AWEF stands for Annual Walk-In Factor which is ultimately a ratio: total heat (Btu) from a walk-in box to total energy input (watt hours) during the same one-year period.
Since coming into effect, we have received various questions about these new regulations and staying true to Our Continued Commitment to the Refrigeration Professional, we are here to answer any and all of your AWEF questions.
Let’s start with why these regulations were put in place. These new AWEF rules require significant energy reductions for condensing units and evaporators used in commercial walk-in and freezers under 3,000 ft2.
These regulations were put in place because it establishes efficiency minimums for refrigeration equipment used with walk-in coolers and freezers, including condensing units, evaporators and self-contained refrigeration.
AWEF requirements demand significant changes in the sale and manufacture of refrigeration equipment in Canada and the USA but will reduce energy consumption and increase the efficiency of commercial refrigeration equipment.
Generally speaking, the products and equipment that are affected most by the AWEF regulations are refrigeration systems covered by walk-in coolers and freezers (WICF) standards. This includes a packaged dedicated system (i.e. a matched evaporator and condensing unit sold as one package), a split, matched dedicated system (i.e. a matched evaporator and condensing unit sold as two parts), and a split system that is not matched.
As of January 1, medium temperature air-cooled condensing units must be compliant.
However, every non-compliant condensing unit manufactured up to December 31, 2019 can be legally sold at any time after. The serial number on the units can be used to determine the date of manufacture.
Equipment used in walk-in coolers and freezers that are equal to or greater than 3,000 ft2 will be exempted.
Additionally, water-cooled units/systems, compressor units with remote condensers, and equipment intended solely for medical, scientific and research applications will be exempted.
Lastly, multi-compressor condensing units solely designed to serve multiple WICFs or other pieces of refrigeration equipment will be exempted. These are often referred to as “multi-plex” condensing units, including parallel racks and KeepRite Refrigeration’s LINK/LINK+ distributed systems.
It is the responsibility of the manufacturer to certify its equipment to be manufactured and sold as compliant.
It is the responsibility of those assembling/installing the system to use certified equipment for retrofitting existing jobs and/or for new installations.
As of January 1, 2020, KeepRite Refrigeration now offers a complete line up of “Generation D” condensing units that meet or exceed the new requirements for condensing units, including compliant Medium and Low Temperature versions.
KEH “Generation D” Hermetic Air-cooled Condensing Units:
KEZ “Generation D” Scroll Air-cooled Condensing Units:
Product Specifications: https://docs.k-rp.com/1108861.pdf
KES “Generation D” Semi-hermetic Air-cooled Condensing Units:
Product Specifications: https://docs.k-rp.com/1108867.pdf
In addition, our KQ Quiet Condensing Units and KMS/KMD Condensing Units can also be used in applications requiring compliance:
KQ “Quiet” Scroll Condensing Units:
KMS/KMD Air-cooled Condensing Units:
With 75 years of experience in commercial refrigeration, KeepRite Refrigeration is always ready for any change that comes our way, including the next set of rules that will take place July 10, 2020. These policies will affect low temperature air-cooled condensing units, as well as medium temperature and low temperature evaporators.
Stay tuned as we will provide you with updates as these new regulations come into place as well.
Have more questions about these regulations, AWEF, WICF, etc.? Be sure to check out our AWEF FAQ page, feel free to call your local sales representative, or our Small Condensing Units product specialists at 1-844-893-3222 ext. 521.
As the changes continue to move forward and new regulations get introduced, you can trust KeepRite Refrigeration to always keep you informed as Our Continued Commitment to the Refrigeration Professional enters its 75th year.