What Are the Causes of Varying Temperatures of Shower Water?

Nothing can be more frustrating than trying to enjoy a relaxing shower and suddenly being blasted with icy cold water---or, to hear the flushing of a toilet and feel the water burn your skin.

An Empty Water Heater

Shower water temperature fluctuations can be very frustrating.Shower water temperature fluctuations can be very frustrating.
Luckily, only three things can cause changes in shower water temperature and all are pretty easy to fix.

If the teenager of the household has been showering for the past hour, there's a pretty good chance the next person in the shower will start off with some hot water, only to end up making a shivering exit. As soon as all the hot water in the water heater has been depleted, it begins filling again with cold water, causing the water to turn from hot to ice cold. Wait a few hours for the water heater to replenish before attempting to enjoy a hot shower.

Cold Water Pressure Changes

Sudden changes in the shower water temperature are caused by pressure fluctuations. This happens when water gets used from the same water system. When cold water is used---for example, a toilet is flushed---the water pressure in the cold water pipes will dip. This will cause less cold water flowing to the shower valve, changing the lukewarm mix to hot water only.

Hot Water Pressure Changes

Pressure changes in the hot water pipes will have exactly the opposite effect. As soon as someone uses hot water somewhere in the same water system, the hot water pressure will drop, preventing hot water from reaching the shower valve and blasting you with ice cold water. To fix the pressure changes in your pipes, either change the pipes (installing a different size pipe may decrease pressure fluctuations) or install pressure valves to control the hot and cold water balance of your shower.

About the Author

Virtually growing up in a computer repair shop, Naomi Bolton has held a passion for as long as she can remember. After earning a diploma through a four year course in graphic design from Cibap College, Bolton launched her own photography business. Her work has been featured on Blinklist, Gameramble and many others.