There's nothing better than a pre-heated bathroom on those cold winter mornings. The last truly useful application I've found is operating the lawn sprinklers. This is the story of my sprinklers. The Problem I have a unique lawn watering problem that makes manual operation of the sprinklers a real inconvenience. I'm on well water, and my well doesn't deliver much.
Recovery is quick, though, because the well is fed year-round by an underground stream.
If I shut the sprinklers off for 20 minutes, I can get in another 25 minutes of good sprinkling. Three 25-minute cycles in a zone puts down the desired amount of water, but there are two more zones. As you can see, that's a lot of turning on and off of sprinklers to do the entire lawn. Worse, I can't do anything else that requires large quantities of water while the lawn is being watered. Otherwise the pump will start sucking air before the 25-minute cycle is up, or, if I'm between cycles I'll slow the recovery of the well.