Hi, I had a new HVAC system installed a few months ago. All of a sudden today, from one of the vent, we are getting a burnt like smell coming from one vent. i checked down stairs where the unit is and i don't smell anything. When the floor where the vent is, the smell is strong. Any clues as to who to determine what this is? Other than that smell, which is starting to fill the house...the unit seems to be working fine.
(Unfortunately, i can't call the contractor that installed the system because he's just disappeared...no one seems to be able to get a hold him..).