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There are several ways to turn down the thermostat on a water heater. Unfortunately, many models have different ways of doing this. On top the side of the water heater should be a knob that can be turned to the desired temperature. If you don't see this device, check your owner's manual for more specific directions.

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Midway down the side of the tank there is a device called an aquastat. It has numbers progressively increasing from left to right. These are the settings that the aquastat's contacts will open when the water temperature is reached shutting the tank off. It is like a thermostat but the sensing element is inside the tank and is surrounded by water. Generally all operate on the same principal, turn the set-point knob clockwise increases the temperature setting and turning the set-point knob counter clockwise decreased the temperature setting.

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10y ago
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6mo ago

Typically, you can turn down the thermostat on your hot water heater by locating the temperature dial on the unit and adjusting it to a lower temperature setting. It's important to follow the manufacturer's instructions and safety precautions when making any adjustments to your hot water heater. If you're unsure or uncomfortable doing it yourself, consider contacting a professional for assistance.

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Q: How do you turn down the thermostat on your hot water heater?
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How can you turn hot water temperature down with no thermostat?

There has to be a way to turn down the temperature somewhere on your water heater. There is either a dial on a manual control or up and down arrows on an eletronic one.


How do you set the aquarium heater without boiling them?

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There is a thermostat somewhere, usually on the wall or on the heater itself. Just turn the breaker off at the breaker box. Label the breaker if it is not already labeled. Once the power is turned off to the unit, you can disconnect the wires inside the heater to permanantly shut down the unit.


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