Windmill Air Conditioners and Purifiers: Which One Fits Your Room

By Simone Ellery · Updated 2026-10-01T17:02:05.612Z · How we choose · How we make money

We may earn a commission if you buy through links on this page, at no extra cost to you. Our picks are based on the data shown, not on what pays us.

The Windmill AC

$289.00 tracking this price over 12 days · 14 readings

Pros

• Covers up to 250 sq ft
• Rated 4.8
• Priced at $289.00, $21.00 more than The Windmill Air Purifier and $230.00 more than The Windmill Fan

Cons

• No price history is available for this unit

Who it's for: Anyone needing a window air conditioner for a room up to 250 sq ft who wants a furniture-like look and a quick install.

Check price at windmillair.com

The Windmill Air Purifier

$268.00 tracking this price over 12 days · 14 readings

Pros

• Covers up to 202 sq ft
• Runs at just 16 dB for quiet operation
• Rated 4.9 by users
• Compact 9.5 x 9.5 x 16 inch, 7 lb body with a 6-foot cord

Cons

• At $268.00, it costs $110.00 less than the Air Purifier Max but $209.00 more than the Windmill Fan

Who it's for: Anyone wanting a quiet, highly rated purifier for rooms up to 202 sq ft.

Check price at windmillair.com

The Windmill Air Purifier Max

$378.00 tracking this price over 12 days · 14 readings

Pros

• Covers 442 sq ft, the largest coverage in the lineup
• 16 dB noise rating for quiet operation
• Rated 4.9 by reviewers

Cons

• At $378.00 it is the priciest of the four, $89.00 more than The Windmill AC and $110.00 more than The Windmill Air Purifier
• Weighs 21 lb, the heaviest listed

Who it's for: Anyone needing to clean the air in a large room who will trade a higher price and heavier unit for 442 sq ft of coverage and a 4.9 rating.

Check price at windmillair.com

The Windmill Fan

$59.00 tracking this price over 12 days · 14 readings

Pros

• At $59.00 it is the cheapest of the four listed products, $230.00 less than The Windmill AC
• Rated 4.9 by reviewers
• Quiet at 18 dB and light at 2.5 lb, with a 5-foot-11-inch cord and 120 V outlet

Cons

• Only 1 speed
• 111 CFM airflow is the same as the larger, heavier Air Purifier Max

Who it's for: Anyone who wants a small, quiet, inexpensive fan and does not need multiple speed settings.

Check price at windmillair.com

How we chose

How we chose

We matched each unit's coverage, noise, airflow and price to the job of cooling or cleaning a room. The Windmill AC covers 250 sq ft at $289.00 and is rated 4.8. For air cleaning, the Windmill Air Purifier covers 202 sq ft at $268.00 and runs at 16 dB, and the Windmill Air Purifier Max covers 442 sq ft at $378.00, also at 16 dB, with 111 CFM of airflow. The Windmill Fan moves 111 CFM at 18 dB and costs $59.00.

Price separates these clearly. The Windmill AC costs $21.00 more than The Windmill Air Purifier, and the Purifier Max costs $89.00 more than the AC. The AC costs $230.00 more than the Fan, and the Purifier costs $209.00 more than the Fan. The Purifier Max costs $110.00 more than the Purifier and $319.00 more than the Fan.

Coverage and airflow decided it for us: 250 sq ft for cooling, 202 or 442 sq ft for cleaning, and 111 CFM where air movement matters.

Who should skip these

If your main problem is heat, the purifiers are not the answer. The Windmill Air Purifier covers 202 sq ft and the Purifier Max covers 442 sq ft, but neither one cools a room.

If you only need air cleaning, skip the Windmill AC. It covers 250 sq ft at $289.00, and that money goes toward cooling you don't need. The Air Purifier is $21.00 less at $268.00, and the Purifier Max is $89.00 more at $378.00.

The Windmill Fan is the cheapest way to move air: $59.00, which is $230.00 less than the AC, $209.00 less than the Air Purifier, and $319.00 less than the Purifier Max. It has one speed, so if you want adjustable airflow, look elsewhere in the lineup.

How to choose the right one

Start with coverage. The Windmill AC is rated for 250 sq ft, the Windmill Air Purifier for 202 sq ft, the Purifier Max for 442 sq ft, and the Windmill Fan lists no coverage figure. If you are cooling a room, the AC is the only one of these that does it. If you want air cleaning, match the room to 202 sq ft or 442 sq ft.

Then weigh noise and airflow. Both purifiers run at 16 dB; the Windmill Fan runs at 18 dB. The Purifier Max and the Windmill Fan both move 111 CFM. The Windmill AC lists no noise or airflow figure.

Finally, look at the gaps. The Windmill AC costs $21.00 more than The Windmill Air Purifier, and the Purifier Max costs $89.00 more than the AC. The Purifier Max costs $110.00 more than the Air Purifier. The Windmill Fan is the least expensive at $59.00 — $230.00 less than the AC, $209.00 less than the Air Purifier, and $319.00 less than the Purifier Max.

Questions readers ask

By Simone Ellery · Published 2026-09-21 · Updated 2026-10-01