When our house was built in 2005, we upgraded the heating/cooling system from baseboard to hydro forced hot air. We did this because we also installed central AC at the time. Our house has two zones, one upstairs and one for the 1st floor. The other day when it was really hot out, we turned it on both zones. The 1st floor unit blew pretty hard (you could feel it for a few feet away from the vents), while the second floor seemed to be on a very low setting. You couldn't feel the air coming out unless you put your hands directly over the vent. We had the second floor fan motor replaced a few years back. It seems to run fine and doesn't make any strange noises, so I'm wondering if it was intentionally set to come out this way or if I have a problem again. The air is ice cold so I don't have a problem there. I figured I'm get some advice to see if its necessary to call the repair man.
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2nd floor AC unit doesn't blow as hard as 1st floor question