Nothing but problems. Worked fine for 6 months and I was happy. The problem is the "Plug and Play Shit". There are 7 fittings they these jokers at FROSTBOX jimmy rigged. Overtime they leaked first time at the condenser the second 4 months later they leaked again at the air handler. TOTAL BULLSHIT! PISSED ME OFF BIG TIME. When they sell you the Frostbox unit with the "pre-charged lines" The lines are suppose to have freon in them. They don't. They advertise precharged. But what is precharged is just the condenser unit which is good for 25 feet of line. But the copper lines bought from Frostbox is 50 feet of lines. So your already running short on cooling freon in you system. Ask any air conditioning HVAC tech about having 7 fucking fittings on the end of each copper feed line from the air handler connection to the condenser. Guaranteed they will look at you like your fucking nuts. It just means you have 14 opportunities for a leak at some point. They will leak. I promise. Please don't tell me FROSTBOX kiss asses, flag waivers and GreenCoast workerbees that use this forum that I put it on wrong because I didn't. It only goes on one fucking way or it doesn't thread. When it does fail and it will fail who you gonna call? Better have an HVAC guy on stand bye. Because if not your fucked and so is your crop. AVOID THE FROSTBOX 3 ton and 5 ton industrial units. Buy a regular 5 ton unit and have an HVAC guy do it right the fucking first time before you plant anything in beds or DWC. I'll post some photos of these "Plug and Play" fittings that Im ready to throw through the front window of FROSTBOX or Greencoast corporate offices. FrostBox is a Goodman air cond. It says it right on the inside of the fucking air handler. Frostbox bought the air conditioners from Goodman and retrofitted with these stupid fittings. Don't make the same mistake I did. Am I the exception the to rule? Maybe but the exception proves the rule, their system failed. Why take the chance.