Rooms · reference
Air Purifier for a Living Room: What Size You Need
The living room is usually the largest furnished space in the home. Between the 300 and 400 sq ft rows that minimum is 260 cfm.
Updated 25 Oct 2026
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The Room & Filter Blog
Daily research notes on air purifier sizing, filters and indoor air, every claim measured against the published EPA CADR table. No marketing numbers, ever.
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Rooms · reference
Air Purifier for a Home Office: What Size You Need
A home office is usually the smallest room you will size, and the arithmetic is short. Anything up to the 200 sq ft row takes 130 cfm.
Updated 25 Oct 2026
ReadRooms · reference
Air Purifier for an Apartment: What Size You Need
The flat is not the room. EPA’s minimums are published per room, so the sizing question is always "which room is this unit standing in?".
Updated 25 Oct 2026
ReadRooms · reference
Air Purifier for a Dorm Room: What Size You Need
A dorm room is the smallest sizing job on the site. Around 100 square feet, it sits on the smallest published row: 65 cfm at an 8-foot ceiling.
Updated 25 Oct 2026
ReadRooms · reference
Air Purifier for a Garage Workshop: What Size You Need
A working garage zone between the 400 and 600 sq ft rows takes 390 cfm, the table’s last published minimum. The arithmetic is ordinary.
Updated 25 Oct 2026
ReadRooms · reference
Air Purifier for an Open-Plan Space: What Size You Need
An open-plan zone between the 500 and 600 sq ft rows takes 390 cfm, the largest minimum EPA publishes, at an 8-foot ceiling.
Updated 25 Oct 2026
ReadRooms · reference
Air Purifier for a Rented Flat: What Size You Need
Size the room the unit stands in, as always: a rented flat’s main room between the 200 and 300 sq ft rows takes 195 cfm at an 8-foot ceiling.
Updated 25 Oct 2026
ReadRooms · reference
Air Purifier for a Loft Conversion: What Size You Need
A loft conversion between the 200 and 300 sq ft rows takes a published minimum of 195 cfm, measured, like every row, against an 8-foot ceiling.
Updated 25 Oct 2026
ReadRooms · reference
Air Purifier for a Spare Room: What Size You Need
A spare room sizes like any bedroom: between the 100 and 200 sq ft rows, the published minimum is 130 cfm at an 8-foot ceiling.
Updated 25 Oct 2026
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