The Best Window Air Conditioners

The U-shape isn't a gimmick — it's the reason this thing is quiet. On a normal window AC, the compressor sits a few inches from your face with an open sash above it. Midea splits the unit so the window closes down through the middle, putting the glass between you and the loud half. Tom's Guide reports the design cuts outside noise intrusion by roughly 60% versus a conventional install. Midea rates operation as low as 32 dBA.

You also get your window back. The sash slides up and down normally with the unit installed, so you can crack it for fresh air on a mild evening instead of choosing between AC and a breeze. Renters in cities care about this more than they expect to. There's an anti-theft catch that locks the window when it's closed, which matters on a ground floor.

The inverter compressor ramps up and down instead of slamming on and off. Popular Mechanics found inverter units hold a room within about a degree of the set point, where single-speed compressors swing four to six degrees. In practice that means fewer of those cold blasts followed by a slow, clammy warm-up. Midea claims better than 37% energy savings against conventional units, and this was the first window AC to earn ENERGY STAR certification.

Installation is more involved than a standard unit, but it's well thought out. You snap in the included bracket, set the AC on it, then secure the sidearms. It needs a single- or double-hung window between 22 and 36 inches wide with at least 13.75 inches of height. At about 56 pounds, this is a two-person lift — don't be a hero on a second floor.

Flaws but not dealbreakers

The most consistent owner complaint is mold. Because of the saddle shape, water can sit in the base if the unit never runs in fan-only mode to dry out, and several owners describe finding growth inside after a season. Run the fan for a half hour after cooling, and pull the filter monthly. Some owners also report the remote being flaky.

The saddle design rules out a lot of windows. If you have casements, sliders, security bars, or a sill that won't take the bracket, this isn't your unit. Measure before you order, not after.

At 8,000 BTU it tops out around 350 square feet. Owners cooling more than one room consistently wish they'd gone up to the 10,000 BTU version instead.

This is the normal-shaped window AC that finally got quiet. LG's dual inverter compressor and BLDC motor drop sleep-mode noise to around 44 dB. RTINGS.com measured a closely related LG inverter model at 51.5 dB on high and 44 dB on low, against a category average near 56 dB on high. That gap is the difference between a unit you notice and one you forget is running.

It covers more room than our top pick. At 10,000 BTU it handles up to 450 square feet, which is a real living room rather than a bedroom. If your space gets more than four hours of direct sun a day, This Old House suggests adding about 4,000 BTU to your base calculation — this unit gives you that headroom where an 8,000 BTU model wouldn't.

The efficiency case is strong. LG claims up to 35% better energy savings than the ENERGY STAR requirement, and Wirecutter found LG's dual-inverter design uses roughly 25% less energy than fixed-speed competitors at the same output. Over a full cooling season in a hot climate, that adds up meaningfully on the bill.

The ThinQ app handles scheduling and remote start, and it works with Alexa and Google Assistant. Scheduling is worth setting up: running the AC on a schedule rather than always-on can cut runtime 15 to 20%, and the Department of Energy estimates that raising the setpoint 7 to 10 degrees for eight hours a day saves about 10% on cooling. The filter slides out for washing, which you should do monthly.

Flaws but not dealbreakers

It's heavy — about 63 pounds — and it installs in a conventional fixed chassis, so it blocks your window. Multiple owners strongly recommend adding a support bracket, which isn't included. Get the tilt right during install or condensation will drain the wrong way, which is the most common complaint here.

Startup is slower than a fixed-speed unit. The compressor eases in rather than jumping to full blast, so the first few minutes feel underwhelming if you're used to an old rattler.

The pitch is the view. Like the Midea, the ClearView sits low in the window so you keep the glass and the light, and the window opens and closes after installation. GE rates it as low as 40 dB and calls itself the quietest window AC brand in the US. At 10,300 BTU it covers up to 450 square feet, and it's ENERGY STAR certified with inverter technology GE says is 34% more efficient.

The flex-depth chassis is the reason to pick this over the Midea. It expands to fit walls and sills between 4.5 and 13.75 inches thick, and it handles windows 20 to 40 inches wide. Older houses with deep sills, or apartments with odd trim, defeat a lot of window ACs. This one has an actual adjustment for it rather than asking you to improvise with foam.

If you already live in Google Home or SmartThings, the SmartHQ integration is the deepest here. You get remote control, monitoring and filter alerts from your phone, plus Alexa and Google voice control. For a unit in a guest room or a second floor you don't visit daily, being able to check on it remotely is genuinely useful.

Flaws but not dealbreakers

Owner feedback on reliability is mixed, and that's the reason this isn't higher. The most common failure reports involve condensation not pumping out to the exterior, throwing an error code and stopping cooling. Others describe the width adjustment being imprecise enough that getting a tight seal takes real work.

Installation is the most demanding of our picks. Several owners describe measuring, trimming and repositioning before it sat right, and at roughly 76 pounds it's the heaviest unit here. Budget an afternoon and a second person.

Installation is the whole argument. The kit arrives pre-assembled with a carry strap, and Bob Vila puts first-time installation at around 28 minutes, against a 45 to 60 minute industry average for units that need tools and brackets. Owners describe getting it in without reading the instructions. If you've ever balanced an AC on a sill while hunting for a screwdriver, that's worth something.

It's designed to be lived with. The vents push air out at a 45-degree angle so it spreads through the room instead of blowing straight at your desk, the LEDs auto-dim at night, and the facade looks like a piece of furniture rather than a beige appliance. There's a washable mesh filter plus an optional activated carbon filter, three cooling settings and three fan speeds.

It's the least powerful unit here, and that's the point. At 6,000 BTU and 250 square feet it's sized for one bedroom, and correct sizing matters more than people think. An oversized unit short-cycles: it hits the temperature fast, shuts off, and never runs long enough to pull humidity out, leaving the room cold and clammy. For a small room, this is the right size rather than a compromise.

The app is a real one, with remote control and scheduling plus voice assistant support. Double-insulated side panels help keep cool air in and street noise out, and owners consistently describe it as a gentle hum rather than a rattle.

Flaws but not dealbreakers

It isn't a true inverter. The fan ramps at a fixed rate and the compressor cycles on and off, so you'll get the temperature swings that inverter units avoid, and the efficiency won't match our top picks. Owners who've lived with both models are direct about this difference.

Long-term reliability is the open question. Some owners report app disconnects and odd behavior after a couple of seasons. It also costs more than a plain 6,000 BTU unit of similar output, so you're paying for the design and the install experience.