Chris wrote in news:BBTrh.166183$YV4.155356@edtnps89:

Hello,

I have an exterior attic vent under the over hang of my roof. The vent
is 4" (I think) in diameter. The vent is one of those air-intake vents
with rain guards.

For the last few days it's been below freezing. On those cold days,
icicles appear on the rain guards. The house has an air exchanger
(non-heat recovery) which has been running on those cold days. The
house seems to retain a lot of moisture as the windows tend to either
have condensation or ice at the bottom when it's really cold outside.
Also, the house is heated with electric baseboard heaters.

Before I climb into the attic, I was just wondering if the icicles on
the exterior attic vent is normal? I'm a first time home buyer and I
do not know much about attic ventilation. My concern is that there may
be moisture build up in the attic.

Thanks,

Chris


Icicles from vents are not normal. Icicles obviously are water. Moisture
vapor is water. Check out where your dryer is venting and if any of the
piping for it is leaking. Bath fans as well.