“Natural” Propane a Future Option for Residential Heat Pumps?
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HFC refrigerants are being phased out due to their high global warming potential (GWP). The “natural” refrigerant R-290 (propane) has emerged as an increasingly viable low-GWP alternative. However, current US safety standards limit refrigeration system charges to 0.33 lbs (150g). Read more in this members-only blog.
David C. Bixby has been active in HVAC industry codes and standards for 35 years and is currently secretary for the ACCA Codes Committee.
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