|If you are venting the exhaust from your furnace and/or water heater into a
masonry chimney... You need a liner.
The ChimPro System is more than just a safer vent for your furnace
exhaust. It's a complete solution that modernizes your home ventilation. We recommend a
balanced vent sytem that supplies the right amount of fresh air to replace the oxygen used
by your appliances. Learn how correct air exchange can improve your heating and cooling
system by visiting our Ventilation page.