For quite a few people, there's nothing like a hot shower in the morning. Although that might be a fantastic way to wake up and start the day, experts say it’s possible 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 cause a safety concern 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 household.

So, what number is the right one for your water heater? Here, we’ll establish 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 personal 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 economical temperature for a water heater is 120 degrees Fahrenheit. Specialists say 120 degrees strikes 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 roughly 22 percent on energy costs. Energy waste is a frequent challenge for water heaters because traditional tank models always 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 brimming with super-hot water.

So What Temperature Should My Hot Water Be?

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 option, especially in homes with younger children or elderly people. Cooler temperatures also decrease mineral deposits in your water heater, which could cause it to break down or need to be replaced with a new one.

Can I Set My Water Temperature Higher Than 120 Degrees?

While many plumbing and heating experts say 120 degrees is the best water heater temperature if you’re wanting to save money, is it OK to set it higher? In addition to personal preference, there are a few situations where it could be wise to set your water temperature a little higher, between 130-140 degrees:

  • Bacteria: Increased water temperatures can be a good way to eliminate harmful bacteria that can cause or worsen certain health conditions. This also may be useful if you know your home has a problem with bacteria, or if any people who live in your home are sick.
  • High usage: If your home tends to use a large volume 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 enough 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.

What Temperature Is Too Hot for my Hot Water Heater?

Even though some people like their water very hot or prefer to blend hot and cold water to achieve their desired water temperature, there is such a thing as water that is too hot. Plumbing and heating specialists 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 cause third-degree burns. This is why a water heater temperature of 150 degrees is particularly hazardous in residences with children or the elderly.

Call 1st Choice Heating & Air Conditioning for Your Water Heater Service Needs in Mission Viejo

Water heaters can seem a little mysterious, but the knowledgeable pros at 1st Choice Heating & Air Conditioning know these appliances like the back of their hands. They’ve serviced many brands and designs of water heaters over the years, so they have the experience to tackle your water heater repair in Mission Viejo.

We also offer water heater replacement, so reach out to us at 949-762-8644 if you think you need water heater installation in Mission Viejo. We are happy to check out your system and provide a free estimate!