Siegenthaler’s “Air-to-Water Heat Pump Fundamentals” now free for Members (and their friends)
Heat pumps are getting really popular and we need more people to install them. If you know somebody who might make the jump, here’s a fun way to give them a nudge:
Starting today, for a limited time, “Air-to-Water Heat Pump Fundamentals” is free for HeatSpring Members and their guests. Members can give the class for […]