What is the HSPF rating for a .75 and 1.0 ton system?

This 9,000 BTU or 0.75 ton Perfect Aire DIY unit has an HSPF rating of 10. A 12,000 BTU or 1 ton Perfect Aire DIY would have an HSPF rating of 10.5. For more assistance, please give us a call at 1-888-376-7450.