In follow-up to the document that Tecumseh issued in June 2015 regarding recommended refrigerants, the company has continued to test various low-global warming potential (GWP) options with the objective of determining suitable replacements for R-404A and R-134a.

HFO refrigerants are actually unsaturated HFC refrigerants and are widely recognized as the next generation of refrigerants because of their environmental friendliness, cost-effectiveness, and great energy efficiencies.

Few developments in recent months concerning refrigerants have stirred up such intense interest as the efforts to introduce a product called Frost-22a to the farm-supply distribution market.

While much of the buzz at the AHR Expo was on dwindling supplies of new HCFC-22, reclamation of that refrigerant, and use of alternative HFCs in retrofits, a number of conversations centered on alternatives beyond familiar HFCs.