Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit

Humidifier installation

zepfan Member Posts: 314
We have a customer that is in need of a humidifier, and their below pictured air handler is installed in a closet where the return air is drawn through the louvered door to the closet The air handler sits on a base box above the water heater. The box is just tall enough for the air filter, no where near enough room to mount a humidifier. I was thinking of mounting a bypass unit directly on the side of the air handler, right above the coil. This is still return air, and then I would run the bypass duct to the top of the unit, and use a square to round to make the connection. Has anyone done this before, and do they have any thoughts on this type of install? I have installed plenary of humidifiers, but not with this type of setup. Thanks to all.


  • motoguy128
    motoguy128 Member Posts: 351
    Humidifier air ideally returns before the air filter. The bypass type disperse a lot of fine dust from evaporated salts. Might not be a big issue. The coil worms flush it off in the summer.

    I think your idea will work. Not ideal but little equipment closets suck. What are you going to do.
  • mel57
    mel57 Member Posts: 4
    Have never mounted the unit directly on the air handler. Usually, we mount it remotely on a box and run a duct from the box to the side of the air handler. The concern is the amount of pressure drop through the a/c coil, verses the humid pad. Pulling water off the pad and into the blower.
Sign In or Register to comment.


It looks like you're new here. If you want to get involved, click one of these buttons!