For about a month after a big winter storm, Virginia temps were in the single digits—and it hit me that smart plumbing matters more than smart lighting when your pipes are on the line. This video starts with my newest “smart” upgrade: the Uncle Brown ST12U smart toilet. It’s not connected to Apple Home (and honestly, I’m not sure I want to give my Home residents that kind of power anyway), but it is packed with self-contained features like a motion-lift lid, a 97° heated seat, warm-water bidet, auto flush, nightlight, and a foam shield. After about three months, I’m extremely happy with it, with a couple tweaks like disabling the loud deodorizer fan. But the real “most important upgrade” is what the toilet install made me think about: leak detection and automatic water shutoff. I show the cheapest, easiest first step—placing leak sensors behind toilets, under sinks, by the dishwasher, washing machine, main valve, and water heater. Then I take it further with a retrofit shutoff using the Aqara Valve Controller T1 on my main water line (ball valve required) and build automations in Homey Pro. My setup is a dual system: Apple Home as the front-end for alerts, and Homey Pro on the back end for compatibility and automations—including immediate shutoff for critical leaks, and a “dead man switch” style prompt for non-critical ones.