Bob and his crew just finished a new AC, gas furnace and electric water heater install. All done in 8 hours without running into any problems. 3 workers did everything including running the electricity for the hot water tank.
To my eyes everything looks solid and well built.
I didn't have to do a thing but turn on the thermostat. They will be back in the Spring to check on the new AC once the weather heats up.
Update: after the install the water pressure dropped. The plumber came back and increased the pressure by turning a valve for $74