Anybody else having trouble with high efficiency furnaces in this cold

Took all day, have decent heat now.


High efficiency furnaces have intake and exhaust, I felt it sucking earlier and didn't much more about it.


Checked again and jammed a stiff wire up the intake, has a 90 degree elbow and couldn't see. There was blockage, it wasn't getting enough through the snow blockage.

Noticed better exhaust right after.



Nothing like learning furnace repair at 1 am at -9.