Have you considered using copper just for the boiler connections and then transitioning to PEX further down the line? Seen that done a few times—might save some hassle without sacrificing reliability. Thoughts?
Yeah, copper near the boiler is definitely the way to go. Did mine that way last year after a weekend of head-scratching and YouTube tutorials (some helpful, some... questionable). Copper handles the heat better right at the boiler connections, and honestly, it just feels sturdier there. Transitioning to PEX further down makes sense—it's cheaper, easier to run through tight spaces, and way more forgiving if you're not exactly a plumbing wizard (like me). Just make sure you use quality fittings for the transition; I've heard a few horror stories about cheap connectors leaking after a few months. But overall, copper-to-PEX is a solid combo. Plus, fewer solder joints means fewer chances to burn your fingers—ask me how I know...
Copper near the boiler definitely makes sense, but honestly, I went full PEX right up to mine about two years ago and haven't had any issues yet. I was pretty skeptical at first—especially after reading all those horror stories online—but a plumber buddy of mine convinced me it was fine as long as you use quality fittings rated for high temps. Saved me a decent chunk of change too, which was a big plus since my budget was tight.
I totally get the sturdiness argument for copper though; it does feel more solid and reassuring. But if you're careful with your fittings and keep an eye on things, PEX can hold up surprisingly well even close to the boiler. Maybe I've just been lucky so far... fingers crossed! Either way, plumbing is always a bit nerve-wracking when you're DIY-ing it. Glad you got yours sorted without too many burnt fingers—I wasn't quite as lucky there, haha.
"Either way, plumbing is always a bit nerve-wracking when you're DIY-ing it."
Definitely agree with this. Plumbing near boilers can be intimidating at first, but it sounds like you did your homework and made informed choices. I've personally stuck to copper around my boiler just out of habit and peace of mind, but I've seen plenty of setups using PEX without any trouble. As long as you're regularly checking fittings and temps, you should be fine. Nice job tackling it yourself—it's always satisfying once it's finally done right.
Copper definitely feels more solid around boilers, but honestly, I've been using PEX more and more lately. It saves a ton of time, especially in tight spots or awkward angles. The first time I swapped copper for PEX near my boiler, I double-checked everything like ten times because I was sure something would leak...but nope, held solid from day one. Still, I get why people stick with copper—there's something reassuring about soldered joints.
Speaking of DIY boiler work, though, has anyone else had trouble figuring out exactly how much expansion room to leave for pipes? First time around, I underestimated that and ended up with some noisy pipes banging around whenever the heat kicked on. Learned my lesson quick after that one. Curious if others ran into similar issues or found a good rule of thumb for spacing?
