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SpecWhynter ARC-1230WNH NEX Inverter Portable AC with HeatMidea U 12,000 BTU U-Shaped Window AC (MAW12V1UWT)
PhotoWhynter ARC-1230WNH NEX Inverter Portable AC with HeatMidea U 12,000 BTU U-Shaped Window AC (MAW12V1UWT)
Our scoreSCORE6.5 / 10SCORE7.5 / 10
Our takeThe 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.The biggest current U, not recalled and rated CEER 15. We found no verified listing for it, and a 12,000 BTU unit on a shared 115V circuit deserves a check of what else is on that outlet.
TypePortableU-shaped window
Cooling (DOE / SACC)12,000 BTU12,000 BTU
CEER14.215best
InverterYesYes
Heat modeHeat pumpNone
Noise, lowest setting (maker figure)42.5 dBAn/a
Window width, min28 inn/a
Window width, max82 inn/a
Warranty1 yrn/a
ENERGY STARNoYes
Watch out forWarranty 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.CPSC recall #25320 (June 2025) covers the 8,000-12,000 BTU V1QWT, AV1QWT, W1QWT and U1QWT Midea U models over mold from pooled water. Read the suffix on the listing and again on the box label. The recalled 12,000 BTU models are MAW12V1QWT, MAW12AV1QWT, MAW12W1QWT and MAW12U1QWT.
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