For quite a few people, there's nothing like a hot shower to start the day. Although that may just be a great 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 scorching can squander electricity 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 allow growth of potentially harmful bacteria and not produce sufficient hot water for your dwelling.

So, what number is ideal for your water heater? Here, we’ll identify the most effective temperature to use, when there could be justification 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 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 usage.

The U.S. Department of Energy estimates that setting a home water heater temperature at 120 degrees could save approximately 22 percent on energy bills. Energy waste is especially a 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 forever heating a tank full of super-hot water.

What's the Right Temperature for My Hot Water?

In most cases, 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 desires of most residents, but not so hot that it could cause burning skin on contact. This makes it a safer alternative, especially in homes with small children or elderly men and women. Cooler temperatures also cut down on mineral deposits in your water heater, which could cause it to break down or need replacement.

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 trying to save money, is it alright to set it higher? Beyond personal preference, there are a few circumstances where it could be wise 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 aggravate certain health conditions. This also may be practical if you know your home has trouble with bacteria, or if any members of the household have a compromised immune system.
  • 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 higher water heater temperature may be necessary to make sure there’s sufficient hot water for everyone.
  • Old dishwasher: If your dishwasher is old and doesn’t heat water itself, it may be necessary to set your water heater to a higher temperature for it to work properly.

How Hot Is Too Hot for a Water Heater?

Although some people like their water very hot or like to blend hot and cold water to obtain their desired 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 residence. At 150 degrees, which is considered way too hot, it takes only seconds for the water to lead to third-degree burns. This is why a water heater temperature of 150 degrees is especially hazardous in households with children or the elderly.

Call PS Cool Heat for Your Water Heater Service Needs in Highlands Ranch

Water heaters can be a little mysterious, but the skilled technicians at PS Cool Heat know these appliances inside and out. They’ve serviced many brands and models of water heaters throughout the years, so they have the experience to tackle your water heater repair in Highlands Ranch.

We also are skilled in water heater replacement, so reach out to us at 720-613-2210 if you believe you need water heater installation in Highlands Ranch. We are happy to check out your system and provide a free estimate!