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12,000 BTU window air conditioner with heat

Midea MAW12HV1KWT-A

Below average efficiency for its size: a CEER of 14.4 ranks #31 of 34 12,000 BTU window air conditioners.

It cools a room of about 450-550 sq ft, draws about 833 watts and costs about $113 a year to run at typical U.S. use and prices.

CEER
14.4 Combined efficiency, higher is better
Below average · beats 9%
Cooling
12,000 BTU/hFor about 450-550 sq ft
Energy use
625 kWh/yr47% less than the federal minimum
Unit size
19.4" wide 13.9" high, 22.2" deep, 60 lb

A good fit if…

  • You want heat in spring and fall - it runs as a heat pump in reverse.
  • You want to plug it into an ordinary outlet - it runs on 115 V.
  • You want the very top tier - it meets the ENERGY STAR Most Efficient criteria.

Think twice if…

  • Running cost matters most - its CEER is below average for 12,000 BTU window air conditioners.

Calculate my running costCheck the size for my room

Details

Specifications12,000 BTU, 115 V
General
BrandMidea
Also sold asDuraSTAR
Model numberMAW12HV1KWT-A
TypeWindow
DesignStandard box
HeatingYes (heat pump, reverse cycle)
CompressorVariable speed (inverter)
Voltage115 V (standard outlet)
RefrigerantR-32 (GWP 675)
Support bracket includedNo
On the market sinceJuly 14, 2026
Last certifiedSeptember 29, 2026
Performance
Cooling capacity12,000 BTU/h
CEERCombined energy efficiency ratio, includes standby power14.4
Yearly energy useENERGY STAR test: 750 hours625 kWh
Better than federal minimum47% less energy
ENERGY STAR Most EfficientYes
Size
Width × height × depth19.4" W × 13.9" H × 22.2" D
Weight60 lb
How it compares with 33 other 12,000 BTU window units#31 of 34
  • CEER (class median 15.0)14.4, tied with 1 other
  • Yearly cost vs. class median ($108)$5 more
  • Width 19.4" (class median 20.7")narrower than 64%
  • Weight 60 lb (class median 59 lb)lighter than 39%
  • Rank among 3 similar designs that heat#1

Compared with the other ENERGY STAR certified 12,000 BTU window units. Yearly cost at 750 hours and 18.0¢/kWh.

Same unit, other model numbers2

These model numbers have the same capacity, efficiency, energy use, dimensions and weight as the Midea MAW12HV1KWT-A: the same unit under another brand, or with a colour or retailer code. Everything on this page applies to them.

Questions7
How many square feet does the Midea MAW12HV1KWT-A cool?
At 12,000 BTU/h it suits a room of about 450 to 550 sq ft with normal sun and two people, following the ENERGY STAR sizing guide. In a heavily shaded room that stretches to about 495-605 sq ft; in a very sunny one it shrinks to 405-495 sq ft. A kitchen needs 4,000 BTU more.
How many watts and amps does the Midea MAW12HV1KWT-A use?
About 833 watts at full power (12,000 BTU/h divided by its CEER of 14.4), which is 7.2 amps at 115 V. That is 33 W more than the typical unit in its class (800 W), or $5 a year dearer to run at 18.0¢/kWh. Its inverter compressor slows down instead of cycling, so real use is usually lower. Its CEER beats 6% of the 34 units in the class.
Can the Midea MAW12HV1KWT-A run on a standard outlet?
Yes. It runs on 115 V and draws about 7.2 A, well inside a standard 15 A outlet, but do not share the circuit with a space heater, microwave or other big load. 12% of certified units in this class need 230 V, so a 115 V model is the easy case.
What are the dimensions of the Midea MAW12HV1KWT-A, and will it fit my window?
19.4" W × 13.9" H × 22.2" D, 60 lb. It is narrower than 64% of its 33 competitors and lighter than 39% of them. The window must be wider than 19.4"; the side panels fill the remaining gap.
How does the Midea MAW12HV1KWT-A heat?
It reverses its refrigerant cycle to work as a heat pump, which makes it one of only 5 certified units in its class that heat. Heating output is not part of the ENERGY STAR data, so ask the maker for its heating capacity and lowest outdoor temperature before relying on it in winter.
Is the Midea MAW12HV1KWT-A worth buying to replace an old air conditioner?
An old unit of the same size at 9 CEER would cost about $180 a year to run at 750 hours and 18.0¢/kWh; this one costs about $113, so it saves roughly $68 a year.
Is the Midea MAW12HV1KWT-A the same as the Midea MWAUQB-12HRFN8-BCN4?
As far as the certified data goes, yes. ENERGY STAR lists 3 model numbers with the same capacity, efficiency, energy use, dimensions and weight, which means the same unit sold under another brand or with a different colour or retailer code. The full list is on this page.

Running cost calculator

Pre-filled with this model. Pick your state and how many hours you run it, or see the yearly cost in every state.

1. The air conditioner Midea MAW12HV1KWT-A
2. How you use it
Per year
$176
Per month of use
$32
Per day
$1.07
Per hour
13.3¢
Power draw
833 W

Electricity used: 1,100 kWh a yearAn old 9 CEER unit of the same size would cost $282

Power draw is capacity divided by CEER, which already includes standby power. Inverter units often run below full power, so real use can be lower. Electricity prices: U.S. EIA residential averages (12 months to July 2026). Days a year start from your state's cooling degree days (NOAA 1991-2020 normals).

Closest alternatives

Units with a similar CEER in the same class, and what sets each one apart from the Midea MAW12HV1KWT-A.

ModelCEERCompared with this one
GE Profile PHNT12CCH114.70.3 CEER higher, 21 lb heavier, saddle design, cooling only
GREE GJC12BU-A6DRNJ2A14.70.3 CEER higher, 1.6" wider, 6 lb heavier, U-shaped, cooling only
Hisense LWCT12W25A15.00.6 CEER higher, 0.9" wider, 4 lb lighter, U-shaped, cooling only
TCL T12WQ2S15.00.6 CEER higher, 1.3" wider, U-shaped, cooling only
GE Profile PWDV12W15.00.6 CEER higher, 10 lb lighter, cooling only

See all 34 12,000 BTU window air conditioners, ranked

Source: ENERGY STAR Certified Room Air Conditioners (U.S. EPA), certification of September 29, 2026. How we use the data.