Cooling one room comes down to two shapes: a window/wall unit that mounts in the opening and cools harder for less, or a portable you can roll anywhere. We lined up two of each — best-overall and best-price — and the best part: all four plug into a normal 115V outlet, so there’s no wiring, no electrician, no waiting.
Our four picks — 2 window, 2 portable
How the four compare
| LG LT1016CER | HAVEMY Window AC | Midea Duo | BLACK+DECKER BPACT | |
|---|---|---|---|---|
| Type & install | Window / wall sleeve | Window-mounted | Portable — rolls anywhere | Portable — rolls anywhere |
| Power | 115V standard outlet | 115V standard outlet | 115V standard outlet | 115V standard outlet |
| Cooling & coverage | 10,000 BTU · 440 sq ft | Small–mid room | Whole-room · dual-hose | Small–mid room |
| Rating | 4.0★ (577) | New — few reviews | 4.1★ | 4.0★ |
| Running cost / efficiency | Best — heat goes outside | Good — heat goes outside | Fair — some heat indoors | Fair — some heat indoors |
| Noise (indoors) | Quiet — compressor outside | Quiet — compressor outside | Louder — all indoors | Louder — all indoors |
| Flexibility | Fixed once installed | Fixed once installed | Move room to room | Move room to room |
| Price | $$ | $ | $$ | $ |
Window vs portable, in detail
Window / wall units — the efficient workhorses
Half the unit sits outside, so it dumps heat straight out and keeps the compressor noise out of the room. For the same BTU you get more real cooling and a lower bill, and both of ours run on a standard 115V outlet. The catch: they only fit a standard window (or, for the LG, a wall sleeve), they block that opening, and it’s a two-person lift to set. If your window fits one, it’s the value pick.
Portables — the go-anywhere ones
Everything lives in one rolling box that vents through a hose to almost any window. That flexibility is the point — move it between rooms, take it when you move, use it where a window unit can’t mount. The trade-off is efficiency: because the whole unit sits indoors, some heat leaks back in, so it works a bit harder and runs louder. Look for a dual-hose model (like the Midea Duo) to close the gap.
Which is right for you?
Most cooling per dollar, lowest running cost, quietest room. The all-rounder.
The lowest-cost way into a real window AC — plugs into a standard outlet, 5-yr warranty.
Rolls anywhere, dual-hose for better efficiency, and it’s our best-reviewed portable.
The budget portable — a longtime crowd favorite that just plugs in and rolls.
For most people cooling one room, a window/wall unit wins on the numbers — more cold air per dollar, lower running cost, quieter room — and the LG is the easy all-rounder (the HAVEMY if price rules). Choose a portable when flexibility or your window type decides it: the Midea Duo is the best overall, the BLACK+DECKER the value play. Either way, size the BTU to your room — and see our full Top 10 portable air conditioners if you go that route.
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Sources. Comparison is our editorial opinion. Voltage: the LG is listed at 115V; the portables and this class of window unit run on a standard 115V household outlet. Star ratings and best-seller ranks are from the listings and change over time. Shopping links are affiliate links; we may earn a commission at no extra cost to you.