I have friends that have both and tell me it's about the same.Would a swamp cooler work in Corona, CA as well as they do in Havasu? Wouldn't it be cheaper to run one of those then a home AC unit?
It'll work fine as long as the humidity stays down...When the monsoons come in late summer the humidity in havazoo gets in the 90s.
We have the same weather patterns for the most part, but are more influenced by the ocean breezes.
All in all though I'd stick with AC unless it was for a rental or your garage.
We have 2 A/C units, one for upstairs and one for downstairs. I was thinking of putting the swamp coolers in the garage to help cool the garage and downstairs. Just a thought!
Never been a fan of the swamp cooler contraption... IMO AC is better all the way around, and usually last a lot longer than the SCs