Compare tool

Compare models side by side

Pick two to four models. The best figure in each row is marked, and every number comes from the maker, NEEP or ENERGY STAR. Copy the URL to share a comparison.

All mini-splits & heat pumps ranked →All dehumidifiers ranked →All window, wall & room units ranked →All heating ranked →All parts, tools & supplies ranked →

SpecMidea 12,000 BTU Smart Inverter Window AC with Heat (MAW12HV1CWT)Whynter ARC-1230WNH NEX Inverter Portable AC with Heat
PhotoMidea 12,000 BTU Smart Inverter Window AC with Heat (MAW12HV1CWT)Whynter ARC-1230WNH NEX Inverter Portable AC with Heat
Our scoreSCORE6.9 / 10SCORE6.5 / 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.The portable we'd buy: hose-in-hose inverter, 12,000 BTU SACC, a published CEER of 14.2 and a heat pump. The catch is the mail-in warranty and an authorized-dealer requirement.
TypeWindow heat pumpPortable
Cooling (DOE / SACC)12,000 BTU12,000 BTU
CEER13.314.2best
InverterYesYes
Heat modeHeat pumpHeat pump
Noise, lowest setting (maker figure)n/a42.5 dBA
Window width, minn/a28 in
Window width, maxn/a82 in
Weight58 lbn/a
Warrantyn/a1 yr
ENERGY STARYesNo
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.Warranty is 1 year plus 3 years on the compressor, but service is mail-in, only within the 48 contiguous states, needs an authorized Whynter dealer, and you pay return freight after month two. Portable ACs are excluded from ENERGY STAR's room AC program. ARC-1230WN and ARC-1230WN2 are similar inverter models with no heat.
More