SeasonsST12VB2

Window AC

DOE certified cooling

12,000BTU/hDOE test

Through the wall · CEER 13.9 · 1,140 W

Cools rooms up to 550 sq ft

DOE data as of 2026-11-03DOE record

Does it fit your room? ENERGY STAR sizing chart

Seasons ST12VB2: certified to DOE at 12,000 BTU/h cooling, CEER 13.9, 1,140 W, through the wall unit. DOE data as of 2026-11-03.

Every model number on this record

Filed with DOE under basic model ST12VB2. A listing with any of these numbers is this unit.

Every model number filed under basic model ST12VB2, DOE data as of 2026-11-03
Model numberFiled by
ST12VB2 (DOE basic model)Seasons

How much does the Seasons ST12VB2 cost to run?

About 21¢ an hour of cooling, or $49.69 for 30 days at 8 hours a day (less once the compressor cycles off).

DOE's record lists 1,140 W of electrical input while cooling. Electricity at 18.16¢/kWh, the US residential average for August 2026 (EIA Electric Power Monthly, table 5.6.A). Each 1¢/kWh you pay above or below 18.16¢ moves the 8 hour figure by 9¢.

How does the Seasons ST12VB2 rank in its DOE class?

Its DOE class (through the wall ACs, 11,000 to 13,999 BTU/h) has 34 models certified to DOE. Its CEER of 13.9 is tied for 2nd of the 34, and level with their median of 13.9.

Window ACs for 550 sq ft (2 with a listing)

Among 34 through the wall ACs, 11,000 to 13,999 BTU/h

Cooling (BTU/h)12,000

Higher than 1 of 34. 28 others share 12,000.

11,00012,200 BTU/h

Efficiency (CEER)13.9

At the class minimum, with 32 others.

13.916.5

Two to compare with

From models with a matched listing.

  • Within 1,000 BTU/h of its size, highest CEER

    TCL T12WV4S12,000 BTU/h

    Up to 550 sq ft, window, CEER 16: about 13% less power for the same cooling.

  • Nearest bigger unit

    TCL T14WV9S14,000 BTU/h

    Up to 700 sq ft, window, CEER 16.

DOE record

Cooling

Cooling capacity
12,000 BTU/h
Efficiency (CEER)
13.9 Btu/Wh
Power input
1,140 W

Build

Mount
Through the wall
Heat pump
No

Record

DOE basic model
ST12VB2
DOE class
(8b) Without reverse cycle, without louvered sides, and 11,000 to 13,999 Btu/h
Brands on the filings
1
In DOE's list since
2026-11-02first snapshot we hold
UPC (ENERGY STAR record)
194671069395
ENERGY STAR record
ST12VB2certified 2026-05-11

Questions

How big a room does it cool?
About 550 sq ft. ENERGY STAR's sizing chart calls for 12,000 BTU/h in rooms up to 550 sq ft. A sunny room, a kitchen or a high ceiling needs more.
How much does the Seasons ST12VB2 cost to run for 8 hours?
About $1.66 for 8 hours of cooling: roughly 1,140 W at 18.16¢/kWh, the US residential average for August 2026 (EIA).