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Old 04-16-2018, 07:21 PM   #30
AKDoug's Avatar
City: Kenai, Alaska
Country: USA
Vessel Name: Melanie Rose
Vessel Model: 1999 Willard PH
Join Date: Feb 2013
Posts: 840
Yes, you are expelling heated air, that's where the moisture leaves the interior of your vessel. Otherwise you just have heated moist air... I have passive vents (dorade vents) and block the intake vent so it exhausts through the bathroom vent. I close the bathroom door to slow down the air movement.

Dehumidifier is extra expense and equipment, boats aren't insulated enough that it makes much difference. Losing heated air is probably more efficient and lower cost than messing about with dehumidifiers and the extra space and power draw.

You can't really have warm AND dry if you heat interior air without either venting some warm (and moist) air out or having a dehumidifier.
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