Condar recommends the ASV to ensure your compliance with manufacturers’ safety instructions, which require a source for air
replenishment for any room with a ventless gas stove or gas logs, kerosene heaters or any other unvented product. You should
seriously consider installing at least one if a house is under construction, or built since 1980. Also, if your house was
built before 1980, an ASV is recommended if the house is “weatherized” – or you’ve already learned you must sometimes open a
window for proper “draw” of your fireplace or wood stove.
Many houses today are very tight, with insufficient air changes. You experience lingering odors, moisture, and generally stale
air. When you add a combustion appliance, the need for fresh air becomes even more obvious. By using the ASV, you take control
over how fresh air enters your home.