Made for India
← All FAQ categories

CADR, ACH and airflow

The numbers behind clean-air delivery.

100 answers

What is CADR?+

Clean Air Delivery Rate — the volume of filtered air produced per hour. Kevelin Breath is rated 200 m³/h.

What is ACH?+

Air changes per hour. In a 15 m² room with standard ceiling height, 200 m³/h gives roughly 5 air changes an hour.

How many air changes do I need?+

Four to five per hour is a good target for bedrooms; allergy sufferers often prefer more.

Does higher CADR mean louder?+

Higher speeds move more air and make more noise, but the unit stays under 53 dB(A) even at Turbo.

What air-change rate do I get in a small bedroom?+

In a small bedroom at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a master bedroom?+

In a master bedroom at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a nursery?+

In a nursery at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a kids' room?+

In a kids' room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a study?+

In a study at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a home office?+

In a home office at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a living room?+

In a living room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a studio apartment?+

In a studio apartment at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a 1BHK hall?+

In a 1BHK hall at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a guest room?+

In a guest room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a rented PG room?+

In a rented PG room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a hostel room?+

In a hostel room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a shared flat room?+

In a shared flat room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a sick room?+

In a sick room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a work-from-home cabin?+

In a work-from-home cabin at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a reading nook?+

In a reading nook at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a home gym?+

In a home gym at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a yoga room?+

In a yoga room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a meditation room?+

In a meditation room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a puja room?+

In a puja room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a walk-in closet?+

In a walk-in closet at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a dressing room?+

In a dressing room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a dining area?+

In a dining area at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a dining room?+

In a dining room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a basement room?+

In a basement room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in an attic room?+

In an attic room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a salon corner?+

In a salon corner at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a clinic waiting corner?+

In a clinic waiting corner at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a small shop counter?+

In a small shop counter at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a boutique office cabin?+

In a boutique office cabin at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a recording corner?+

In a recording corner at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a gaming setup?+

In a gaming setup at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in a baby feeding corner?+

In a baby feeding corner at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

What air-change rate do I get in an elderly parent's room?+

In an elderly parent's room at typical size, 200 m³/h gives roughly 4–6 air changes an hour on higher speeds.

Should I raise the speed while sleeping?+

Yes — while sleeping, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed while working from home?+

Yes — while working from home, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed during online classes?+

Yes — during online classes, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed while cooking?+

Yes — while cooking, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed just after cooking?+

Yes — just after cooking, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed during a party?+

Yes — during a party, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed while painting a room?+

Yes — while painting a room, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed during renovation?+

Yes — during renovation, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed in monsoon humidity?+

Yes — in monsoon humidity, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed during Diwali week?+

Yes — during Diwali week, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed during winter smog?+

Yes — during winter smog, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed on a high-AQI day?+

Yes — on a high-AQI day, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed when windows must stay open?+

Yes — when windows must stay open, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed in a ground-floor flat on a main road?+

Yes — in a ground-floor flat on a main road, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed in a top-floor flat?+

Yes — in a top-floor flat, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed in an old building?+

Yes — in an old building, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed in a newly built flat?+

Yes — in a newly built flat, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed with a pet cat?+

Yes — with a pet cat, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed with a pet dog?+

Yes — with a pet dog, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed with two pets?+

Yes — with two pets, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed with a newborn at home?+

Yes — with a newborn at home, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed with elderly parents at home?+

Yes — with elderly parents at home, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed in a shared flat?+

Yes — in a shared flat, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed in a PG room?+

Yes — in a PG room, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed while moving between homes?+

Yes — while moving between homes, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed during a house move?+

Yes — during a house move, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed in a smoking household?+

Yes — in a smoking household, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed near a construction site?+

Yes — near a construction site, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed near a busy junction?+

Yes — near a busy junction, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed near a garbage point?+

Yes — near a garbage point, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed during pollen season?+

Yes — during pollen season, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

Should I raise the speed during a dust storm?+

Yes — during a dust storm, run High or Turbo for 20–30 minutes, then drop back to Auto or Sleep.

How quickly does it clear PM2.5?+

Most of the airborne PM2.5 in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear PM10?+

Most of the airborne PM10 in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear ultrafine 0.3-micron particles?+

Most of the airborne ultrafine 0.3-micron particles in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear construction dust?+

Most of the airborne construction dust in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear road dust?+

Most of the airborne road dust in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear house dust?+

Most of the airborne house dust in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear dust-mite debris?+

Most of the airborne dust-mite debris in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear pollen?+

Most of the airborne pollen in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear mould spores?+

Most of the airborne mould spores in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear pet dander?+

Most of the airborne pet dander in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear pet hair?+

Most of the airborne pet hair in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear cooking smoke?+

Most of the airborne cooking smoke in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear deep-fry odours?+

Most of the airborne deep-fry odours in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear tadka smoke?+

Most of the airborne tadka smoke in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear incense smoke?+

Most of the airborne incense smoke in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear mosquito-coil smoke?+

Most of the airborne mosquito-coil smoke in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear candle soot?+

Most of the airborne candle soot in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear cigarette smoke?+

Most of the airborne cigarette smoke in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear vehicle exhaust?+

Most of the airborne vehicle exhaust in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear diesel soot?+

Most of the airborne diesel soot in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear industrial haze?+

Most of the airborne industrial haze in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear stubble-burning smoke?+

Most of the airborne stubble-burning smoke in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear firecracker smoke?+

Most of the airborne firecracker smoke in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear paint fumes?+

Most of the airborne paint fumes in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear new-furniture off-gassing?+

Most of the airborne new-furniture off-gassing in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear formaldehyde?+

Most of the airborne formaldehyde in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear cleaning-product fumes?+

Most of the airborne cleaning-product fumes in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear damp musty odours?+

Most of the airborne damp musty odours in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear garbage odours?+

Most of the airborne garbage odours in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.

How quickly does it clear airborne droplets?+

Most of the airborne airborne droplets in a correctly sized room clears within 20–40 minutes on a high speed, assuming the source has stopped.