Can I use a small plug-in compressor? Why do 12″ pop-ups (1812) crack more often? CFM vs. PSI — what actually matters? Should I leave my sprinkler timer ON after winterizing? 45° vs. full-open: where should the ball valve sit? Is it too late to winterize? Why is Zone 2 running when I’m on Zone 3? Frozen backflow — what happens & what to do Plug-in electric vs. 80 CFM tow-behind Do I need every last drop out of the lines? Why do my sprays “mist” instead of stream? Air-dried seals & stuck diaphragms I closed the #1 shutoff and left it all winter Dripping days after a blowout The most-missed freeze pocket: shutoff → backflow Lake / pump systems — special winterizing notes Why do I keep replacing my outside irrigation shutoff?