Push-to-connects always make me pause too—just feels odd not to crank down on a fitting, right? I’ve used them a few times in tight spots where sweating copper would’ve been a nightmare, but I still get that nagging “what if” about leaks behind the wall.
For checking leaks without ripping out drywall, here’s what’s worked for me:
1. Shut off all water-using appliances and fixtures.
2. Check your water meter—if it’s spinning or ticking, something’s leaking.
3. Mark the meter reading, wait an hour or two (no water use), then check again. Any change means you’ve got a slow leak somewhere.
If you want to get fancy, there are smart leak detectors now—stick one under the sink or near suspect walls, and they’ll ping your phone if they sense moisture. Not perfect for inside-the-wall stuff, but better than nothing.
About labeling mixed materials...I’m guilty of forgetting too. I started using painter’s tape and a Sharpie to mark where I transition from copper to PEX or whatever else, especially if I know I’ll be back later. It’s saved me some head-scratching more than once.
One thing I’m curious about: has anyone tried those thermal cameras you can rent from hardware stores? Supposedly you can spot cold spots from leaks behind drywall, but I haven’t tested it myself. Wondering if it’s worth the hassle or just another gadget collecting dust.
Also, does anyone else worry about long-term compatibility when mixing materials? I’ve read about corrosion issues with copper and galvanized, but not sure how much of that is old news versus real risk with modern fittings...