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10,000 BTU U-shaped window air conditioner

Midea 1010451479

Very good efficiency for its size: a CEER of 16.0 ranks #6 of 28 10,000 BTU window air conditioners.

It cools a room of about 350-450 sq ft, draws about 625 watts and costs about $85 a year to run at typical U.S. use and prices.

CEER
16.0 Combined efficiency, higher is better
Very good · beats 77%
Cooling
10,000 BTU/hFor about 350-450 sq ft
Energy use
469 kWh/yr47% less than the federal minimum
Unit size
19.2" wide 13.5" high, 22" deep, 55 lb

A good fit if…

  • You want low bills - its CEER beats 77% of 10,000 BTU window air conditioners.
  • You want a quieter room and a usable window - the window closes into the U, so the compressor sits outside the glass.
  • 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…

  • You also need heat - it cools only.

Calculate my running costCheck the size for my room

Details

Specifications10,000 BTU, 115 V
General
BrandMidea
Model number1010451479
TypeWindow
DesignU-shaped (window closes through it)
HeatingNo, cooling only
CompressorVariable speed (inverter)
Voltage115 V (standard outlet)
RefrigerantR-32 (GWP 675)
Support bracket includedYes
On the market sinceNovember 17, 2023
Last certifiedAugust 28, 2026
Performance
Cooling capacity10,000 BTU/h
CEERCombined energy efficiency ratio, includes standby power16.0
Yearly energy useENERGY STAR test: 750 hours469 kWh
Better than federal minimum47% less energy
ENERGY STAR Most EfficientYes
Size
Width × height × depth19.2" W × 13.5" H × 22" D
Weight55 lb
How it compares with 27 other 10,000 BTU window units#6 of 28
  • CEER (class median 15.0)16.0, tied with 6 others
  • Yearly cost vs. class median ($90)$6 less
  • Width 19.2" (class median 20.3")narrower than 67%
  • Weight 55 lb (class median 63 lb)lighter than 74%
  • Rank among 9 similar designs (U-shaped)#1

Compared with the other ENERGY STAR certified 10,000 BTU window units. Yearly cost at 750 hours and 18.0¢/kWh.

Same unit, other model numbers8

These model numbers have the same capacity, efficiency, energy use, dimensions and weight as the Midea 1010451479: the same unit under another brand, or with a colour or retailer code. Everything on this page applies to them.

Questions8
How many square feet does the Midea 1010451479 cool?
At 10,000 BTU/h it suits a room of about 350 to 450 sq ft with normal sun and two people, following the ENERGY STAR sizing guide. In a heavily shaded room that stretches to about 385-495 sq ft; in a very sunny one it shrinks to 315-405 sq ft. A kitchen needs 4,000 BTU more.
How many watts and amps does the Midea 1010451479 use?
About 625 watts at full power (10,000 BTU/h divided by its CEER of 16.0), which is 5.4 amps at 115 V. That is 42 W less than the typical unit in its class (667 W), or $6 a year cheaper to run at 18.0¢/kWh. Its inverter compressor slows down instead of cycling, so real use is usually lower. Its CEER beats 64% of the 28 units in the class.
Can the Midea 1010451479 run on a standard outlet?
Yes. It runs on 115 V and draws about 5.4 A, well inside a standard 15 A outlet, but do not share the circuit with a space heater, microwave or other big load. Every certified unit in this class is 115 V.
What are the dimensions of the Midea 1010451479, and will it fit my window?
19.2" W × 13.5" H × 22" D, 55 lb. It is narrower than 67% of its 27 competitors and lighter than 74% of them. The window closes into the U-shaped slot, so measure the opening height as well as the width: you need at least the unit's 19.2" width between the frame sides.
Is the Midea 1010451479 U-shaped design an advantage?
Mostly yes. The sash closes into the unit, so the window stays sealed and daylight comes in, and the compressor is outside the glass, which cuts noise indoors. The trade-off is a window that must slide up and down, and a few extra steps to fit the foam seals.
Can the Midea 1010451479 also heat the room?
No, it only cools. If you also need heat, 6 certified units in this class can do both; see the list of air conditioners with heat.
Is the Midea 1010451479 worth buying to replace an old air conditioner?
An old unit of the same size at 9 CEER would cost about $150 a year to run at 750 hours and 18.0¢/kWh; this one costs about $85, so it saves roughly $66 a year.
Is the Midea 1010451479 the same as the Midea 1014264129?
As far as the certified data goes, yes. ENERGY STAR lists 9 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 1010451479
2. How you use it
Per year
$132
Per month of use
$24
Per day
$0.80
Per hour
10.0¢
Power draw
625 W

Electricity used: 825 kWh a yearAn old 9 CEER unit of the same size would cost $235

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 1010451479.

ModelCEERCompared with this one
Frigidaire Gallery GHWW105TF116.0same CEER, standard box
GE PWJV10W16.0same CEER, 15 lb heavier, standard box
Whirlpool WHAW101CX16.0same CEER, 0.6" narrower, 12 lb lighter
TCL T10WV3S16.0same CEER, 0.6" wider, 5 lb lighter
Midea MAW10V1WWT16.0same CEER, 8 lb lighter, standard box

See all 28 10,000 BTU window air conditioners, ranked

Source: ENERGY STAR Certified Room Air Conditioners (U.S. EPA), certification of August 28, 2026. How we use the data.