North Valley Mechanical sent out a technician after we called Fidelity Home Warranty. One of our vents was not flowing heat or air conditioning. The tech said that our furnace was not strong enough and that is why we were not getting air. Told me that the duct work was well sealed.
Had a duct contractor come out and said the duct that was not flowing air had been collapsed because it appeared that someone stepped or fell on it. That the duct was open and the air was blowing freely into the attic and that was why it was not flowing through the vent. They also found that all of the duct work needed sealing and was not "well sealed".
North Valley Mechanical would not return the money we paid them to come out.
They don't have to worry about us calling them again.