I was wondering whether it is a good and safe idea to use the portable mini air coolers inside a yacht for an extended period of time. I keep the yacht's air condition system running 24/7 for a period of 5 months, from May until September even with the yacht empty and moored in the marina. Ambient temperatures range from 35 degc to 45 degc during this period and constant air conditioning is necessary to preserve the interior of the yacht. These portable air coolers are an evaporative air cooler designed to pull warm air from the room through its evaporative water filter to humidify while cooling. They contain a water tray which needs to be filled or topped up with water daily. I have seen them in operation outdoors and they are quite effective. I am worried that the large amount of daily evaporating water inside the yacht could cause damage to the yacht's interior. Ofcourse if these portable air coolers can be safely used inside the yacht while the yacht is stationary and empty of guests while moored in a marina, they will help preserve the yacht's onboard air-condition system and reduce the system's operating hours. I would appreciate hearing your thoughts on this subject. Below is an image of a portable mini air cooler.