Dehumidifier will help
According to studies I read, basically, mold and mildew need something like 50% RH or higher to grow. Get a dehumidifier that has auto-defrost capability and a fan. No auto-defrost and the dehumidifier won't get, and stay, below 50%.
I'm using a 40-quart model because it was the smallest one with auto-defrost and it is set on the galley counter with the drain going into the galley sink.
Initially I used to have it set at 35% RH but to save energy I've had it at 45% RH lately. It uses less energy than those round "dehumidifiers" that are really just heaters so it actually cuts the electric bill. I'm currently in my fourth season with this. It's nice to go down below after the boat has been shut up for a month and it smells fresh.
According to studies I read, basically, mold and mildew need something like 50% RH or higher to grow. Get a dehumidifier that has auto-defrost capability and a fan. No auto-defrost and the dehumidifier won't get, and stay, below 50%.
I'm using a 40-quart model because it was the smallest one with auto-defrost and it is set on the galley counter with the drain going into the galley sink.
Initially I used to have it set at 35% RH but to save energy I've had it at 45% RH lately. It uses less energy than those round "dehumidifiers" that are really just heaters so it actually cuts the electric bill. I'm currently in my fourth season with this. It's nice to go down below after the boat has been shut up for a month and it smells fresh.