I have a two zone system York diamond 90 furnace with Honeywell zone control
The 1st zone feeds the whole house both floors works ok. the 2nd zone feed one bedroom over the garage 24 sq also works good. But the noise the 2nd zone creates is unbearable a mostly blower noise. is there a way to turn down the blower speed on zone 2 only?
Sounds like a poor duct design. Is there a bypass installed? Sounds like they skipped that and needs to be done. Can't slow the blower, furnace will overheat worse than it is.
I have to agree with the bald one.
there is no bypass
sounds like i have to get someone down to take a look at it