High Efficiency Gas Furnace Combustion Air Intake

Check to see if the furnace combustion problem is caused by an obstructed air supply pipe by removing the burner compartment cover.

High efficiency gas furnace combustion air intake.

The pvc pipes are used for air intake exhaust gas and to remove the corrosive condensation resulting from the combustion process. According to the u s. Since high efficiency furnaces draw air directly from outside the furnace itself does not require a fresh air intake in order to replace inside air. An obstructed air intake vent pipe in a direct vent two pipe system will cause serious combustion problems in a condensing furnace.

Other aspects of high efficiency furnace venting there are several other important aspects of high efficiency furnace venting. This will provide free airflow to the combustion chamber. These types of furnaces have a dedicated pipeline that runs directly from an outside vent into a sealed combustion chamber of the furnace and a sealed vent to the outside of the home for venting the toxic fumes from the combustion process. However condensing furnaces can also be installed as single pipe non direct vent configurations in which the combustion air is drawn from the indoors.

Department of energy a defining feature of high efficiency furnaces is sealed combustion a process by which outdoor makeup air is piped directly into the burner. This high efficiency venting system must be installed when you install the new furnace. The combustion air intake usually is piped from the exterior of the home to the furnace.