Posted August 9th, 2018, 03:49 PM
My understanding of AC systems is that if you have the thermostat set to 70 degrees, and the outside temperature is less than 70 degrees, the AC system will remain OFF.
No, the AC system will then work to bring the temperature up to 70. Then, aside from temperature control (which works in both directions), the ventilation effect (keeping internal air pressure slightly above that outside) will also be impacted.
But, do not trust us -read the instructions which most likely are on, or next to, your balcony door; or check with the shipboard guest services people when on board.
Six US Navy ships,
25+ cruises: Orient (1), Holland America (12), Norwegian (6), Carnival (1), Princess (1), Celebrity (3), Cunard (2), Royal Caribbean (1)