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Department of Energy

AWEF

The Annual Walk-In Energy Factor (AWEF) is an efficiency metric that measures electrical energy input versus the cooling capacity of the system.

The Department of Energy (DOE) recently proposed and implemented a set of standards to regulate energy consumption in the United States. The law mandates every product that consumes energy should follow a set standard defined by DOE. All commercial refrigeration equipment manufacturers should comply with the Annual Walk-In Energy Factor (AWEF) rating defined by the DOE. Fundamentally, the ruling will reduce energy consumption and increase efficiency of commercial refrigeration equipment.

 

Products & Applications

  1. Condensing Unit: Contains compressor & condenser coil
  2. Unit Cooler: Contains evaporator coil and air mover
  3. Packaged Unit: Standalone, self-contained refrigeration system
  4. Medium Temperature: Applications where box temperature is 32°F and above
  5. Low Temperature: Applications where box temperature is less than 32°F

Resources

Compliance Date

Product Type

Unit Capacity Range (BTU/h)

Minimum AWEF (BTU/W-h)

January 1st, 2020

June 10th, 2020

Dedicated Condensing Unit (CDU) & Packaged Systems – Medium Temp Indoor

Dedicated Condensing Unit (CDU) & Packaged System - Medium Temp Outdoor

Dedicated Condensing Unit (CDU) & Packaged System - Low Temp Indoor

Dedicated Condensing Unit (CDU) & Packaged System - Low Temp Indoor

Dedicated Condensing Unit (CDU) & Packaged System - LowTemp Outdoor

Dedicated Condensing Unit (CDU) & Packaged System - LowTemp Outdoor

Unit Coolers - Medium Temp

Unit Coolers - Low Temp

Unit Coolers - Low Temp

All

All

0 – 6,499

6,500+

0 – 6,499

6,500+

All

0 – 14,999

15,000+

5.61

7.6

1.81 to 2.39

2.4

2.73 to 3.14

3.15

9

3.91 to 4.14

4.15

Responsible Parties

The responsible parties include:

  • Manufacturers who build, certify and mark equipment that is compliant.
  • Individuals selecting equipment for covered installations should use compliant equipment. These are often contracting companies or OEMs, for example.
  • Any party who selects or uses non-compliant equipment for applications requiring compliance can bear liability.

 

Build & Installation

  • The compliance date is based on manufacturing date, not the installation date.
  • The replacement equipment must be either compliant or manufactured prior to the compliance date.

 

Enforcement

  • Industry personnel are best able to identify non-compliant installations & equipment.
  • The DOE will conduct random checks to ensure equipment meets advertised efficiencies and required minima.
  • DOE prescribes an “express lane” to report violators, so it is important to be complaint and avoid severe penalties.

Select a Brand: Bohn | Larkin | Climate Control | Chandler

Heatcraft Worldwide Refrigeration provides climate-control solutions for commercial refrigeration and industrial applications. We manufacture unit coolers, condensers, compressorized racks, condensing units, refrigeration systems and supermarket display cases through six market-leading brands, including Bohn, Larkin, Climate Control, Chandler, Kysor/Warren and InterLink. Heatcraft Worldwide Refrigeration is a business segment of Lennox International Inc., a leading global provider of climate-control solutions.

© Copyright Heatcraft Worldwide Refrigeration 2018. All Rights Reserved.

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Compliance Date

January 1st, 2020

June 10th, 2020