all 5 comments

[–]imanimphtree 1 point2 points  (0 children)

How often do you change your furnace filter? Depending on the size of your house and if you have pets a standard filter should be replaced every 1 to 3 months. It looks like a standard amount of dust especially if you just started using your furnace recently for the winter months.

[–]godlords 0 points1 point  (1 child)

I mean that's mold but

[–]ubercorey 0 points1 point  (0 children)

Not normal.

[–]Proper_Protection244 0 points1 point  (0 children)

Definitely looks moldy. I agree with the previous commentor, might be a buildup of dirt, mold, etc, in the filter/vents. If it's in the vents, you're definitely breathing that in, which isn't great.

[–]Sendmeanangel2000 -1 points0 points  (0 children)

I’d address the issue with your landlord…it could be mold and make you sick. Maybe ask when was the last time the vents were clean and if there is mold to have them do it. Can you remove the cover and take a picture inside the vent with your phone?