Is Boiling Water Enough to Clear a Drain?

When Boiling Water Might Help

While boiling water is a fast and efficient way to restore flow, knowing when it works is crucial. The most common scenarios where this drain cleaning technique is effective include mild soap scum buildup, solidified grease, and residue gunk that’s near the drain opening. If you notice such issues with your plumbing, hot water might break it up or move deeper into the system to restore proper flow.

This technique works on the basis that heat softens accumulated waste in the pipes and makes it easier for gravity to act on the buildup. However, this effect is usually temporary, prompting multiple flushes of hot water to achieve lasting results. If you have to regularly pour hot water down one or more drains, it may be time to call a trusted plumber.

When Boiling Water Doesn’t Work

Sometimes, it is essential to know when you need professional help. Household clogs are not always so simple, and pouring boiling water may be doing more harm than good. The most obvious scenario DIYers incorrectly use boiling water is when dealing with hair and soap scum in the bathroom, as well as cooled and hardened grease in the kitchen. Additionally, fibrous foods like potato peels or celery deeper in your plumbing may require more than boiling water to clear.

If you pour hot water and the problem persists, prolonged use can cause more damage than good. The last thing you want is a severe blockage or a costly repipe down the line. Although a DIY approach is commendable, it is essential to consult a professional plumbing service provider. Unlike DIY enthusiasts, plumbers use specialized tools to assess the extent of the blockage and recommend the best course of action.

About Your Pipes

A bigger risk of using boiling water is damage to your PVC pipes. Modern plumbing systems use this material, typically rated to handle temperatures of up to 140 degrees Fahrenheit. However, extremely hot water from the stove is usually 200-220 degrees Fahrenheit, which can warp joints in PVC pipes. 

Even if your home’s is not using PVC, prolonged drain cleaning with boiling water can lead to leaks, pipe damage, or costly repairs. Also, extremely hot water can stress the joints and connections in metal pipes, increasing the risk of damage. If you want your pipes to maintain structural integrity, use better alternatives to unclog drains. These include plunging, snaking, and regularly cleaning the P-trap, which restores flow without compromising your plumbing lines.

Call a Professional Drain Cleaning Service

As stated, taking a proactive approach toward drain cleaning is commendable. However, hiring a reputable plumbing service can make a big difference. At Mr. Rooter Plumbing, we believe in doing the job right the first time. Whether you are dealing with a slow drain, a stubborn blockage, or a whole-house repipe, we are here to help. Contact us for expert help and enjoy smooth drains for many years to come.