I live in an apartment building (built in the 70's I think) in PA. We just got a 'whole house' humidifier
that you're supposed to place next to the furnace air intake. When we did this, we noticed the humidity in the apartment didn't really increase much, even in the room it is running (living room).
So today I took off the cover of the air intake vent to clear dust out of the grate and this is what it looks like inside: (for an idea of scale, this goes back about 3 feet)
The pvp pipe I'm assuming is a gas line, the cord in front is a phone line that's been run through. It's all (bottom, top, sides) plywood. I was surprised and expecting an actual vent instead of piles of dust, fragments of insulation, and wood.
This crawlspace goes outside to our balcony. On top of the crawlspace sits an outdoor closet with our furnace on it. I'm guessing there's an air intake somewhere on the top of the crawlspace in the back. Here's a photo of the outside closet:
The crawlspace portion here is caulked, but not really well. There's a huge gap under the door of the closet as well. So possibly, I'm wondering if the humidified air from our living room is just getting pulled outside. I tested the indoor vent when the furnace was on (using a strip of paper towel) and there was significant air being pulled in. I think there was air being pulled in through cracks outside in the wood frame of the crawlspace, but it was difficult to tell since it is windy).
I should add, we have no problem keeping our apartment warm and there is of course an air filter on our furnace (though I've always thought our apartment gets dusty quickly for some reason).
Sorry I'm a complete novice at this, but I'd appreciate thoughts on peoples opinions on how they've set up our air intake and if there's anything I should do/have the landlord do to make the situation better.
Thank you for the help.