HVAC blowing out of returns
 

I have an HVAC system in my new office that is blowing, actually blowing forced air out the main return and very little is coming out of the registers. Anyone have any ideas about this.

Who is the MFG, model number, has the unit been serviced recently? How old is the unit?

Oh, and :welcome: to House Repair Talk!

Did you recently have the furnace replaced?