Part of my kitchen reno job was to take out a wall and re-route a heat
duct that had been in that wall. I was going to run it between the
floor joists in the basement and up through the floor underneath one
of my kitchen cabinets, and out the front similiar to a kick space
heater. It's actually a 36"X36" lazy susan. I don't have the cabinets
yet , but I wanted to at least rough in the ductwork before laying my
tile down. My question is are these cabinets pretty much hollow on the
bottom? Or are there supports at various locations?
No supports, just anti-gravity devices :)
The sides of each cabinet touchs the floor as does the vertical in the
back of the kick space. Possibly the back of the cabinet too. There
*could* be other pieces but they are not usual.
Could you use the bottom shelf of the cabinet as the top of a duct. Put a
louver in the kickplate. Mate to existing duct system somehow. So what if
it leaks a little it is supposed to go into the kitchen anyway.
You know, now that I did another search, thats what some people do,
they just simply run the duct through the floor, and the open cavity
at the bottom of the cabinet becomes the plenum, no other ductwork,
just install a grill at the kick plate.
My only concern doing this is that if you use the same ductwork for
heat/AC, will it cause damage to the cabinet from hot and cold air
blowing on it, especially in the summer. Condensation might form from
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