Quote Originally Posted by Rocket468 View Post
Its a package unit, don't need to touch refrigerant as its already charged, hence why i don't need a 509 to buy it. And you don't need 509 to get a city permit either. Homes never used r12 they used R22 and most of the newer are already 410 The goodman above is r22 and the other is 410.
What is 509? Are you thinking 609? The EPA certification for MVAC (cars) is 609...for the "non-automotive" you need 608. Right now it is looking like 410a is the direction things will go, but it may just as likely occur that a different refrigerant will become mainstream before it is all said and done. 13 SEER is the minimum you will see on anything anymore. Is the $1500 a credit or a deduction? That makes a big difference. R-11 and R-12 were used in "home" applications, but not a lot.