<p>We have AC in our home but rarely use it. Our house stays decently cool in the summer. A couple of times a year we get a lot of late afternoon sun and high temps that make our bedroom reach into the 80’s. On those nights I turn on the AC at bed. I like it at 74 and H likes it at 76. Our heater is set on a timer. It is turned off during the daytime hours. It goes on in the early AM and later afternoon. H has it set at 68. Take into account I live in Ca.</p>