For many people, nothing feels quite as good as a hot shower in the morning. Although that might be a fantastic 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 too hot can waste energy and cost you money. It also can pose a safety challenge for members of your home. But, if you set your water heater temperature too low, it can enable growth of potentially harmful bacteria and not produce sufficient hot water for your dwelling.

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

What Temperature for my Water Heater Is the Most Energy Efficient?

Although many companies 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 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 bills. Energy waste is a particular challenge for water heaters because traditional tank models constantly heat a tank of water in case it is needed. If you have the water heater temperature set too high, your water heater is forever heating a tank brimming with extremely 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 hot enough to meet the requirements of most homes, but not so hot that it risks burning skin on contact. This makes it a safer option, especially in homes with young children or elderly individuals. 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.

Can I Raise My Water Temperature Higher Than 120 Degrees?

While many energy experts say 120 degrees is the preferred water heater temperature if you’re trying to save money, is it acceptable to set it higher? Apart from 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 helpful in eliminating harmful bacteria that can cause or exacerbate 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 significant amount 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 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?

While some people like their water extremely hot or prefer to blend hot and cold water to create their perfect water temperature, there is such a thing as water that is too hot. Energy officials 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 only seconds for the water to create third-degree burns. This is why a water heater temperature of 150 degrees is particularly hazardous in homes with children or the elderly.

Call LTS Plumbing & Heating Inc. for Your Water Heater Service Needs in Shamokin and Sunbury

Water heaters can sometimes feel a little mysterious, but the knowledgeable technicians at LTS Plumbing & Heating Inc. know these appliances extremely well. They’ve repaired many brands and models of water heaters through the years, so they have the experience to tackle your water heater repair in Shamokin and Sunbury.

We also provide water heater replacement, so call us at 570-648-0748 if you think you need water heater installation in Shamokin and Sunbury. We are happy to take a look at your system and produce a complimentary estimate!