Power Direct Vent Water Heater Definition

A power vent water heater uses a fan or blower to assist in the removal of exhaust gases from the hot water heater. 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. Powered direct vent systems include an exhaust fan to aid in the expulsion of combustion gasses.

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In some situations this may be the only type of water heater that makes sense because a chimney or vertical vent is not necessary.

Power direct vent water heater definition. The air is drawn from outside using a vent pipe and a rotatable motorized blower forces the exhaust outside. Some locations don t have access to a chimney or vertical vent so your options are limited. Also because they vent thru adjacent exterior wall they are typically easier to install. Power direct vent gas water heater.

If the water heater is installed in a location that doesn t have access to a vertical vent or chimney a power vent water heater may be your only option. Exhaust gases can be pushed through horizontal exhaust pipes with the use of a fan or blower. Instead buoyancy forces air from the outside through the water heater combustion system and finally exhausts the combustion gases to the outside. Power vent models operate similarly to atmospheric vent systems but an exhaust fan is added to aid in the expulsion of combustion gases.

Direct vent systems do not use room air for combustion. A direct vent water heater draws all its air for combustion from the outside and returns the combustion gases to the exterior in essentially a sealed system. A direct vent system pulls in. Graywood cook jan 29 2017 10 47pm 34.

A power direct vent heater is ideal when using inside air for combustion is not an option and a longer vent run is required possibly as a result of the heater being in a smaller room that does not have a wall facing outdoors. Nic o neill at haley mechanical in ann arbor michigan explains the difference between a direct vent and power vent water heater. There is no chance of backdrafting and no negative air pressure created inside the home. Now i dread the moment my power direct vent hot water heater comes on due to the noise of the fan inside outside the house.

Power vent water heater. A power vent water heater uses a blower or fan to exhaust gases by pushing them through vent pipes that are horizontal. Another perspective on why you might not wish to use a power vent is if you used a direct vent gas water heater certified for combination use in space heating as a source for backup heating when the grid goes down during a.