | Heavy oily cooking; less frequent hand-washing | Usually costs more; oil collector needs emptying; inside still needs occasional servicing |
| Carbon (charcoal) | Absorbs smells; used in ductless (recirculating) chimneys, usually alongside another filter | Kitchens where a duct to the outside isn’t possible | Can’t be washed; needs replacing periodically |
For most Indian homes, baffle or filterless chimneys are the practical choice. Mesh filters work, but they fill up with grease quickly and need far more frequent cleaning to keep the suction up.
3. Ducted vs ductless
- Ducted: a pipe takes the smoke, heat and moisture outside through a wall or window. This is the most effective option for Indian cooking because it removes heat and fumes from the kitchen entirely.
- Ductless (recirculating): the chimney filters the air through carbon and blows it back into the kitchen. It removes some grease and smell, but not heat or moisture, and the carbon filter needs replacing.
Choose ducted whenever you can make a hole to the outside. In rented flats or kitchens with no external wall, ductless is better than nothing.
4. Size: match the hob
The chimney should be at least as wide as your cooktop, and slightly wider is better, so it catches smoke from the outer burners.
| Hob | Chimney width |
|---|---|
| 2–3 burners, standard width | 60 cm |
| 3–4 burners or a wide hob | 90 cm |
If you’re planning a new kitchen, decide the hob first, then the chimney.
5. Style
- Wall-mounted (pyramid, T-shape or curved glass): the most common, for a hob against a wall.
- Island: hangs from the ceiling over a hob in the middle of the room. Needs more suction because smoke escapes from all sides.
- Built-in or integrated: hidden inside a cabinet for a cleaner look. Check access for cleaning and servicing.
6. Auto-clean
Many chimneys advertise auto-clean. Usually this means a heating element warms the blower area so oil melts and drips into a collector. It reduces build-up inside, which helps with Indian cooking, but it isn’t a replacement for cleaning. You still need to empty the oil collector, wipe the body and clean the filters (if it has them).
7. Installation height
The gap between the hob and the bottom of the chimney affects both suction and safety. Too high and it misses smoke; too low and it can get in the way or be exposed to too much heat from the flame. Follow the manufacturer’s recommended height for your model and your type of hob (gas and induction can differ). The installer should also check the duct route, the wall’s strength and that there’s a properly earthed power socket nearby.
8. Noise
Chimneys can be loud at full speed. Manufacturers often publish a noise figure in decibels (dB); compare these across models you’re considering, ideally at the highest speed, which is when you’ll notice it most. Remember that a higher suction model running at a lower speed can be quieter than a smaller one running flat out.
9. Controls and other features
- Touch or gesture controls are easier to wipe clean than push buttons.
- Multiple speeds let you run it gently for simmering and at full speed for tadka.
- Lights over the hob are useful; check the bulbs are easy to replace.
- Auto shut-off or delay timer keeps it running for a few minutes after cooking to clear the last of the smoke.
10. Service and maintenance
A chimney is a long-term purchase, so check service availability in your area, the warranty on the motor (often longer than on the rest), and the cost of annual servicing. Even a good chimney performs badly when it’s clogged with grease.
Clean washable filters regularly (how often depends on how much you fry), empty oil collectors, and wipe the body with a mild soap solution. For more grease-cutting tips, see our Indian kitchen hacks. If you’re also choosing a hob, our gas stove vs induction comparison covers that decision.
Bottom line
For Indian cooking, choose a ducted chimney where you can, with baffle or filterless filtration, at least as wide as your hob, and suction suited to your kitchen and cooking (roughly 1,000 m³/hr or more for daily tadka and frying). Keep the duct short and straight, install it at the height the manufacturer recommends, and make sure you can get it serviced locally.
Frequently asked questions
How much suction power does a kitchen chimney need for Indian cooking?
As a rough guide, many smaller kitchens with light cooking manage with around 700 to 1,000 m³/hr, while kitchens with daily tadka, frying and grilling often look at 1,000 to 1,400 m³/hr or more. Kitchen size, duct length and bends all affect how much suction you actually get, so treat these as starting points.
Which is better: a baffle or a filterless chimney?
Both suit Indian cooking. Baffle filters trap oil well and are washable but need regular cleaning. Filterless chimneys have no filter panel to clean, but still collect oil in a cup or tray that needs emptying, and the inside still needs occasional servicing. Mesh filters clog fastest with oily cooking.
What size chimney should I buy?
Match the chimney to your hob: it should be at least as wide as the cooktop, ideally a little wider. Broadly, a 60 cm chimney suits a 2 or 3-burner hob and a 90 cm chimney suits a 3 or 4-burner or wider hob.
Does auto-clean mean I never have to clean the chimney?
No. Auto-clean usually heats the inner parts so oil drips into a collector, which reduces build-up. You still need to empty the oil collector, wipe the outside, and clean or service filters and the inside from time to time.
