2. It Causes Pipe Warping and Cracks
Unlike metal pipes, PVC is sensitive to extreme heat. If boiling water is poured down regularly, the high temperature can cause the pipes to warp, soften, or crack.
That means you could end up with leaks hidden behind walls, under cabinets, or beneath flooring—damage that often goes unnoticed until it becomes a much bigger problem.
“But Doesn’t Hot Water Help Prevent Grease Buildup?”
This is one of the biggest myths when it comes to kitchen sink maintenance.
Yes, hot water seems like it’s washing away cooking oil and food grease—but here’s the catch: it doesn’t break down grease. Instead, it melts it just long enough for it to move deeper into your plumbing, where it cools and solidifies again—further down, out of reach.
Over time, these greasy buildups can create serious blockages, resulting in slow drains, foul odors, and even pipe clogs that require professional help.
Safe Kitchen Habits That Protect Your Plumbing
Whether you’re an experienced cook or someone who enjoys the occasional microwave meal, adopting these simple habits can help keep your kitchen sink in good shape for years to come.
1. Always Wipe Grease Before Washing
Before rinsing your pots, pans, and plates, take a few moments to wipe off excess grease with a paper towel or napkin. Toss the used paper towel in the trash.
This one simple step goes a long way in reducing how much oil ends up in your pipes—and it doesn’t take more than a minute.
2. Use Drain Cleaners Regularly (But Safely)
Even with the best intentions, some grease and food particles will make their way into your pipes. That’s why it’s smart to use a gentle drain cleaner once a month.
Look for products that are safe for PVC and designed to break down grease specifically. Many drain cleaners today also include antibacterial ingredients, which help eliminate odors and keep your drain hygienic.
Tip for seniors: Choose low-odor, non-corrosive formulas that don’t require strong chemicals or heavy scrubbing—great for those with arthritis or sensitive skin.
A Note About Garbage Disposals
If your sink has a garbage disposal, you might be tempted to assume it can handle anything. But even disposals aren’t immune to damage from hot water and grease. Grease can coat the blades and inner surfaces, reducing performance and leading to future clogs.
So whether you use a disposal or not, the advice is the same: keep the grease out, and keep the boiling water in the pot.
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