Guest User February 28, 2017 1st 30 posts Natural Refrigerants Workshop - March 30th! Guest User February 28, 2017 1st 30 posts A snapshot from NASRC's August 4th, 2016 workshop (that one focused specifically on utility incentives for natural refrigerant equipment). NASRC is hosting a natural refrigerants day-long FREE workshop. View the invitation and RSVP here.