How do I turn down the temperature on my water heater?

Asked By: Leonard Egolin | Last Updated: 20th June, 2020
Category: home and garden home appliances
4.1/5 (37 Views . 12 Votes)
Gas or electric water heaters
  1. Start by turning off power to the water heater at the circuit breaker.
  2. Find the access panel for the thermostat(s) and use a screwdriver to remove the panel.
  3. Peel back the insulation.
  4. Use a flathead screwdriver to adjust the thermostat up or down.

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Just so, does turning down the temperature on a water heater save money?

Turning down the temperature 10 degrees Fahrenheit on your hot water heater saves 3 to 5 percent on energy costs, so a drop from 140 F to 120 F saves you 6 to 10 percent. Annual energy costs for a hot water heater vary from $100 to $200, so this simple change could save you anywhere from $6 to $20 per year.

Similarly, what should my hot water tank thermostat be set at? You may be surprised to know that while the EPA (Environmental Protection Agency) recommends setting your water heater at 120 degrees. OSHA (Occupational Safety & Health Administration) recommends setting your water heater thermostat at 140 degrees under certain circumstances.

Then, how do I adjust my water pressure?

Position the jaws of the wrench over the top nut of the adjustment screw. Turn the screw in a clockwise direction to increase the water pressure and a counterclockwise direction to decrease water pressure. Make the adjustment one or two full revolutions at a time. Open a water faucet to test the pressure.

What temperature is B setting on water heater?

On my water heater I get 120°F water with a setting of 'B. ' When the temperature at the tap is 120°F the temperature in the tank will be about 130°F which is enough to prevent bacterial growth.

36 Related Question Answers Found

Does turning up water heater make hot water last longer?

Turning up the heat at the water heater causes hotter water to go to the hot tap. This makes the perceived hot water in your tank last longer. However, turning up the temperature will cost you more on your electric/gas bill, depending on which service heats your water.

How do I adjust the hot water temperature on my shower?

Adjust the Shower Valve
  1. Remove the handle. You may need a screwdriver to do this.
  2. Take off the metal cover beneath the handle, exposing the valve stem.
  3. Turn the RSL two notches in whichever direction desired, then put the RSL back in place.
  4. Replace the faucet handle, then test the mixture of hot and cold water.

How do I reduce my electric bill?

Here are 10 ways to Lower Your Electric Bill
  1. Use a programmable thermostat.
  2. Extra-insulate your home.
  3. Wear comfortable clothing.
  4. Replace your air filter.
  5. Lower the temperature on the water heater.
  6. Balance Electricity use by using appliances strategically.
  7. Save Electricity by Washing clothes in cold water.

How hot is too hot for tap water?

Even though manufacturers adopted voluntary standards to preset hot water heaters below the recommended safety standard of 120 degrees, water heater temperatures remain dangerously high in a large number of homes, the researchers said. They tested the temperature of hot tap water in more than 700 homes in Baltimore.

Do old water heaters use more gas?


It turned out that the water heater was 40 years old! Water heaters have gotten significantly more efficient in the last few years. Even a decade or so has made a big difference. Energy Star gas-powered water heaters are at least 8% more efficient than typical models.

Should I turn my water heater off at night?

No. The temperature of the water in a tank heater drops very slowly if it's not being used, so it will use little gas or electricity overnight. I have a gas tank heater. If it is an electric water heater, the answer is positively yes to turn it off at night because it is 100% efficient for heating.

Will a bad water heater element use more electricity?

It's even worse with the hot water heater due to any lack of noise to indicate it's running. If the elements are dirty or there is an excess buildup of sediment in the tank, the hot water heater will use a lot more energy to maintain the same tank temperature.

How can I make my hot water last longer?

Turn up the thermostat on the hot water heater. One of the easiest ways to make a hot shower last longer is by using less hot water while it's at a higher temperature. To do this, turn up the temperature on the thermostat that's attached to the hot water heater tank. (Not the thermostat on the wall.)

Should both thermostats on water heater be set the same?

If your water heater has two thermostats, adjust both the same amount. The top thermostat should be a few degrees higher than the bottom.

How much electricity does a water heater use?


A typical water heater will use around 4000 watts. Click calculate to find the energy consumption of a water heater using 4000 Watts for 3 hours a day @ $0.10 per kWh. The average use of hot water in a household is around 45 gallons per day, to lower the electricity usage you can lower your hot water use.

How do you increase the temperature on a hot water heater?

Method 2 Adjusting an Electric Water Heater
  1. Shut off the power to the water heater.
  2. Remove the access panel from the side of the unit.
  3. Pull out or push aside the insulation covering the thermostat.
  4. Use a flat-blade screwdriver to raise or lower the temperature setting.
  5. Replace the insulation and access panel.

What does ABC mean on a water heater?

Most hot water heaters have a A-B-C knob. Here is what temperature each letter stands for: Hot- 120 degrees. A- 130 degrees. B- 140 degrees.

Where's the thermostat on a hot water heater?

On most gas water heaters, the gas control valve, which includes both a thermostat and a heat limiting device, are located on the outside of the unit, near the bottom.

How does hot water heater thermostat work?


The thermostat is a thermistor that responds to heat by producing a small electric current. The current increases when water temperature increases, and drops when temperature drops. Changes in the electric current cause gas control to turn ON and OFF. When gas control turns ON, it releases gas to burner.

Does turning off your hot water heater save you money?

It can help you save money and energy in the long run when it's for a brief enough period to not cause damage to your plumbing. If you have a gas water heater, simply close off the gas valve attached to the unit. By turning off the water heater, you could save between three and five percent on your bill each month.