Because they have overhead!!Had an issue with my system recently. The furnace would come on but the fan/blower would not. Tech came out and said it was the pressure switch. He tapped it a few times and blew out the lines and it started working properly. He said sometimes cold will stick the solenoid open. They said if it happens again, they would replace the switch and quoted me $348 for the switch and install. I went on Amazon and bought an OEM switch for my Goodman furnace for $12.00 and just installed it myself. Everything is working fine. How could they possibly quote that much? Did I miss something? It seemed a very straight forward install to m
NoCAL