Amherst, NH homeowner Looks For Answers
The recommended temperature setting for a hot water heater is 120 degrees Fahrenheit. The most common setting on a hot water heater is 140 degrees, but this higher temperature can result in scalding if you are not careful, particularly in homes with young children. Any temperature setting below 120 degrees creates a risk of bacteria growing in the stagnant water in the tank. Too low temperatures can cause legionella to grow, which causes Legionnaire’s disease.
A new homeowner in Amherst was navigating the world of homeownership. Unsure what the proper temperature setting should be on his hot water heater, he contacted the team at Joyce Cooling & Heating Inc..
Deciding Between 120 and 140 Degrees for Your Hot Water
The safest temperature setting for a hot water heater is between 120- and 140-degrees Fahrenheit. Homes with elderly residents or young children, may prefer to stay at 120 degrees to prevent the risk of burns from water that is too hot. If there is only one person living in the home, you may also want to opt for the lower temperature as there are fewer demands for hot water. Homes with someone that is immune-compromised or multiple occupants with a higher demand for hot water, may want to opt for a 140-degree setting.
How Does Your Hot Water Heater’s Temperature Affect Energy Savings
A hot water heater typically accounts for 14-18% of a home’s energy use. Reducing the temperature for the hot water by 10 degrees can offer a 3-5% savings on average. Be sure not to drop the temperature below 120 degrees for safety concerns. You should be able to adjust the water temperature directly from a dial on most hot water heaters, making this change easy.
The homeowner in Amherst has settled on the higher temperature of 140 degrees for the hot water setting. He now has a better understanding of the proper setting to prevent bacteria, while also reducing the risk of scalding from water that is too hot.
