I had a brand new Goodman unit installed about 45 days ago, and it has never worked right. It runs constantly, heats poorly (I haven't made it to summer yet but I know what to expect) and the noise – – ooohhhh the noise – on startup and shutdown is nothing short of incredible. I've paid for service calls to have the dealer come out. I refuse to have the idiot installer back into my home again – he hacked it up terribly. It took him 2 weeks to complete a single day install and he has been back twice to correct an incorrectly wired thermostat, then he claimed I had 'sabotaged' his work. You know us homeowners; who would sabotage our own systems and sit in the cold for a week just to have the doofus installer come back out so I could spend two hours looking at his butt- crack? The dealer I've had to pay to come out and tell me the unit is designed to run constantly when cold out and the startup noise is "normal" for the type of compressor. If so, why does Goodman advertise the scroll compressors as "The quietest there are"? If I had wanted an extremely noisy unit I'd have sought one out and purchased one (intentionally, that is). I've had heat pumps all my life and have never had one this noisy. It wakes me from a sleep. I have 2 York units at work and they start and stop without the 'hanging up' growl that lasts about 2-4 seconds, and stopping with a bang that this unit features. I replaced a 20-year-old Comfortmaker oil furnace and AC system that worked for a more efficient and newer Goodman unit, and I wish I had that old unit back. For all of its faults, and the cost of oil, it did work properly and didn't wake the neighborhood in doing so. Goodman service is a joke – no help from them at all. It's a damn shame when you have a brand new unit, less than 30 days old, that has never worked, and you have to pay out of pocket for a service call only to be told the operation is normal and you'll just have to live with the noise. All Goodman units are noisy and that's just how they are. I'm just about ready to take it out in the yard and make it provide more heating that it ever has, by lighting it on fire in the front yard. At least I could get some heat from it then. I wonder if Goodman would consider a flaming unit 'standard operation'? Trane units, Comfortmaker units, York units don't sound like this (I've checked) and they use the exact same Scroll compressor and R410A setup. Goodman has my money and they don't want to hear anything about providing me with a fair shake. I guarantee that next time I have a unit installed nobody will get a dime until it's properly installed and operating. My advice to anyone who reads this – run from Goodman, far, far away, as fast as you can.