Yeah, I’ve run into the same thing with dedicated lines—especially in places like basement bars or laundry sinks that barely get used. Had one spot where the trap dried out so much, the owner thought there was a dead animal in the wall. A quick splash of water fixed it, but it’s definitely something to keep an eye on. Those trap seal primers are handy, but honestly, I just tell folks to dump a pitcher of water down every month or so. Not perfect, but it works unless you’re super forgetful. Still beats dealing with a backup or leak under the sink...
Honestly, I’ve seen that dried-out trap issue way more often than I’d like, especially in those tucked-away spots nobody remembers. You’re right—just pouring a bit of water down is usually all it takes, but people forget unless there’s a stink to remind them. Trap primers are nice in theory, but in practice? They don’t always get installed or maintained properly.
When it comes to dishwashers, though, I lean toward hooking up under the sink instead of running a dedicated drain line unless there’s a really good reason not to. Less pipe means fewer places for traps to sit unused and dry out. Plus, it’s easier to spot leaks or clogs if everything’s together under one cabinet. But then you get folks who worry about backups from the sink into the dishwasher, or vice versa, if something gets clogged. Air gaps help with that, but they’re not foolproof.
Curious if anyone’s run into issues with under-sink setups causing more frequent backups, or is that just overblown? I’ve only seen it happen when someone shoves a ton of food scraps down the disposal and forgets to run enough water. Otherwise, seems like most problems crop up in those rarely used lines where stuff just sits and dries out...
Is there a scenario where a dedicated line actually makes more sense for a dishwasher? Maybe in bigger kitchens or commercial setups? Just thinking through the trade-offs.
I’ve wondered about this too, especially since I just moved into a place where the dishwasher drains under the sink. Haven’t had any backups yet, but I do get a little paranoid about food bits clogging things up. I guess if you had a huge kitchen or ran the dishwasher constantly, a dedicated line might help? But for most homes, it seems like keeping everything together is just easier to keep an eye on. Has anyone actually had a backup go from the sink into the dishwasher? That sounds like a nightmare...
Never had a backup from the sink into the dishwasher, but I get nervous about it too. I always make sure the air gap is clear and run the disposal before starting a load. Still, I wonder if those high loop setups are really enough to prevent backflow, or if a dedicated line is just safer in the long run? Anyone ever had issues even with all the “right” precautions?
I get the same anxiety every time I run the dishwasher, honestly. I’ve read that high loops are supposed to be enough, but I still wonder if it’s just a “good enough” solution rather than the best one. Has anyone actually seen gunk come back up even with an air gap and high loop? I’m all about avoiding unnecessary waste and repairs, but sometimes I think a dedicated line might be worth the peace of mind... or am I just being overly cautious?