LIMITED USE: The 2024 I-Codes limit the amount of A2L refrigerant – such as R-454B -- that can be used for comfort cooling systems. August 22, 2025 As HVACR professionals grapple with the transition ...
FIGURE 1 - A TALE OF THREE TESTS: This minimum ignition energy (MIE) testing illustrates that much stronger ignition sources are required to ignite A2Ls than A3s. Once ignited, the A2Ls also burn much ...
Solution is the first with full UL Recognition for the use of R454A, R454B, R454C, and R32 under the 4th edition of UL 60335-2-40 Sensata Resonix™ RGD Sensor detects the presence of A2L refrigerant ...
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Getting an AC replaced in 2025, the question that tells you if the installer is up to date
If the answer you hear is vague, or the installer brushes off A2L refrigerants as “basically the same as the old stuff,” that is a red flag. Changes in equipment have driven changes in training, tools ...
Across nearly every industry, there has been an increased push for fuel and energy efficiency, as well as for a reduction in the impacts of global warming. Among these industries, the heating, ...
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The safety note homeowners should know about new refrigerants without getting freaked out
New refrigerants are arriving in American homes at the same time you are being told they are both better for the planet and “mildly flammable.” That combination can sound unnerving if all you want is ...
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