Short excerpt from a Derek Cole YouTube video ("Should I turn my thermostat off") giving household/DIY advice: the speaker recommends keeping the thermostat fan setting on "auto" so the HVAC runs intermittently to circulate air through the filter, to set heat/cool setpoints to desired temperatures, and to allow the system to dehumidify during wet conditions instead of turning it off.
Because it is kind of this middle part where it's kind of a warmer afternoons, cooler mornings, not really needing heating or air. But what I do at my house is I keep it on auto. And the temperatures for heat and cooling, I want. That way it comes on and still runs the air and circulates every now and then. Now you don't have to do that, but I recommend doing that because you want that air change, you want that air to go through the filter, get some new air back out so you don't keep breathing in the same stuff. So I would leave it on auto. Just put your set points where you want them to and not worry about it. Because with all the rain and moisture we have had you do, it does need to dehumidify sometimes.
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