Re: No Heat on Second Floor
Unfortunately it's sight unseen from here ...... I would be guessing the furnace is located in a basement ?
If that's the case there is a considerable distance the air needs to flow. Many things can cause lack of air flow .... for example ....... undersized ducts or improper connections...... leaking ducts ...... etc..
A heating ( HVAC ) contractor should be called to evaluate the situation first hand.
They can perform tests measuring the amount of air flow ( CFM) that are being delivered through those vents.