WindowBest designENERGY STAR

Windmill AC

4.4(1,920 retailer ratings) by Windmill · Model W1W31

The best-looking window unit — front-facing airflow, a clean facade, tool-free install, plus app and voice control.

Cooling

8,300 BTU

Covers

350 ft²

Efficiency

15CEER

Noise

50 dB

$415 est.

typical street price · via Windmill

Check Price

Is 8,300 BTU right for your room? Run the sizing calculator

Strengths & trade-offs

Pros

Stylish, front-facing airflow
Tool-free install
App + Alexa/Google

Cons

Pricey for 8,300 BTU
One color (white)

What the Windmill AC costs to run

Estimated from this unit's 15CEER rating at 8 hours/day of cooling, using average residential electricity rates for each US climate zone. Your usage and utility rate will shift these numbers — run the calculator for your exact room.

Climate zone	Example regions	Est. cost / month
Cool North	Pacific NW, Upper Midwest, New England	$21 /mo
Mixed / Temperate	Mid-Atlantic, Midwest, Mountain	$23 /mo
Hot & Humid	Southeast, Gulf Coast, Texas	$19 /mo
Hot & Dry	Southwest, Desert	$20 /mo

Full specifications

Type	Window air conditioner
Cooling capacity	8,300 BTU
Rated coverage	350 ft²
Efficiency	15 CEER
Noise (low)	50 dB
Smart features	App, Voice, Scheduling
ENERGY STAR	Yes
Model number	W1W31
Typical street price	$415