BLACK+DECKER BDM078C Energy Use and Running Cost

Running cost calculator

Where your state sits among all 51

$54.31 Louisiana$204.96 Hawaii

Cost to run a room air conditioner in every state

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How this is calculated

Annual energy use is the figure ENERGY STAR lists for this model under typical test conditions. It is not measured in your home.
Yearly cost = annual kWh × your rate. Monthly cost is the yearly cost divided by 12, a flat average. Five-year cost keeps the rate constant; prices will change.
Statewide averages are not your utility’s tariff. Use your bill’s rate for a closer number.
We do not estimate watts or hourly cost: the source data does not include them.

How it compares

Among 149 ENERGY STAR certified window models with a similar cooling capacity (5850 to 9750 BTU/h), this one ranks 135th lowest in annual energy use.

Median of these models: 400 kWh/yr
This model vs the median: +7%
Uses less than: 3% of them

281 kWh/yr (lowest)462 kWh/yr (highest)

Compared with every comparable model on the ENERGY STAR list, not only the ones published on this site. Same type, similar size.

Same type and size, lower energy use

Model	kWh/yr	Difference
TCL T06WQ2S	329	329 kWh
TCL H6W4KW	329	329 kWh
TCL T06WV9R	329	329 kWh
TCL T06WV9RB	329	329 kWh
Vissani VAW06V1KWTS	329	329 kWh

Yearly cost by state

Same 427 kWh/yr at each state’s average residential price (2026-07).

Comparable models

Same type, within 25% of this model’s cooling capacity.

Specifications

Annual energy use: 427 kWh/yrENERGY STAR estimated annual energy use, typical use (DOE test procedure)
Cooling capacity: 7800 BTU/hRated cooling capacity
Combined energy efficiency ratio: 13.7 BTU/WhCombined Energy Efficiency Ratio
Below federal standard: 25 %As published by ENERGY STAR
Type: Window
Product class: 2. Without reverse cycle, with louvered sides, and 6,000 to 7,999 Btu/h
Installation: Does Not Straddle Window or Windowsill
Heating mode: No
Variable-speed compressor: Yes
Voltage: 115 V
Height: 12.1 in
Width: 16.0 in
Depth: 13.3 in
Weight: 33.1 lb
Refrigerant: R-32
Refrigerant and GWP: R-32 (GWP:675 | Lower GWP)
Connected: No
UPC: 810194531446
Markets: United States, Canada
Available on market: 2026-09-29
ENERGY STAR ID: 4713456

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Frequently asked questions

How much electricity does the BLACK+DECKER BDM078C use?

ENERGY STAR lists 427 kWh per year under typical test conditions, which is calculated with U.S. Department of Energy test procedures for a typical cooling season. Your use will differ with the climate, how many hours a day you cool and the temperature you set.

How much does it cost to run?

At statewide average residential prices, the listed annual use costs about $54.31 in Louisiana and $204.96 in Hawaii (EIA, 2026-07). Your own utility rate may be different; enter it in the calculator.

How does the BLACK+DECKER BDM078C compare with similar models?

Among 149 ENERGY STAR certified window models with a similar cooling capacity, it ranks 135th lowest in annual energy use. Its 427 kWh per year is 7% above the median of 400 kWh.

What does the CEER number mean?

The combined energy efficiency ratio is the cooling output in BTU for each watt-hour of electricity used. This model is listed at 13.7 BTU/Wh. A higher number means more cooling for the same electricity.

Learn more

Methodology and sources

Model data comes from the ENERGY STAR Certified Room Air Conditioners dataset (EPA). Electricity prices are statewide average residential prices from the U.S. EIA, latest period July 2026. Values are stored locally and refreshed by scheduled imports. Missing values are left blank, never estimated.