Combustion Air For Power Vent Water Heater

A direct vent water heater draws air for combustion from outside your home rather than inside.

Combustion air for power vent water heater. Makeup combustion air for the water heater is via a floor vent to the crawl space and a ceiling vent to the unheated attic above. Top considerations before purchasing a water heater with power vent. The difference is that a power vent water heater pulls in combustion air from the space around the appliance then uses a fan to propel the exhaust through the vent. The exhaust gases and excess heat produced by your water heater are then vented back outdoors.

Exhaust gases are vented outdoors through a separate vent duct or through a separate chamber of the same pipe this requires a double wall vent duct. Around the water heater. A direct vent system pulls in. The main difference between power vent and direct vent is that dv pulls intake combustion air from outside where power ven uses air from inside.

Enclosed areas just as closets might need air ducts and extra air inlets. The models which need combustion air from the outside are required to have a second hose which is supposed to be put in. The ceiling vent is a 6 inch rigid vertical circular air duct that opens to the attic and extends about 4 feet up from the utility room ceiling. Direct vent water heaters.

Therefore a power vent system should be placed in an open room where there is airflow.