Kitchen chimney suction: how many m³/hr do you need?
People search this as “how much suction power chimney for Indian kitchen m3/hr” · updated 2026-08
Short answer
Calculate kitchen volume in cubic metres and multiply by 10-12 air changes per hour, then round up. For typical Indian frying and tadka, a 1,200 m³/hr chimney suits most kitchens up to about 200 sq ft, and 1,500 m³/hr suits larger or open kitchens. Ducted always outperforms ductless recirculation.
- Indian cooking produces far more oil vapour than Western cooking — do not undersize.
- Ductless (charcoal filter) chimneys only trap smell; they do not remove heat or moisture.
- Filterless / auto-clean chimneys need much less maintenance than baffle filters.
Suction by kitchen size
| Kitchen | Suction | Chimney width |
|---|---|---|
| Up to 100 sq ft, 2 burners | 1,000-1,200 m³/hr | 60 cm |
| 100-200 sq ft, 3-4 burners | 1,200-1,400 m³/hr | 60-90 cm |
| Open kitchen / heavy frying | 1,500 m³/hr+ | 90 cm |
Installation rules people ignore
- Mount 65-75 cm above the cooktop — higher loses suction, lower risks heat damage.
- Chimney width should be at least as wide as the hob.
- Keep the duct run short and with as few bends as possible; every bend costs suction.
- Noise: 58-65 dB is normal, below 55 dB is considered silent.
Common follow-up questions
Auto-clean or baffle filter?
Auto-clean collects oil in a removable bowl and needs only an occasional wipe. Baffle filters cost less but must be scrubbed every few weeks in an Indian kitchen.
Go deeper with the full guide
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