Appliances / Window air conditioners / Midea

Through the Wall

Midea MT12VB1: $118 a year to run

This room air conditioner uses 648 kWh of electricity a year. At the U.S. average price that is $118 a year and $1,179 over a typical 10-year life. It ranks #38 of 58 through the wall models for running cost.

  1. Price. Check what it costs at the store (links below).
  2. Plus running cost. Add $1,179 of electricity over 10 years. That is the part the price tag hides.
  3. Compare. Pick your state to see your real number, then check the cheaper-to-run models of the same size.
Per year (U.S. avg)
$118
Over 10 years
$1,179
Saves vs the federal minimum
$100/yr
Size
12,000 BTU

Where to buy

Compare the price, then add the running cost below to get the true cost.

Cost to run where you live

Electricity per year
$118
Electricity over 10 years
$1,179
Add the price you pay
+ $1,179

648 kWh a year (ENERGY STAR test figure) × 18.19¢ per kWh, the average residential price in the U.S. for Jan–Aug 2026 (EIA). Your bill depends on your utility and how you use it.

Cheaper to run, same type and size

Or see every large rooms (over 10,000 to 15,000 btu) model ranked.

Friedrich WCVT12B10B11200 BTU$108/yrsaves $95
Friedrich WCVT10B10A11000 BTU$116/yrsaves $24
Wallmaster WCVT12B30B11800 BTU$116/yrsaves $20
Friedrich WCVT10B30A11100 BTU$116/yrsaves $15

Specs

BrandMidea
ModelsMT12VB1, MT12VB2
TypeThrough the Wall
Energy use648 kWh / year
Federal maximum for this type1199 kWh / year
Width24.1 in

Specs and energy use from the ENERGY STAR certified products list (U.S. EPA). An asterisk in a model number stands for colour or finish codes. HouseholdLeak is not affiliated with ENERGY STAR or the EPA.

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