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Hot water ion the toilet?

Some home builders unknowingly make the mistake of connecting hot water to a toilets, without realizing just how damaging this can be!

The Thermal Image above clearly shows that hot water has been mistakenly connected to the toilet. Lucky this was a brand new home and the new owners had not taken possession yet. The builder was able to fix the problem before they moved in

In this blog post, we will discuss why hot water should never be used in a toilet . Understanding the consequences of using hot water and how it can cause damage. It will also increase your home energy costs. Read on to discover why it is essential to understand these key differences when dealing with plumbing.

The Problem

It may come as a surprise to many, but hot water should never be used in toilets. Hot water can cause damage to the seals, and other components – leading to costly repairs. Furthermore, it goes without saying that dealing with such a problem would be far from pleasant.

How Hot Water Affects Toilet Performance

Working a toilet is a relatively simple but critical process. Hot water, however can have detrimental effects when used in the flushing . It’s important to understand why this is so.

The heat of the hot water affects the wax seal which is a key component in allowing water to pass inside and out through flushing. Over time, this heated wax seal can degrade leaving an opportunity for leaks over time. Thus, your best bet is to stick with nice cool water for your toilet.

Potential Damage To Your Toilet

Hot water is commonly known for being effective in removing dirt and grime, making it an appealing option to use in the toilet. Unfortunately over time, using hot water can cause considerable damage. Allowing hot water to enter and sit within the bowl of your toilet can lead to mineral deposits building up along the porcelain interior and rim of your toilet. This ultimately leading to corrosion of these parts due to the acidity contained within the mineral deposits. Furthermore, repeated exposure may also cause the components within your tank or bowl such as flappers and flush valves to be gradually compromised over time.

Long-Term Maintenance Costs

When it comes to understanding the long-term impacts of using hot water in toilets, maintenance costs should be at the top of your list. Not only can putting hot water in a toilet corrode components and cause parts to wear down faster. But it also introduces higher risks for problems like splitting or cracking.

Its a safe assumption that not using hot water will save money on energy bills. It’s best not to risk the extra expense of parts replacement and repairs that can quickly add up. Make sure you’re taking into account both the short and long-term implications when considering how to care for your toilet properly.


Overall, understanding why we should not use hot water in the toilet is key to preventing costly complications down the road. Hot water causes calcium deposits, which can damage and clog your plumbing system over time. The heat of the hot water affects the wax seal which is a key component in allowing water to pass inside and out through flushing.

Using cold water instead of hot extends the life of your toilet and reduces the probability of costlier maintenance issues in the future. With just a few simple steps you can protect both your wallet and your home from prolonged damage caused by improper flushing.

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