In her bathroom, girlfriend may face several worries over time, and one of the typical issues is dropping temperature in the shower water. As a result, people often ask why does my shower walk cold once I turn an additional tap on! Well, there are several possible reasons, and also you need to be smart to take care of this.

You are watching: Why does my shower go cold when i turn another tap on

Water walk cold in the shower once you turn another tap since it is related to the supply chain the water. As your residence gets water supply from a central water system, once something rather is open, a new demand creates. So, the warm water goes come the newly opened tap, and also the shower water goes cold. However, it could be the water mixing valve within the shower.

For temperature dropping in the shower, girlfriend can’t readjust the totality system in the bathroom. However you can take some smart procedures to balance it. This short article will permit you know the details.


1 Why Does my Shower go Cold as soon as I Turn one more Tap top top – feasible Reasons

Why Does mine Shower walk Cold as soon as I Turn another Tap top top – possible Reasons

Mineral in the Tank

Most civilization use a furnace that comes v a tank for water storage. ~ a duration of regular intake of the heater, minerals can construct up in the tank, and that to reduce water capacity. So, the heat water supply ends quickly, and also the shower head goes cold.

Leakage in the Pipes

For old bathrooms, water leakage in the pipe deserve to be the possible reason for obtaining cold water in the shower. Since of the leakage, waiting traps inside the pipe and make the warmth water cold.

Damaged shower Valve

The water valve in the shower head could likewise get damaged after ~ a few years of intake though it is not really common. Yet if you have checked everything and didn’t discover anything wrong, maybe the valve is leaking behind the wall, and it is unable to mix cold and hot water to supply in the shower head head.

Why does shower head water temperature keeps changing

As mentioned previously, periodically water walk cold in the shower also if you don’t turn an additional tap on. In such cases, the valve in the shower is the culprit. You need to determine what is continue inside. For instance, the shower may go cold when the valve is leaking behind the wall.

If the valve keeps leaking, the ratio of cold water and also hot water remains unstable. Occasionally you will certainly feel like the temperature the the water is as well high and also sometimes too cold. So, the only solution is to reseal the valve v sealant or instead of the ahead one.

What reasons water pressure to fluctuate?

The most common reason because that water press fluctuation in the bathroom is a faulty plumbing system. If any type of of the fitting in the shower head is no okay, the may impact the water pressure. Because that example, when the avoid valve is no working, or over there is leakage in the pipes, water pressure drops.


The tube in the house are claimed to supply only water. But for any kind of reason, if waiting traps inside the pipe, water press fluctuates. To get rid of the issue, you require to discover out if there is any kind of leakage in the main water supply. Fix the leakage, and it will work fine again.

However, it might sound silly, but if your neighbor is spend too lot while you are using water too, it will drop the water pressure. Simply speak the end to your neighbor about the issue and also solve it. Or, you can additionally ask her water supply company to provide you a solution.

How to examine water temperature?

If you are wondering just how to check water temperature in the shower, it is basic to do. Just run the water for at the very least three minute from the shower so that the pipeline can drainpipe out cold water. Currently keep the water running and hold a cup under the showerhead and fill the cup with water.


Make sure the cup is filled sufficient where you have the right to put an instant-read thermometer. Now ar the thermometer within the cup and also read the temperature. That is that simple!

How lengthy does shower head water remain hot?

It counts on the rate of water flow through the shower and also the size of the water tank. Because as much as the tank offers water, the shower have the right to mix the cold and also hot water. Also, depending on the technique of warming water, it can vary.


For instance, let’s think about the tank has 50 gallons of capacity, and you space using an electrical water heating system in the bathroom. An mean shower have the right to spend 2 gallons of water through the showerhead. When water come in the valve, the mixes hot and cold water to carry out warm water. So, you deserve to expect to have actually warm water circulation from the shower because that at the very least 15 minutes.

Remember that it always varies based upon the setup in the shower.

How to store water at a consistent temperature?

Though shower head water is supposed to be at a continuous temperature, that won’t take place to everything. Particularly when you revolve on the 2nd tap. Because that instance, you space taking a shower and at the same time flush the toilet, the water will go cold. To store the temperature consistent, the best thing to carry out is; don’t revolve on other taps.

If warm water transforms cold in the shower all the time, friend must have actually to check the mix valve within the shower. If the valve is faulty or the seal inside is broken, warm water temperature fluctuates in shower. Primarily, you could adjust the sealing and apply plumber putty as new sealing. If that is damaged badly, replace the shower valve.

Some commonly Asked Questions

Why does my shower walk cold once I flush the toilet?

When someone flushes the toilet, and the shower is likewise open, water may go cold. The happens because of water demand. As 2 water lines demand water in ~ the very same time, the shower reduces the it is provided of water, and also warm water walk in the restroom tank. To it is in hassle-free us recommend using much less water in the do the washing up while acquisition a shower.

Why does my shower all of sudden go cold?

If you discover the shower all of sudden goes cold, the possible reason is a faulty water heater or a damaged shower valve. Because that both cases, you need to inspect them manually and also fix them. If the water heater is new, and there is nothing to deal with, the valve in the shower may have actually some issues. Either it is leaking, or the valve is damaged.

Why is my water gaining cold so fast?

Water in the bathroom can go cold fast if the water heater is not working properly. Particularly, if sediment is accumulated in the heater, which reduces the an are for water. Together a result, the can’t supply warmth water because that longer. We suggest maintaining the water heater regularly, keeping it clean and also secure to acquire a smooth it is provided of warmth water.

See more: Gardener'S Supply Company, 472 Marshall Avenue, Williston, 05495, Vt, Us

Final Words

Hope girlfriend won’t have to search again why does my shower go cold once I turn an additional tap on, all details are described here. Largely you can fix it yourself if shower head temperature fluctuates. However when the situation is too facility to take care of yourself, consult through a plumber. The will overview you on what to do and also how to deal with it.