99.999% of the time, Villas have the microwave exhaust venting recirculating back into the kitchen, where designer homes have the vent exhausting to the outside, either up and out of the roof or out an outside wall, if the unit is on an outside wall.
Changing it after the build to be vented outside would be costly....and different remedies dependent if you have a wood frame vinyl sided home, or stucco, and if the unit is on an outside wall or not.
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Florida licensed Home Inspector #HI688. (352) 250-7818
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