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July 20, 2023

A2L Refrigerants Are on The Way!

The American Innovation & Manufacturing (AIM) Act directs the U.S. Environmental Protection Agency (EPA) to implement a phasedown of the production and consumption of HFCs by 2035. As part of this work the EPA has proposed a rule (expected to finalize Q3 of 2023) indicating that beginning January 1, 2025, the U.S. Federal Government will require Residential HVAC equipment to use refrigerants with a Global Warming Potential (GWP) of less than 700. This legislation directly aligns with Trane’s commitment to energy-efficient solutions and reducing our carbon footprint.

All refrigerant-bearing products in Trane’s premium and value portfolios, including heat pumps, air conditioners, air handlers, coils, packaged units, ductless, and light commercial products will need to transition to support future refrigerants. Currently, we do not anticipate any major impacts on the furnace product portfolio.

What does A2L mean? A2L is a refrigerant classification defined by ASHRAE 31. The first digit refers to toxicity. The A is a lower toxicity, the B is a higher toxicity. The numbering 1, 2L, 2, 3 refers to flammability. The lower the number, the lower the flammability. 2L is the lowest flammability classification, refrigerants with this classification are difficult to ignite and non-explosive.

The video below compares R454B and R32 refrigerants. It explains why Trane has chosen R454B.

Below are a few more important facts about the transition:

  • Equipment cannot be field converted due to required safety regulations, so you will not be able to field convert equipment from R410A to a future refrigerant.
  • There is no compatibility between the R410A and the new R454B or R32 refrigeration designs. Full refrigeration system replacement will be necessary. Furnace-only replacements remain unaffected.
  • The dry ship ‘loophole’ exercised during the R22 to R410A will remain closed for the upcoming transition. The DOE updated the rating procedures for dry shipment which significantly reduce the ability to qualify.

For more information on Trane’s refrigerant transition reach out to your local Ferguson HVAC Feild Service Representative.