Ron, Our last sailboat had one of the air-cooled Adler-Barbour 12V kits installed. It worked OK but I can tell you that insulation is everything. We even had to add insulation to the bottom of the lid (it was top-loading) or the top of the lid would stay damp with condensation. Regards, Randy Pickelmann hard aground in Clearwater MORNING STAR lying in Anchorage Marina Baltimore, MD www.morningstar.talkspot.com