“How is the sq. ft calculated? (We have 15 foot vaulted ceilings with an open floor plan, single level home. Living room and dining room combined is about 20 x 35.) We live in the country and have to dust daily due to high traffic/pets. Recommendations?”

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• HI there! The square footages are calculated with an 8 foot ceiling. We generally recommend that customers with high ceilings go a model up. 20 x 35 alone is 700sqft so I'd recommend looking at our Pro XL or multiple smaller units.

  Answered by Blueair Support Team 7 years ago

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• Square footage is calculated on a flat plane.

  Answered by CommunityAnswer 7 years ago

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• Length times width times average high The would give you a close enough cubic foot total.This determines what size filter unit to use , be sure to close windows and outside doors so you are not trying to clean the outside air.

  Answered by Steamfitter 6 years ago

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