What is the difference between a direct-vent and a power-vent water heater?
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A
There is no difference
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B
A direct-vent uses sealed combustion with intake and exhaust through the wall; a power-vent uses room air for combustion and a fan to exhaust through the wall
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C
Direct-vent is electric; power-vent is gas
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D
A power-vent uses natural draft; a direct-vent uses forced air