MSZ-FE12NA installed.live in Nova Scotia,Canada. I am wondering what to do as seasons change.Do I leave the unit on all year long(except for filter cleaning) and switch between heating and cooling as required? Do I switch unit on and off for periods and use when needed? I suppose by turning off at times it will cause humidity to fluctate some what. What is the best thing for the unit itself and also for the house

Thank you for your time

Layne in Nova Scotia