AFUE, SEER, and HSPF Mean a Lot When it Comes to Your HVAC System By Stack Heating, Cooling, Plumbing & Electric|May 29, 2014|Air Conditioning, HVAC System| One of the most important steps in assessing an HVAC [...] Read More Comments Off on AFUE, SEER, and HSPF Mean a Lot When it Comes to Your HVAC System