3 phase roof top unit be most efficient..
if you put on ground, you will need stretch ducks across 50+ ft....to supplement that, you may need 2 zones, meaning using two 4 ton outdoor condenser and 2 furnace/air handler.
if you put on ground, you will need stretch ducks across 50+ ft....to supplement that, you may need 2 zones, meaning using two 4 ton outdoor condenser and 2 furnace/air handler.
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