Where do I install a furnace humidifier when there is no room?
Deciding where to mount a humidifier becomes difficult when limited space or confusing duct layouts make proper placement unclear. People get stuck wondering if side mounting or alternative ducts will work, preventing them from getting the system up and running safely.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Trying to visualize options using AI simulations or asking for community advice on placement.
- 2Looking into a bypass humidifier due to limited plenum room
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Is this humidifier mounted on the right duct? Just bought the house and it doesn’t seems to work and it was also disconnected.”source ↗
“i’m not 100% sure where it should be installed on the furnace. Unfortunately i can’t add it to the duct above it (no room) but i was thinking on the sides.”source ↗
Where this came up
People with this problem also raised
- 4Can I drain my dehumidifier into an unknown basement pipe?
- 8Where is the air filter slot in this house?
- 8Where do I run the vent for a washer installation?
- 16How to know if my HVAC air filter is the right size?
- 7How to figure out correct plumbing and venting requirements for a remodel
- 2How to secure a horizontal evaporator coil to a furnace