A power vent is a fan-assisted exhaust system used in gas water heaters and boilers to push combustion gases safely outside. Unlike natural draft systems, power vents do not rely on rising hot air, allowing more flexible installation and horizontal venting. They improve safety by actively removing combustion gases and can increase efficiency in certain setups.
/ˈpaʊər vɛnt/
A power vent is a fan-assisted exhaust system used in gas water heaters and boilers to push combustion gases safely outside. Unlike natural draft systems, power vents do not rely on rising hot air, allowing more flexible installation and horizontal venting. They improve safety by actively removing combustion gases and can increase efficiency in certain setups.
What does a power vent do?
It uses a fan to expel combustion gases safely outside instead of relying on natural draft.
Source: The Cooling Company
Fan-assisted exhaust enables flexible vent routing.
During a remodel without chimney access, a homeowner installs a power vent water heater that exhausts horizontally through an exterior wall.
Ensure compatible vent materials and a nearby electrical outlet, and schedule routine vent system maintenance for safety.
“Ensure compatible vent materials and a nearby electrical outlet, and schedule routine vent system maintenance for safety.”
Power venting expanded safe gas water heating to homes without vertical vent access.
Is a power vent louder than a natural draft heater?
Often yes, due to the exhaust fan, but placement can minimize noise.
Do power vent units need special venting?
Yes. They require compatible vent materials and proper sealing.
What happens if power goes out?
The fan stops, so the unit cannot operate until power is restored.
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