ARLINGTON, Va. — The Air-Conditioning and Refrigeration Institute (ARI) and the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) have jointly adopted ISO Standard 13256-1-1998, “Water-Source Heat Pumps — Testing and Rating for Performance: Part 1 — Water-to-Air and Brine-to-Air Heat Pumps: 10/24/2001” and ISO Standard 13256-2-1998, “Water Source Heat Pumps — Testing and Rating for Performance: Part 2 — Water-to-Water and Brine-to-Water Heat Pumps: 10/24/2001” as American National Standards.
The American National Standards Institute (ANSI) approved the standards as American National Standards following their adoption by both ARI and ASHRAE.