A lot of it is managing the air barriers (not vapor barriers!) and sealing the house to prevent air leaks.
But if you're concerned about air quality there are some major things you can attack first - water heater being electric or forced-vent, furnace being forced vent, etc.
The less "burning" inside the house the better off you'll be to start.
But if you're concerned about air quality there are some major things you can attack first - water heater being electric or forced-vent, furnace being forced vent, etc.
The less "burning" inside the house the better off you'll be to start.