My first unit was a Goodman and it lasted from when the house was built in 1998 to 2017. It ran well and was the older R22 freon. The unit I got now is a Carrier unit and it works fine but one thing I notice is this is the newer type freon and a rotory type compressor. The newer units run at a much higher pressure then the old R22 unit. I do notice more noise from the compressor and the linset tubing...Kind of like a humming sound.