Daikin is committed to R-32 as the best replacement for R-410A. This proven technology, found in over 280 million HVAC units across the globe, not only has two-thirds the GWP of R-410A, but can improve both part- and full-load efficiency by up to 12% compared to R-410A systems.
R-32 is a pure, single-component refrigerant. It doesn’t fractionate and, as a result, maintains performance efficiency over time.
R-454B, a proprietary blend, is comprised of R-32 (68.9%) and R-1234yf (31.1%).
Plus, R-32 is manufactured by numerous refrigerant producers. It’s readily available and there are no active patents on the basic molecule, unlike proprietary blends.