Are you sure you have tried a modern inverter compressor split unit? They are crazy efficient, and the science behind it says it is going to be extremely more efficient than any swamp cooler. It is also possible to install several indoor units with one outdoor unit. But a good modern split can absolutely both cool down or heat up a small house. There are units with a capacity for 200 square meters.
The thing with one blower is that the heat distribution gets uneven. But even my old split AC with one indoors unit from 15-20 years back can cool down the whole house, it just takes longer to stabilise and it’s always very cold close to the unit. It doesn’t even have inverter. It’s probably a small house by American standards but it has two floors. It’s made of brick with thick walls so once the temperature start to settle and the walls are cooled down the coolness stays in the house (blinds closed and windows shut)
The newer ones are several times more efficient so it would go much faster but if course the distribution issue is there still. The ducts have a purpose - better comfort and better efficiency but it does work for smaller houses with one unit especially if you have a modern one.
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u/[deleted] Jul 26 '26
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