This is intentional. Most of California’s coastal elite live near the ocean . Many homes there don’t even have AC and heating because they don’t need it.
I spent some time in coastal LA with a view of the ocean during parts of Dec and Jan. I stayed at an older home with a gas furnace and no AC. A few of the overnight lows reached the upper 40's with daytime highs barely reaching 60. Those were the days I had the furnace turned on all day. Most of the time I would turn the furnace on for a hour so when I woke up...