Hey I have an 8 year old home with two Goodman split system heat pumps. By split system I mean the evaporator is in the the crawl space and the condenser is outside. (maybe I have it backwards?) Anyway I am losing coolant in the larger 4 ton system. A tech used some sort of leak detector 'sniffer' and states the leak is in the evap coils in the crawl space. He charged the system so I am cool while we figure out what to do. . . I have had two techs out from THE SAME COMPANY, different days. Tech A states Goodman is a great solid system albeit noisy, no need to replace the whole thing. Simply purchase and have installed the new evap coils. His cost estimate is $1200. Tech B states Goodman is total garbage, and I should can the whole thing and start over and take advantage of the tax credit. He says I could spend upwards of over $2000 to replace the coils only to have the crap Goodman system break again soon or I could spend $5000 on a brand new system and live happily ever after. %$#*&_)(&^&^$^%# Now what the heck do I do?