For quite a few people, there's nothing like a hot shower to get the morning started. Although that might be a perfect way to wake up and start the day, experts say you should be careful not to set your water too hot.

Setting your water heater to a temperature that’s above the recommended degree can throw away electricity and cost you money. It also can pose a safety challenge for members of your household. 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 dwelling.

So, what temp is the right one for your water heater? In this article, we’ll identify the most efficient 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 Temperature for my Water Heater Is the Most Energy Efficient?

Although many companies suggest setting the water temperature at 140 degrees, a more efficient temperature for a water heater is 120 degrees Fahrenheit. Experts say 120 degrees strikes the right balance between safety and energy use.

The U.S. Department of Energy states that setting a home water heater temperature at 120 degrees could save up to 22 percent on energy costs. Energy waste is a frequent challenge for water heaters because traditional tank models constantly 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 filled to the brim with very hot water.

What's the Right Temperature for My Hot Water?

In most cases, the suggested efficient temperature of 120 degrees is a good setting for your water heater. At 120 degrees, the water is heated enough to meet the desires of most members of the household, but not so hot that it could cause burning skin on contact. This makes it a safer choice, especially in homes with small children or elderly people. Lower temperatures also minimize 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 plumbing and heating experts say 120 degrees is the best water heater temperature if you’re looking to save money, is it OK to set it higher? In addition to personal preference, there are a couple of different situations 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 aggravate certain health conditions. This also may be useful if you know your home has an issue with bacteria, or if any members of the household are sick.
  • High usage: If your home has a tendency to use a large volume of hot water simultaneously—showering while also running the dishwasher and washing machine, for example—a greater water heater temperature may be necessary to make sure there’s sufficient hot water to go around.
  • Old dishwasher: If your dishwasher is old and doesn’t heat water on its own, you may have to set your water heater to a higher temperature for it to work effectively.

How Hot Is Too Hot for a Water Heater?

Although some people like their water quite hot or prefer to blend hot and cold water to create their ideal water temperature, there is such a thing as water that is too hot. Plumbing and heating specialists say any temperature above 140 degrees is too hot for a water heater in a residential dwelling. At 150 degrees, which is considered way too hot, it takes just seconds for the water to cause third-degree burns. This is why a water heater temperature of 150 degrees is especially unsafe in households with children or the elderly.

Call Interstate Heating & Air Conditioning for Your Water Heater Service Needs in Omaha

Water heaters can be a little mysterious, but the qualified technicians at Interstate Heating & Air Conditioning know these appliances like the back of their hands. They’ve serviced many brands and styles of water heaters throughout the years, so they have the experience to handle your water heater repair in Omaha.

We also offer water heater replacement, so contact us at 402-581-9641 if you think you need water heater installation in Omaha. We are happy to take a look at your system and give a free estimate!