A:Answer Hi there, this is Krystal with Dyson. Thank you for your interest in the Dyson Pure Cool Link. The Dyson Pure Cool Link purifier fan will clean the air in any size room. The bigger the room, the longer the machine will take to purify it as there is more air in the room. In a room of 139ft², the purifier fan will purify the room in 27 minutes. In a smaller room, it will take less time to purify the air; in a bigger room, it will take longer to purify the air.
Best Wishes,
Krystal
Dyson Customer Service