Home / NRCan Bulletins / Program Bulletin #89: Reminders and updates pertaining to cold climate air source heat pumps (ccASHPs)Program Bulletin #89: Reminders and updates pertaining to cold climate air source heat pumps (ccASHPs) March 9, 2022June 14, 2026 Share The following applies to all users of the EnerGuide Rating System and ENERGY STAR for New Homes. Login required to view full content.