For lots of people, there’s nothing better than a hot shower to start the day. Although that may be a fantastic way to wake up and start the day, experts say you can set your water too hot.

Setting your water heater to a temperature that’s scorching can squander power and cost you money. It also can pose a safety challenge for members of your residence. But, if you set your water heater temperature too low, it can permit growth of potentially harmful bacteria and not provide enough hot water for your property.

So, what temperature is the right one for your water heater? In this article, we’ll determine the most cost-effective temperature to use, when there could be justification to set it a little higher and how hot is too hot for your home's water heater.

What Is the Most Efficient Temperature for a Water Heater?

Although many brands encourage setting the water temperature at 140 degrees, a more economical temperature for a water heater is 120 degrees Fahrenheit. Experts 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 up to 22 percent on energy bills. Energy waste is a particular challenge for water heaters because traditional tank models constantly heat a tank of water in case it is required. If you have the water heater temperature set too high, your water heater is forever heating a tank brimming with super-hot water.

What's the Right Temperature for My Hot Water?

More often than not, the suggested efficient temperature of 120 degrees is the right setting for your water heater. At 120 degrees, the water is heated enough to meet the requirements of most members of the household, but not so hot there's a danger of burning skin on contact. This makes it a safer choice, especially in homes with younger children or elderly men and women. Cooler temperatures also decrease mineral deposits in your water heater, which could cause it to break down or need replacement.

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

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

  • Bacteria: Increased water temperatures can be helpful in eliminating harmful bacteria that can cause or worsen certain health conditions. This also may be recommended if you know your home has an issue with bacteria, or if any members of the household are immunocompromised.
  • High usage: If your home is inclined to use a lot of hot water all at once—showering while also running the dishwasher and washing machine, for example—a greater 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 on its own, you may need to set your water heater to a higher temperature for it to work properly.

What Temperature Is Too Hot for my Hot Water Heater?

Although some people like their water exceptionally hot or would rather blend hot and cold water to achieve their ideal 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 a few seconds for the water to lead to third-degree burns. This is why a water heater temperature of 150 degrees is particularly dangerous in residences with children or the elderly.

Call Temperature Doctors Heating & Cooling for Your Water Heater Service Needs in Rockford

Water heaters can seem a little mysterious, but the skilled technicians at Temperature Doctors Heating & Cooling know these appliances extremely well. They’ve repaired many brands and styles of water heaters over the years, so they have the experience to handle your water heater repair in Rockford.

We also offer water heater replacement, so call us at (815) 914-6197 if you believe you need water heater installation in Rockford. We are happy to check out your system and give a free estimate!