Split unit AC vs Package unit AC Pros and Cons

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I have never seen a package unit in a residential home.

I’d imagine just ducting to and from a package unit would be very difficult and inefficient. Running a line set through brickwork is nothing. Running a 12” or larger duct would just be tough, much less two of them (supply/return). You’d have to enter the wall through the attic space, or lose a lot of interior space to route the duct through the wall.

The heat loss/gain of the duct work, plus balancing the system with a long header run vs a centrally located blower with independent branches.

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this ^^^^^^^

why do you want to ghetto rig the most critical feature to your homes livability

package units are used for trailers because they dont have room for traditional installations

the only way a package unit makes sense is if its a single story house on pillars and the ductwork is run under the house with floor vents

Most homes with crawl spaces have package units. The vast majority up here in NC have package for downstairs and split for upstairs

I had a package unit in a single story rental home with a crawl space. I did live in it for a couple of years.

Package unit is quieter
No chance of condensation overflowing and
causing a problem
No gas combustion in the home so no chance
of carbon monoxide
Easy/quick to install and easy access to
repair
Less likely to leak freon since it's a
sealed unit from the factory.

The Trane package unit at my rental house unit lasted 22 years. I replaced it with the same. All the other homes I lived in had split units. I preferred the package unit.

Look into Ductless Mini Splits also.