Direct vent vs. power vent gas water heaters
A recent blower door test/audit has alerted me to the fact that my natural draft hot water heater can backdraft in worse case scenarios (range hood/clothes dryer/bath fan on). It seems to reverse back to a correct draft after a few minutes. It’s only about 6 yrs old, so I hate to replace it, but not as much as I hate the idea of the back draft.
So, it seems my options are power vent or direct vent (with exterior air intake/exhaust, but no fan/electricity required). I can’t think of a reason why I would want the power vent when the direct vent would be more quiet and not require electricity. Why would I use a power vent unit?
House is in Minneapolis.
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