SEER, BTU, and Tonnage: An AC Buyer's Guide

https://mega-wiki.win/index.php/High-Velocity_AC_Systems_for_Historic_Homes

If you've started shopping for a new air conditioner, you've encountered a set of technical terms that can make the process feel more complicated than it needs to be. SEER2. BTU/h. Tonnage. HSPF2