Had a similar experience myself, but mine turned out to be a bit different. I went through the whole draining and bleeding routine too—twice, actually—but the pipes kept making these weird knocking sounds, especially late at night (of course). After a week of playing detective, I finally traced it down to some loose pipe hangers in the basement ceiling. Apparently, every time the water pressure changed, the pipes would shift just enough to bang against the joists. Tightened those up, added a little foam insulation around the trouble spots, and things quieted down nicely.
Still, like you said, when the weather swings from hot to cold quickly, I swear my pipes start whispering again. Guess older houses just have their quirks...or maybe they're just trying to keep us on our toes. Either way, as long as they're not waking me up at 3 AM anymore, I'm good.
Yeah, older houses definitely have their own personalities. I had something similar happen last winter—pipes knocking like someone was trapped inside the walls. Turned out it was just air pockets from a faulty valve. Replaced that, and things settled down...mostly. Still get the occasional creak or groan when temps swing fast, but hey, as long as they're not keeping me awake or costing me money, I can live with a little chatter now and then.
- Totally agree on older houses having their quirks—mine's like a moody teenager sometimes.
- Had a similar knocking issue last year; thought it was air pockets too, but turned out the pipes weren't properly secured to the joists. Added some pipe clamps, tightened things up, and it's been quiet since.
- Still get those random creaks when the weather shifts rapidly, but that's just the house reminding me who's boss...
Hadn't thought about pipes knocking due to loose clamps—interesting. Did you notice if the knocking got worse at certain times, like when the heating kicked in or after running hot water? I've had similar issues in older properties, and sometimes it's tricky pinpointing exactly what's causing the noise. Glad you got yours sorted though... houses definitely have their own personalities, don't they?
"houses definitely have their own personalities, don't they?"
They sure do... mine's a grumpy old man, I swear. Had a similar knocking issue last winter—turned out the pipes weren't secured properly in the crawl space. It always got louder when the heating kicked in, like clockwork. Tightened up those clamps and added some foam insulation around the pipes, and it's been quiet ever since. Funny how something so simple can drive you nuts until you figure it out.
