Chimney venting may not be the the new furnace vents directly through the wall to the exterior.
Can I Vent My Hot Water Heater Through The Wall. Single wall vent pipes cannot pass through a ceiling, floor, firewall, or wall. We generally do not use hot water for clothes washing.
Power vent water heater troubleshoot from waterheatertimer.org
A combustion appliance that burns fuel such as gas must vent the exhaust fumes to the outdoors through a flue (a round chimney pipe). Both abs pipes are going through the outside house wall. My brick chimney that goes from the basement, through the first floor had to drill a hole through my exterior wall for the new vent pipe, seal and caulk the hole.
The water heater is in my bathroom (12.5′x7.5′) on an outside wall and sits on a concrete slab foundation.
Hot exhaust from the water heater naturally rises up through the vent and into the air outdoors, creating a draw that promotes this upward airflow. As water heats up, it expands with tremendous force—enough to fracture the tank and launch the water heater through the roof. Hot water heaters and other fuel venting appliances must have vents sized according to code. The water heater is in the basement.
