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The Best U-Shaped Window ACs for Quiet Cooling Are Marked Down Up to 53% Off for Memorial Day
2026-05-18 · via Latest Content - Popular Mechanics
  • Memorial Day sales on U-shaped window AC units are already live.
  • U-shaped window AC units save space and operate quietly.
  • Our best-tested window AC unit is on sale for 20% off.

Memorial Day is the unofficial start of summer, and has us reinstalling our window AC units. If your model is outdated or you just barely made it through last summer, now’s the time to shop. We’re seeing early Memorial Day sales on plenty of window units that can cool everything from small bedrooms to big living rooms. One style that’s popular with renters is the U-shaped window air conditioner.

They work like any other window AC unit—pull in warm air, cool it, and shoot it back into the room while pushing heat outside—but with a better design. Typical box-window AC units have most of the machine hanging out your window, somewhat precariously, obstruct your view, and keep you from opening your window for a summer breeze.

A U-shaped window AC hangs on the window sill, half inside, half outside, for a balanced installation. Plus, you can still see outside. Most units double as fans, and many now include dehumidifier modes, which is something you’ll appreciate on soupy days. Along with window AC units, we’ve tested ductless splits and portable models—suffice it to say, we’ve done the homework for you. Here are the U-shaped window AC units worth shopping this weekend.

Memorial Day U-Shaped Window AC Deals

Memorial Day U-Shaped Window AC Deals

Quiet Operation

Window Air Conditioner

Antarctic Star Window Air Conditioner

Now 13% Off

Quiet Operation

12,000 BTU U Shaped Window Air Conditioner

Zafro 12,000 BTU U Shaped Window Air Conditioner

Now 11% Off

Perfect for Bedrooms

On Sale

Window Air Conditioner

Garvee Window Air Conditioner

Now 17% Off

Over Half Off

On Sale

Window Air Conditioner

Tehanld Window Air Conditioner

Now 51% Off

The Zafro 6-in-1 AC unit is an excellent choice for mid-size rooms. It takes up just a few inches of space, preserving your view, and is a snap install. It uses an inverter compressor for efficient, low-noise operation, so it’s ideal for bedrooms as well. The digital controls are user-friendly, and the app makes it easy to adjust before you arrive home. It’s $50 off forf Memorial Day and is a solid bet.

The best deal thus far is this Tehand unit, which can cool a room up to 450 feet. Right now it’s over 50% off, saving you $420. The adjustable vents and powerful compressor are capable of blasting cool air where you want it and fast.

Headshot of Danny Perez

Danny Perez is a Reviews Editor for Popular Mechanics with a focus on men's style, gear, and home goods. Recently, he was coordinator of partnership content at another product journalism outlet. Prior to that, he was a buyer for an independent men's shop in Houston, Texas, where he learned all about what makes great products great. He enjoys thrifting for 90s Broadway tees and vintage pajama sets. His spare time is occupied by watching movies and running to impress strangers on Strava.