[M_Six]

I spoke with the contractor who has done our HVAC systems and he thinks we might be able to duct some return air from the basement into the upstairs a/c system so the more humid air from the basement will pass through the dehumidifier in the a/c system. I'm not sure there's a pathway for that ducting, though. We'll have to do some investigating.

I may buy one of the Homelabs stand-alones in the meantime. A couple hundred bucks isn't bad even if it turns out to be a temporary thing.