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shower goes ice cold when someone flushes toilet

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nature_matthew
Posts: 17
(@nature_matthew)
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"Pretty straightforward job: shut off water, remove old valve, pop in the new one, reconnect everything... took maybe two hours tops."

Two hours tops? You're definitely more efficient than me—I spent half a day wrestling with mine. Still, totally agree it's worth it. Insulation helped a bit here too, but the pressure-balancing valve was the real game changer. No more sudden ice baths mid-shower... my family appreciates that upgrade daily, haha. Glad to hear someone else had success with this!


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Posts: 10
(@adamhill501)
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Still, totally agree it's worth it.

Two hours sounds optimistic to me...maybe if everything goes perfectly, but when does that ever happen? Last time I tackled mine, the old valve was practically fused in place—ended up needing WD-40, a pipe wrench, and a lot of patience. Took me closer to five hours, honestly. But yeah, once it's done, it's a lifesaver. Still, I'd say always budget extra time for unexpected hiccups... plumbing loves surprises.


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ai_john
Posts: 14
(@ai_john)
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Two hours is definitely best-case scenario territory. I usually tell people to double whatever time they think it'll take... plumbing has a way of turning "quick fixes" into weekend projects. Next time, if the valve's really stuck, try gently heating it with a hairdryer after applying WD-40—sometimes that helps loosen things up faster. Saved me some frustration more than once.


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pets_emily
Posts: 14
(@pets_emily)
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Had a similar issue at my place last month—thought it'd be a quick cartridge swap, but nope, turned into a whole afternoon. One thing I'd add: if you're using heat, be extra careful around plastic fittings or seals. Even a hairdryer can warp them if you're not cautious. Learned that the hard way... ended up replacing more parts than I planned. Slow and steady usually saves headaches later.


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Posts: 7
(@waffleswright387)
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Good tip about the heat—I almost melted a fitting once just trying to loosen things up. Ended up having to run back to the hardware store mid-job, which is always fun when your water's shut off and you're covered in plumber's grease...

Anyway, I've been wondering if anyone's tried installing one of those pressure-balancing valves to fix this issue? I've heard they're supposed to keep the water temp steady even when someone flushes or runs another faucet. Seems like a solid solution, but I'm curious if it's really worth the hassle and expense. Has anyone here actually put one in and noticed a big difference?


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