MIT Technology Review (paywalled) recently published "Your AC habits aren’t unique.
hack
In 2008 I bought a second refrigerator as a backup for my main refrigerator and to replace a chest freezer that consumed far too much electricity. The second refrigerator is in the basement and does not get regular use - it failed last year causing some frozen food to spoil before the problem was detected.
I installed a waterfall faucet as part of renovating the bathroom. A plumber recommended that I apply car wax to the spout to reduce limescale buildup. Unfortunately, the design of the faucet not only contributed to limescale but also made waxing difficult.