Rotate the thermostat to … The goal is to adjust the temperature to approximately 120 F.Regulating the temperature on gas water heaters is more straightforward than on electric units, since it doesn't require any tools, and access to the thermostat is straightforward.The thermostats on the gas valves are usually set to its lowest temperature setting.To increase the temperature on water heaters with the White Rodgers valves, you should turn the dial counterclockwise while on Robertshaw and Honeywell valves is opposite, clockwise to increase, counterclockwise to decrease.Most of the temperature dials are marked with the " Warm" (120 F) and "Hot" (160 F) and have the "optimal temperature" (130 F) mark. Step 2 Gas valve water heaters are really easy to adjust. And most tankless water heaters feature a display with a temperature readout and controls for adjusting the temperature.Regardless of the water heater type, you should test the water before you make any adjustments. Switching from a 2.5 gallon per minute showerhead to a 1.5 gallon per minute showerhead could save a typical family of three about 10,000 gallons of hot water per year—$50 per year or more in energy costs alone depending on your fuel source*. These units are more expensive to purchase than electric storage water heating units. Then fill a cup with hot water and place your thermometer in the cup of hot water.The temperature dial will stop on the temperature of the water. This will ensure the water inside is heated less frequently, therefore helping you save money and energy. We delete comments that violate While the thermometer is calibrating, run the hot water from a faucet closest to the heater, until its hot to the touch (but don't burn yourself!). In this case, a household of three people would use about 1,800 gallons of hot water per month. One is near the middle of the unit, and the other is towards the bottom. For example, if you have a showerhead that emits 2 gpm and might run a kitchen faucet at 2 gpm at the same time, you’d need an on-demand water heater capable of delivering at least 4.0 gpm. You can even see the steam coming out the TPR valve, or hear boiling inside the tank.Follow these steps when changing the temperature of hot water on electric water heaters:Before you make any adjustments, measure the temperature of hot water at the tap. This fact sheet examines ways to reduce energy use and expenses related to domestic hot water heating including simple conservation measures and investments in new equipment.Common uses of hot water and typical amounts associated with each are shown in the table below from the U.S. Department of Energy (DOE):On average, homes in Colorado use about 20 gallons of hot water per person per day (600 gallons per person per month). As with other conservation measures at  this time, financial savings will likely be greater if the fuel saved is electricity or propane versus natural gas. Electric on-demand water heaters also require a significant amount of electricity to heat water so quickly. Do not try to regulate the temperature with the power ON. If it's set too low, not only will your hot water feel lukewarm, at best, it can also lead to bacterial growth which can cause things like Legionnaires' disease.

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