Appliances / Window air conditioners
Cheapest window air conditioners to run
Energy use for room air conditioners is based on 750 hours of cooling a year, the ENERGY STAR test assumption. Hotter states run them longer. We ranked all 550 ENERGY STAR certified models by yearly electricity cost at the U.S. average price. Open any model to see the cost in your state.
Shop by size
Compare like with like: the cheapest models to run in the size you need.
Through the Wall 58 models
| # | Model | Size | kWh / yr | Per year | 10 years |
|---|---|---|---|---|---|
| 1 | Brothers 102378 | 8000 BTU | 426 | $77 | $775 |
| 2 | DuraSTAR DRTAC081XVB1 | 8000 BTU | 426 | $77 | $775 |
| 3 | Frigidaire FHTC085WC1 | 8000 BTU | 426 | $77 | $775 |
| 4 | Midea MAT08R1FWTK | 8000 BTU | 426 | $77 | $775 |
| 5 | Midea MAT08R1SWTK | 8000 BTU | 426 | $77 | $775 |
| 6 | Midea MT08VB1 | 8000 BTU | 426 | $77 | $775 |
| 7 | Midea MWEUTW-08CRFN8-BCN1 | 8000 BTU | 426 | $77 | $775 |
| 8 | PELONIS PAT08R1KWT | 8000 BTU | 426 | $77 | $775 |
| 9 | Perfect aire 1PATWV8000 | 8000 BTU | 426 | $77 | $775 |
| 10 | Seasons ST08VB1 | 8000 BTU | 426 | $77 | $775 |
| 11 | Brothers 102397 | 10000 BTU | 532 | $97 | $968 |
| 12 | DuraSTAR DRTAC101XVB1 | 10000 BTU | 532 | $97 | $968 |
| 13 | DuraSTAR DRTAC102XVB1 | 10000 BTU | 532 | $97 | $968 |
| 14 | Frigidaire FHTC105WC1 | 10000 BTU | 532 | $97 | $968 |
| 15 | Midea MAT10R1FWTK | 10000 BTU | 532 | $97 | $968 |
Window 492 models
| # | Model | Size | kWh / yr | Per year | 10 years |
|---|---|---|---|---|---|
| 1 | BLACK+DECKER BDM05C | 5000 BTU | 260 | $47 | $473 |
| 2 | Brothers 102372 | 5000 BTU | 260 | $47 | $473 |
| 3 | Frigidaire FHWC055TF1 | 5000 BTU | 260 | $47 | $473 |
| 4 | Frigidaire FHWC056TF1 | 5000 BTU | 260 | $47 | $473 |
| 5 | Midea MAW05R1KWT-B | 5000 BTU | 260 | $47 | $473 |
| 6 | Midea MAW05R1VWBL-T | 5000 BTU | 260 | $47 | $473 |
| 7 | Midea MAW05R1VWWT-T | 5000 BTU | 260 | $47 | $473 |
| 8 | Midea MAW05S1KWT-A | 5000 BTU | 260 | $47 | $473 |
| 9 | Midea MWEUWA-05CRFN8-BCN4 | 5000 BTU | 260 | $47 | $473 |
| 10 | Perfect aire 1PACV5000 | 5000 BTU | 260 | $47 | $473 |
| 11 | Vissani VAW05V1KWT | 5000 BTU | 260 | $47 | $473 |
| 12 | TCL T05WV9M | 5000 BTU | 274 | $50 | $498 |
| 13 | TCL T05WV9MB | 5000 BTU | 274 | $50 | $498 |
| 14 | TCL W5WC72 | 5000 BTU | 274 | $50 | $498 |
| 15 | TCL W5WC72-B | 5000 BTU | 274 | $50 | $498 |
By brand
Midea (192)TCL (50)Friedrich (31)Frigidaire (25)Hisense (20)Whirlpool (20)Perfect aire (19)Frigidaire Gallery (12)LG (12)BLACK+DECKER (11)Keystone (11)K�hl (11)Seasons (11)DuraSTAR (10)GE Appliances (10)Vissani (10)GE Profile (9)Brothers (7)Danby (6)Keplerx (6)Ktaxon (6)ROVSUN (6)GREE (5)Comfort Aire (4)ELEMENT (4)PELONIS (4)ZAFRO (4)Century (3)DELLA (3)GE (3)HOUSE KOBO (3)Hykolity (3)Richmond (3)ZOKOP (3)PHILODECO (2)Wallmaster (2)Windmill (2)Gradient (1)HEMA (1)Honeywell (1)Kinghome (1)LUBECK (1)MAW08H1KWT (1)Sea Breeze (1)
Source: ENERGY STAR certified window air conditioners (U.S. EPA) and EIA average residential electricity price, Jan–Aug 2026. Energy use is the official test figure; real use varies.