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SpecMidea 12,000 BTU Smart Inverter Window AC with Heat (MAW12HV1CWT)LG 12,000 BTU Dual Inverter Window AC (LW1224IVSM)
PhotoMidea 12,000 BTU Smart Inverter Window AC with Heat (MAW12HV1CWT)LG 12,000 BTU Dual Inverter Window AC (LW1224IVSM)
Our scoreSCORE6.9 / 10SCORE7.2 / 10
Our takeThe bigger sibling of our window heat pump pick, with the same 41°F heat floor. Its CEER 13.3 is below DOE's 14.4 minimum for units made from May 26, 2026, and we found no new Amazon listing.For a wide window, 27-39 in with a 16 in opening, and a room up to 550 sq ft: CEER 15 and in-home warranty service. It weighs 85 lb, so plan on two people for the install.
TypeWindow heat pumpWindow
Cooling (DOE / SACC)12,000 BTU12,000 BTU
CEER13.315best
InverterYesYes
Heat modeHeat pumpNone
Noise, lowest setting (maker figure)n/a44 dBA
Window width, minn/a27 in
Window width, maxn/a39 in
Min sash openingn/a16 in
Weight58 lbbest85 lb
Warrantyn/a1 yr
ENERGY STARYesYes
Watch out forOwners report a rattle or a loud start in heat mode, loud enough to wake some at night. Midea's app wouldn't connect for some owners.LG's 1-year warranty applies only when bought from an LG authorized dealer; ask a third-party seller. LG lists the same 1,020 W / 9.1 A for this and the 8,500 BTU model; treat the electrical figure as unconfirmed.
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