For lots of people, there’s nothing better than a hot shower in the morning. While that may be a great 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 too hot can waste electricity and cost you money. It also can pose a safety issue 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 produce sufficient hot water for your dwelling.

So, what temperature is ideal for your water heater? In this article, we’ll identify 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 home's water heater.

What Is the Most Efficient Temperature for a Water Heater?

Although many companies advise setting the water temperature at 140 degrees, a more economical temperature for a water heater is 120 degrees Fahrenheit. Industry experts say 120 degrees strikes the right balance between safety and energy usage.

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 continuously heat a tank of water in case it is needed. If you have the water heater temperature set too high, your water heater is consistently heating a tank filled to the brim with very hot water.

So What Temperature Should My Hot Water Be?

More often than not, the suggested efficient temperature of 120 degrees is an effective yet cost-saving setting for your water heater. At 120 degrees, the water is heated enough to meet the desires of most residents, but not so hot there's a danger of burning skin on contact. This makes it a safer option, especially in homes with young children or elderly individuals. Lower temperatures also decrease mineral deposits in your water heater, which could cause it to break down or need replacing.

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

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

  • Bacteria: Higher water temperatures can be a good way to eliminate 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 people who live in your home have a compromised immune system.
  • High usage: If your home tends to use a significant amount of hot water simultaneously—showering while also running the dishwasher and washing machine, for example—a higher water heater temperature may be necessary to make sure there’s enough hot water to go around.
  • 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 correctly.

What Temperature Is Too Hot for my Hot Water Heater?

Although some people like their water extremely hot or prefer to blend hot and cold water to achieve their ideal water temperature, there is such a thing as water that is too hot. Experts say any temperature higher than 140 degrees is too hot for a water heater in a home. 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 considered very hazardous in homes with children or the elderly.

Call Fire & Ice HVAC for Your Water Heater Service Needs in Manassas

Water heaters can be a little mysterious, but the qualified specialists at Fire & Ice HVAC know these appliances inside and out. They’ve repaired many brands and models of water heaters through the years, so they have the experience to take care of your water heater repair in Manassas.

We also are skilled in water heater replacement, so call us at 703-595-4157 if you think you need water heater installation in Manassas. We are happy to examine your system and give a complimentary estimate!