Windmill for mold defense

Mold spores are in your air. We fix that.

You can't see them, but you might feel them. The stuffy mornings. The lingering must. Air that never quite feels clean. The Air Purifier Max is lab tested to capture 99.95% of common household mold spores in 60 minutes. Independently verified. Not a claim, a result.

Shop the Max · $299
Windmill Air Purifier Max in a bedroom
#1
MOLD CAPTURE
PURIFIER
LAB VERIFIED
99.95%
of household mold captured in 60 min
Lifetime warranty · 3rd party tested & verified · Free shipping
Mold Capture

99.95% of household mold. Gone in 60 minutes.

We put the Max in a sealed chamber, filled the air with Aspergillus (the most common household mold), and let it run one cycle. Sixty minutes later, 99.95% of the spores were gone. Tested at an independent lab, not on our own bench.*

Video: sealed smoke-chamber test (add .mp4 URL)
Whole Home Coverage

One unit. The whole floor, up to 1950 sq ft.

Most purifiers guard one small room and quit. The Max is AHAM certified for spaces up to 1,950 sq ft. Think the open-plan living room, the studio, the primary bedroom. It cleans air that leaves other units running flat out and still falling short.

Windmill Air Purifier Max in an open-plan living space
Design & Materials

The only purifier designed with real bamboo

Most purifiers look like equipment. The Max is finished with a real bamboo base that's warm, renewable, and made to be seen. The rare piece of home tech you'll set out in the open on purpose.

  • True HEPA filter, captures spores down to 0.1 microns
  • Clears up to 1,950 sq ft in 60 minutes
  • Free shipping, no assembly required
Real bamboo finish of the Windmill Air Purifier Max
Ready to breathe cleaner?

Lab-tested mold defense, $299

Shop the Max · $299

Lifetime warranty*|Free shipping|30-day returns

Quiet by Design

You won't hear it work.

Two ways to sleep on it. Whisper mode drops to just 16 dB, quieter than a whisper and all but silent through the night. White noise mode holds a soft, steady hum for anyone who sleeps better with a little sound in the room.

Person relaxing beside the Windmill Air Purifier Max
Why It Matters

You've been living with it. And calling it fine.

The stuffy mornings. The musty smell that never fully leaves the closet. The window you keep shut in spring. You've cracked the window, run the fan, wiped down the sills. Small fixes. Twelve small fixes that never quite added up.

It wasn't you. Standard filters simply miss mold. Spores run 2 to 20 microns and slip right through. HEPA 13 captures 99.95% of particles down to 0.3 microns. Smaller than any spore. Nothing to slip through.

A dirty used filter beside the Windmill Air Purifier Max — this is in your air
This is in your air
One purifier does it all — Windmill Air Purifier Max compared against typical premium and budget purifiers on lab-tested capture, True HEPA filter, 1,950 sq ft coverage, noise, and lifetime warranty.
Certifications & Recognitions — Energy Star, AHAM Verifide, CARB, ETL Intertek. Verified by trusted organizations and recommended by experts, so you can feel confident in every breath.
By the Numbers

Built to defend your air

99.95%
Household mold captured in 60 min
1,950 sq ft
AHAM-certified coverage
16 dB
Sleep mode, quieter than a whisper
Shop the Max · $299
A person at home beside the Windmill Air Purifier Max, checking the app
Your Home Deserves Better Air

Ready to stop breathing mold?

★★★★★ 342 verified 5-star reviews

Thousands of homes have made the Max their first line of defense against mold. Lab-tested. AHAM certified. Backed for life. This is the fix that finally adds up.

You weren't failing. The approach was. One unit, one cycle, 99.95% of household mold captured and done.
What Our Customers Are Saying

Real homes, real results

★★★★★
Ten stars

"The Windmill Air Purifier... remarkably quiet, beautifully designed, and noticeably improved our air quality. Allergies are better, odors disappear quickly..."

Neil D. Verified buyer
★★★★★
The best air purifier out there!

"I live with multiple allergies and this thing has been a life saver! It keeps my homes air nice and clean and even helps to keep dust at bay!!"

Lily Verified buyer
★★★★★
Love it.

"Loving my windmill. It notifies me whenever the air quality is bad on my phone and turns on automatically so I don't even have to think about it."

Jon F. Verified buyer
Defend Your Air

Stop breathing mold.
Start today.

Shop the MAX · $299
Lifetime warranty*
3rd party tested & verified
Free shipping

FAQs

The Air Purifier Max pairs a True HEPA filter with an activated carbon layer and is independently lab tested to capture 99.95% of common household mold in 60 minutes. It's AHAM certified for spaces up to 1,950 sq ft, runs as quiet as 16 dB, and is finished with a real bamboo base, so it's built to be seen, not hidden.
No. The Max works fully on its own without wifi. Connecting it to wifi is optional and unlocks app features like air quality alerts and remote control, but every core function, including eco mode sensing, runs without a connection.
Yes. The activated carbon layer absorbs common household odors and VOCs, including the musty smell mold leaves behind, so the air doesn't just measure cleaner, it smells cleaner too.
The Max uses Windmill's HEPA 13 replacement filter with an activated carbon layer. Most households replace it every 6 to 8 months, and the unit tracks usage and reminds you when it's time. A filter subscription keeps the lifetime warranty active and ships replacements free.