dk wrote:
I have a cooktop exhaust vent that is routed to the outside of the
house. On the outside of the house there is a vent with a flat on it.
Unfortunately the flat on the vent never closes - letting cold air in
throughout the winter months.

Where do I find a replacement vent( I didn't see it at the home
deopt)? Is this a job for a hvac guy?


An HVAC guy will use a bit of toilet paper to gauge the extent of the
problem, then you'll know what you're dealing with.