Originally Posted by Aquabelle
Does anyone have a basis for noise comparisons between Mermaid, Cruiseair and Marineairre 16kBTU units? Maybe someone has one brand in one cabin, another elsewhere aboard and could comment...or un-installed one/re-installed another? I am after a QUIET unit.
I don't have a comparison of compressor noises, but they all seem pretty close to me. The quietness level will be determined by location, how well the unit is set on dampers, and how the duct work is located. If the return air is returned right to the unit, it is an almost guarantee that it will be noisy. Breaking the supply ducts into different outlets will reduce the air flow per register, and make it much quieter. Also having the supply outlets away from the unit will make it quieter.
I once had a sedan 2 state room trawler. I put an air handler under the center of the V berth. It was around the corner from the blower so fairly quiet. The cabin doors had louvers and so did the locker doors. I used the hanging locker as a free air return to the unit in the side stateroom. No supply duct in there. It was our sleeping cabin. It had good air circulation, and was very quiet. That may not work in all situations.