FYI - I brew in my basement with an Anvil 6.5 and tried a bunch of venting systems: hood, fans, windows open, bigger fans .... still dripped from the air ducts.
Bought a Brewhardware steam condenser (steam slayer) last year. Really impressed with the results. Still have limited mash flavors in the air, and some at the end of the boil during the cooling coil phase (made a counter flow chiller, but still at old school method).
BUT - that said, my significant other is much pleased with the results. There is a lingering after brewing for an hour or two as if baking or brewing on a kitchen stove, but no where like without it. Very happy with the outcome.
I have a dehumidifier 4' from the Anvil and it really only runs when I'm spraying water and cleaning up. Of course, YMMV.