For lots of people, there's nothing like a hot shower to get the morning started. Even though that may just be a perfect way to wake up and start the day, experts say it’s possible to set your water too hot.

Setting your water heater to a temperature that’s too hot can throw away electricity and cost you money. It also can pose a safety challenge for members of your family. But, if you set your water heater temperature too low, it can permit growth of potentially harmful bacteria and not supply enough hot water for your household.

So, what number should you set your water heater? Below, we’ll determine the most effective temperature to use, when there could be cause to set it a little higher and how hot is too hot for your personal water heater.

What Is the Most Efficient Temperature for a Water Heater?

Although many brands advise setting the water temperature at 140 degrees, a more efficient temperature for a water heater is 120 degrees Fahrenheit. Specialists say 120 degrees hits the right balance between safety and energy consumption.

The U.S. Department of Energy reports that setting a home water heater temperature at 120 degrees could save approximately 22 percent on a home's utility bills. Energy waste is a particular challenge for water heaters because traditional tank models always heat a tank of water in case it is demanded. If you have the water heater temperature set too high, your water heater is constantly heating a tank full of very hot water.

What Temperature Should I Set My Hot Water To?

In many instances, the suggested efficient temperature of 120 degrees is the right setting for your water heater. At 120 degrees, the water is warm enough to meet the desires of most members of the household, but not so hot that it risks burning skin on contact. This makes it a safer alternative, especially in homes with small children or elderly people. Reduced temperatures also minimize mineral deposits in your water heater, which could cause it to break down or need to be replaced with a new one.

Should You Ever Set Your Water Temperature Hotter Than 120 Degrees?

While many industry experts say 120 degrees is the preferred water heater temperature if you’re trying to save money, is it acceptable to set it higher? Beyond personal preference, there are some situations where it could be wise to set your water temperature a little higher, between 130-140 degrees:

  • Bacteria: Increased water temperatures can be beneficial in eliminating harmful bacteria that can cause or worsen certain health conditions. This also may be recommended if you know your home has a problem with bacteria, or if any residents of the house have a compromised immune system.
  • High usage: If your home has a tendency to use a large volume of hot water at the same time—showering while also running the dishwasher and washing machine, for example—a higher water heater temperature may be necessary to make sure there’s adequate hot water for everyone.
  • Old dishwasher: If your dishwasher is getting up there in years and doesn’t heat water as part of its process, you may need to set your water heater to a higher temperature for it to work properly.

How Hot Is Too Hot for a Water Heater?

While some people like their water extremely hot or like to blend hot and cold water to create their perfect water temperature, there is such a thing as water that is too hot. Plumbing and heating specialists say any temperature hotter than 140 degrees is too hot for a water heater in a residence. At 150 degrees, which is considered way too hot, it takes only seconds for the water to create third-degree burns. This is why a water heater temperature of 150 degrees is especially dangerous in homes with children or the elderly.

Call Western Mechanical, Inc. for Your Water Heater Service Needs in Cache Valley

Water heaters can seem a little mysterious, but the skilled specialists at Western Mechanical, Inc. know these appliances extremely well. They’ve serviced many brands and designs of water heaters through the years, so they have the experience to handle your water heater repair in Cache Valley.

We also provide water heater replacement, so call us at 435-753-5515 if you believe you need water heater installation in Cache Valley. We are happy to take a look at your system and give a no-cost estimate!