[Typ616]

Wondering if you guys found something that worked well... My upstairs (living room /kitchen) is sunny and pretty dry. Downstairs (bedrooms, laundry) the windows are mostly covered by the upstairs deck, so it's always 10-15F cooler and 20% more humid than upstairs (65% vs 44%) - run a clothes dryer or leave a bathroom door open post shower and we're at 70% despite new venting. Which I understand is too much? Feels humid anyway. That's in a drought, post major reno with new proper fan/exhaust venting done !!! must be underground water or just less light/sun, so I wanna fix this before rainy season.

I don't want to run a dehumidifier all the time (unless you suggest something that doesn't run a high electrical bill and work well), so I was thinking of (wires permitting) installing a Nest thermostat because unlike my current no-frills one, it can control the fan "alone" on a timer - independently of heat. I would be able to, say, suck upstairs dry air (that's where the intake is) and circulate it all over the house, maybe 15m per hour every hour, without having the actual heat on.

Of course I'll need to rewire the new furnace (no A/C) to make the nest work, I've only got 2 wires coming out of it right now - 5 ports are unconnected to anything, looks like an amateur wiring job. Before I splurge $250 on a smarter thermostat and rewire, punch holes, I'm wondering if you think that'll help enough or if you've got other suggestions to lower humidity downstairs... It's not a basement but might be a similar situation....