
Midea
4-in-1 PortaSplit 3.5 kW Portable Air Conditioner and Dehumidifier
Quiet, efficient split; but mold issues and bulky.

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I have an LG portable unit in the living room, connected to the kitchen. It’s a 12K btu and works great for that area. I need it cool and quiet for the bedroom. 3 years ago, I got a Midea U window unit, think its 8K BTU. It is the best, hands done. Very quiet, as it’s a DC operated fan. It has 0-100 % speed control. At 10% and on low cool, you can barely hear it.
I don’t know if this helps, but when my house’s central AC went out during one of those heat waves, I bought a 12,000 BTU portable AC on Facebook Marketplace. I was looking for a reputable brand, so I got an LG. I paid $250, and it worked flawlessly. I expected it would only cool one bedroom, but it was powerful enough to cool the entire floor (we used some floor fans to move air from room to room). The only downside was that it produced so much condensation that I had to wake up at midnight to empty a 2-gallon bucket of water. After two weeks, when my central AC was fixed, I sold it for the same price on Facebook.
End of reviews

Midea
4-in-1 PortaSplit 3.5 kW Portable Air Conditioner and Dehumidifier
Quiet, efficient split; but mold issues and bulky.

Midea
Duo Series
Efficient dual-hose inverter; but high-pitched noise, sealing issues.

Whynter
ARC-1230WN
Smart dual-hose inverter; struggles in extreme heat.

Whynter
ARC-14S
Durable dual-hose; but drainage, power, struggles in heat.

LG Electronics
10,000 BTU (SACC) / 14,000 BTU (ASHRAE) DUAL Inverter Smart Wi-Fi Portable Air Conditioner (LP1419IVSM)
Very quiet dual inverter; not for whole-house.

Ranked #1
Midea - 4-in-1 PortaSplit 3.5 kW Portable Air Conditioner and Dehumidifier

Ranked #1
Midea - 4-in-1 PortaSplit 3.5 kW Portable Air Conditioner and Dehumidifier

Ranked #1
EcoFlow - WAVE 2 Portable Air Conditioner