Appliances / Window air conditioners / Very large rooms (over 15,000 BTU)

Cheapest very large rooms (over 15,000 btu) window air conditioners to run

73 ENERGY STAR models in this size. The cheapest to run costs $131 a year; the most expensive costs $381. Over 10 years that gap is $2,499, money you pay on top of the price tag.

Small rooms (under 8,000 BTU)Medium rooms (8,000 to 10,000 BTU)Large rooms (over 10,000 to 15,000 BTU)Very large rooms (over 15,000 BTU)

Through the Wall

#ModelSizePer year10 years
1Friedrich WCVT16B30B15200 BTU$150$1,502
2Friedrich WHVT14B33A15200 BTU$173$1,728
3Friedrich WCVT16B30A16800 BTU$182$1,819

Window

#ModelSizePer year10 years
1K�hl KCVS16B30B15400 BTU$131$1,313
2BLACK+DECKER BDM18C18000 BTU$154$1,535
3Brothers 10238718000 BTU$154$1,535
4Friedrich KCVS16B30A16200 BTU$154$1,535
5Frigidaire FHWW185WF218000 BTU$154$1,535
6GE Appliances AWHV18***# family18000 BTU$154$1,535
7Midea MAW18RV1KWT18000 BTU$154$1,535
8Midea MAW18S2KWT-A18000 BTU$154$1,535
9Midea MWCUWH-18CRFN8-MCP018000 BTU$154$1,535
10Perfect aire 1PACV1800018000 BTU$154$1,535
11Seasons SW18V218000 BTU$154$1,535
12Whirlpool WHAW182INV18000 BTU$154$1,535
13Whirlpool WHHW182INV18000 BTU$154$1,535
14Frigidaire FHWW185WE218000 BTU$164$1,637
15Hisense AW1823TW3W18000 BTU$164$1,637
16Keplerx KBRC18RSVE218000 BTU$164$1,637
17Keystone KSTAW182WA18000 BTU$164$1,637
18Midea MAW18R2VWT18000 BTU$164$1,637
19Midea MAW18RV1CWT18000 BTU$164$1,637
20Midea MAW18S2VWT-A18000 BTU$164$1,637
21Midea MWCUWH-18CRFN8-MCN1018000 BTU$164$1,637
22LG LW1822IVSM18000 BTU$167$1,670
23Friedrich CCV18A30A18000 BTU$171$1,706
24HEMA DS-2W1822CI18000 BTU$171$1,706
25TCL H18W4KW18000 BTU$171$1,706

Source: ENERGY STAR certified window air conditioners (U.S. EPA) and the EIA average residential electricity price. Energy use is the official test figure; real use varies.