The Two AC Settings That Can Swing Your Bill by Hundreds

Two AC settings, temperature and timing, can swing your cooling bill by hundreds of dollars a year. I spent weeks inside Department of Energy data (15-minute resolution, every component of the house) to figure out exactly how. In this video: why a colder set point costs more than you think (Newton's Law of Cooling, with real annual numbers for Oregon, California, Texas, and Florida), why your AC quietly gets more efficient as it cools down outside, and the strategy that uses both levers: keep it as high as you can tolerate during the day, then drop it low at night. Also covered: when running your AC in cold weather is actually risky, and why manufacturers don't publish the data that proves any of this. 🔧 Free heat-loss calculator: https://efficienado.com/home-energy-u... 🌐 Site: https://efficienado.com 📸 Instagram:   / efficienadodotcom   ☕ Support (no sponsors, ever): https://ko-fi.com/efficienado If this saved you a few bucks, a like or a subscribe is free. A donation is not free, but I'd appreciate it more. 0:00 I can't open my windows (and why that costs money) 3:55 The data: why you can trust these numbers 7:36 Why 72 costs more than 77 (Newton's Law of Cooling) 11:02 The cost in dollars: my house 12:07 California, Texas, Florida: the 10-year numbers 13:16 Why your AC runs more efficiently at night 19:45 Is it safe to run your AC when it's cold outside? 20:58 3 reasons to drop the AC at night: pre-cooling, peak rates, sleep Credits: "Repairing Evaporator Coil through Brazing" by Phyxter Home Services, licensed under CC BY 2.0. Source: https://www.flickr.com/photos/1934736... — License: https://creativecommons.org/licenses/...