A direct vent system typically results in lower water heating costs because the exhaust gases are vented vertically with no extra power required as is the case with the power vent water heater.
Power vent tankless water heater.
However this doesn t have to be the case and usually isn t.
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In fact tankless water heaters save up to 16 square feet of space.
Power vent units use indoor air for combustion and simply vent the exhaust to the outside.
This configuration allows tankless units to fit in smaller spaces.
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Direct vent and power vent.
Direct vent units pull in air from outside the home or building and have two vents one for intake and one for exhaust.
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As for which exactly one is the best way to vent tankless water heater it depends either on your applications or on your using places.
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Tankless water heaters are ventilated in two ways.
When installed correctly both best direct energy tankless water heaters and best power vent tankless water heaters can offer you with best and most satisfying user experience.
Tankless water heaters can be vented in two ways.
Power vent and direct vent.
Gas tankless water heaters don t have to use indoor air for combustion.
Direct vent units pull in air from outside the house so they have two vents for intake and exhaust.
Because of their unique construction power vent water heaters are virtually impossible to backdraft.
When many consumers learn that a gas powered tankless water heaters must be vented they immediately imagine costly and invasive carpentry work.
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Tankless water heater venting can be a quick and affordable job if you plan it right.
Direct vent water heater when using a direct vent water heater water is heated by the heat of fuel combustion.
Tankless water heaters are vented in two ways.
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Direct vent units attract outside air from the house or building while power vent units solely need an exhaust vent and should be installed in a larger area for receiving sufficient air amount for combustion.