Jim wrote:
Hello,

I have a 2600 sq ft 4 level split home in Canada. It was built in
1985. This past spring we replaced our very non-effecient furnace with a
Tempstar 95% effecient gas furnace. It really is wonderful as the old
furnace would cause the house to feel sort of drafty and basement was always
cold etc... Now I have this furnace that I love to bits BUT now since it has
gotten colder outside these past two weeks, we have kept the doors and
windows closed and now have a high humidity problem inside the home IE:
fogged up windows (triple pane)...air basically feels clammy...bought a
humidistat and the house is sitting at around 50% humidity.... we use
bathroom fans in the shower, and have a fan over the stove when cooking that
we use all the time...we keep lids on pots on the stove etc...We have no
children and only the two of us in this home so no long lingering showers by
kids or anyone else....
I don't want to have to buy a dehumidifier over this new furnace..
sort of defeats the idea of trying to be energy effecient... Thinking of
trying to duct in an outside air source to feed the furnace?
Thoughts? Thanks... Jim


Hi,
Fresh air intake is two ways, one for combustion for the furnace and one
going into return air duct. Wonder if it is damper controlled and it is
operational in your case. Too air tight home definitely needs outside
fresh air in proper amount. My house is R2000 spec. We have damper
controlled outside air intake. Yet I am running a power humidifier in
the winter. I am in Calgary that is why. Our winter air is extremely dry.