Andy Hill wrote:
probably looking at 2kW in the closed room. Urk....I can see your
problem -- that room's gonna be both hot and stuffy.

I never anticipated that problem. This is in the *basement* -- it's
usually COLD down there!

Is this a raised floor, then (not sure how else you could have a
return on the floor in the basement)?

No, it's carpet on the concrete foundation. The return comes from a
plenum in the ceiling and runs down the wall to a vent on the wall
right at floor level. In extreme need I suppose I could punch
another hole in the wall near the ceiling to tap into that return
and draw hot air off the ceiling, but then the floor's likely to get
mighty cold. Maybe I just need a quiet fan to circulate air in the
room better....

Any other options for getting house air in and out of the room
(not necessarily outdoors), like maybe under the floor into an
adjacent room?

Not really. Sucking it through the exhaust duct would be ideal, except
dummy here used a 3" duct...