John Baethke & Son Plumbing
John Baethke & Son Plumbing
3511 N Cicero Ave
ChicagoIL 60641
 (773) 276-5430

Why Does Flushing the Toilet Affect the Shower Temperature?

Why Does Flushing the Toilet Affect the Shower Temperature?

You’re probably familiar with movie scenes where characters get hit with cold or hot water in the shower when someone else flushes a toilet. You might have even experienced this yourself. Did you ever wonder what the connection is between flushing toilets and having a sudden drop in shower temperature? Learn more about why this occurs:

Is It Normal?

While this experience seems like a common one that many people joke about, that doesn’t mean that it’s supposed to happen. In fact, having the water in the shower get colder when someone flushes a toilet isn’t considered a normal occurrence. There’s also a way to stop it from happening. 

Why Does It Happen?

When you have plumbing pipes that aren’t installed correctly or when you have older pipes and plumbing parts that are experiencing wear and tear, this problem is likely to happen. Older parts, such as shower valves, make it tough to balance the pressure in the shower. This results in fluctuations between hotter and colder water while you’re taking a shower, especially when someone is flushing the toilet. Keep in mind that it’s not just cold water you have to worry about. The water temperature in your shower can also get hotter without warning when someone is using water somewhere else in your home or when they flush (if you have a trunk and branch system). These changes in water temperature are due to problems with a pressure imbalance in the supply line. 

Older parts, such as shower valves, make it tough to balance the pressure in the shower. This results in fluctuations between hotter and colder water while you’re taking a shower, especially when someone is flushing the toilet.

How Do I Stop it From Happening?

If you’re tired of having to deal with unpleasant temperature changes in the shower, whether it’s water getting colder or hotter, there are ways to prevent it from occurring. A simple way to do so is by having a brand new mixing valve installed for your shower. This alone might be enough to stop temperature fluctuations from happening, even when someone flushes a toilet while you are taking a shower. These valves help balance how much hot water and cold water is present, which prevents your shower from becoming too warm or cold. If this doesn’t work, you might also consider investing in a low-flow toilet. This means that your toilet doesn’t use as much water, which results in a lower chance of having pressure problems in the shower when it’s being flushed. Professional plumbers can also help you come up with other ways to stop water temperature changes from happening in your home. 

If you have problems with your toilet or shower, get in touch with the professional plumbers at John Baethke & Son Plumbing. We provide repair and installation services in the Chicago area.

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