A window AC that’s as powerful, eco-friendly, and cool as they come.
Find out if Windmill is right for you
Take care of your air
AC, refreshed
Thanks for your review!
Go with the flow
We put in top vents that blow air up and out into the room at a 45 degree angle (and not into your face), allowing for better air flow and cooling.
Seal the deal
Not only do our insulation panels look refreshingly clean, they keep out drafts and bugs so well you can leave the unit in year-round.
Always the temp you want
Control Windmill from anywhere with our app. Turn it on 10 minutes before you get home on a blazing hot day. Turn it off if you forgot you left it on. Good for you, better for the environment.
Phone Controlled
Wifi Connected
Voice Enabled
Eco-friendly to the core
We built Windmill with the environment in mind, so we decided to use a refrigerant (R32) with 68% less global warming potential than what’s commonly used (410a). We'll also help offset your AC's carbon footprint and recycle any old units.
Hides in plain sight
With curved edges, clean lines, and an auto-dimming LED display, Windmill blends right into your home (without bright LEDs keeping you up at night).
Cleaner air, delivered
Fresh filters mean fresher, healthier air, plus improved performance and longevity for your AC. We’ll keep you supplied so you don’t have to think about it too much.
Don’t sweat the setup
If you need a little help, we’ve made it easy for you.
Do It Yourself
We’ve pre-assembled the installation kit so setup is a breeze. And, we’re always a message away if you run into issues.
TaskRabbit
For an extra helping hand, we’ve partnered with TaskRabbit nationwide so you can find someone qualified to install your AC.
Premium Installation*
For those in NYC, we offer custom plexiglass and city-compliant installations by professional technicians (they'll even remove and recycle your old unit).
*Selected at checkout
Find out if Windmill is right for you
From the ones living breezy
A breeze 60 years in the making
We’re building on a longstanding family tradition in the AC manufacturing business, bringing you a new spin on proven quality.
Life with Windmill
Follow @ Windmillair
"The iPhone of air conditioners"
"Far nicer than any unit on the market right now"
Give your old AC a new life
When refrigerants leak into landfills, it’s pretty awful for the environment. Properly recycling your old AC unit is an easy way to prevent that.
Your cart
Super fresh
Carbon Filter Pack
$48.00
Pack of four. Fits directly into your antimicrobial filter for extra air filtration. Protects against smoke, allergens, odors, fumes, and more. Switch them out every three months for best results.
0
Step 1 - Window type
We need to make sure your window can hold an AC unit safely. It must be a double hung window (it should slide up and down) and be in good condition. Does this describe your window?
Step 1 of 3
Step 2 - Window Size
Great! Let’s figure out window size. The Windmill AC is designed to fit windows with a width of 23-37 inches and a vertical opening of at least 14 inches. Sounds accurate?
Step 2 of 3
Step 3 - Space Size
OK, what's the approximate size of your space? Best guess is fine!
Small
(100-250 Square ft.)
Medium
(250-350 Square ft.)
Large
(350+ Square ft.)
Step 3 of 3
Step
123
of 3