ZAFRO 54091EWA1-8K-ZAZ Energy Use and Running Cost

Running cost calculator

Where your state sits among all 51

$51.17 Nevada$189.81 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 212 ENERGY STAR certified window models with a similar cooling capacity (6075 to 10125 BTU/h), this one ranks 95th lowest in annual energy use.

Median of these models: 415 kWh/yr
This model vs the median: -3%
Uses less than: 55% of them

308 kWh/yr (lowest)528 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
ZAFRO 54091EWA0-6K-ZAZ	308	308 kWh
ZAFRO 54091EWA0-8K-ZAZ	373	373 kWh
Midea 1010451315	375	375 kWh
Midea MAW08U1QWT	375	375 kWh
Midea MWAUQB-08CRFN8-BCP0	375	375 kWh

Yearly cost by state

Same 402.300 kWh/yr at each state’s average residential price (2026-08).

Comparable models

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

Specifications

Annual energy use: 402.3 kWh/yrENERGY STAR estimated annual energy use, typical use (DOE test procedure)
Cooling capacity: 8100 BTU/hRated cooling capacity
Combined energy efficiency ratio: 15.1 BTU/WhCombined Energy Efficiency Ratio
Below federal standard: 54 %As published by ENERGY STAR
Type: Window
Product class: 11. With reverse cycle, with louvered sides, and less than 20,000 Btu/h
Installation: Straddles Windowsill
Heating mode: Yes
Variable-speed compressor: Yes
Voltage: 115 V
Height: 15.4 in
Width: 18.9 in
Depth: 30.4 in
Weight: 63.7 lb
Refrigerant: R-32
Refrigerant and GWP: R-32 (GWP:675 | Lower GWP)
Connected: No
UPC: 6980034711667
Markets: United States
Available on market: 2026-09-10
ENERGY STAR ID: 4719094

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Frequently asked questions

How much electricity does the ZAFRO 54091EWA1-8K-ZAZ use?

ENERGY STAR lists 402.3 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 $51.17 in Nevada and $189.81 in Hawaii (EIA, 2026-08). Your own utility rate may be different; enter it in the calculator.

How does the ZAFRO 54091EWA1-8K-ZAZ compare with similar models?

Among 212 ENERGY STAR certified window models with a similar cooling capacity, it ranks 95th lowest in annual energy use. Its 402.3 kWh per year is 3% below the median of 414.5 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 15.1 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 August 2026. Values are stored locally and refreshed by scheduled imports. Missing values are left blank, never estimated.