Turning up the temperature on your water heater involves locating the thermostat, adjusting it to your desired setting, and taking safety precautions to avoid scalding. The specific steps can vary slightly depending on your water heater type. If you are uncomfortable performing this task, or experience issues, consult a qualified plumber.
Here's a general guide based on common water heater setups:
Steps to Adjust Your Water Heater Temperature
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Locate the Access Panel(s): These are usually on the front or side of the water heater. You may need a screwdriver to remove the panel(s).
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Identify the Thermostat(s): Most electric water heaters have two thermostats (upper and lower). Gas water heaters typically have a single thermostat dial.
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Turn Off the Power (Electric Heaters): Crucially, for electric water heaters, switch off the breaker in your electrical panel that controls the water heater. This prevents electric shock.
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Remove Insulation and Plastic Cover (Electric Heaters): Carefully pull back the insulation and remove the plastic safety cover to expose the thermostat.
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Adjust the Temperature:
- Electric: Use a flathead screwdriver to adjust the thermostat dial(s). Increase the temperature a few degrees at a time. Important: Set both thermostats to the same temperature. A common recommendation is 120°F (49°C) to prevent scalding and conserve energy.
- Gas: Turn the thermostat dial to your desired temperature. Common settings range from "Low" to "Hot". Again, 120°F is a frequently recommended setting.
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Replace Components:
- Electric: Put the plastic safety cover back on, then replace the insulation.
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Restore Power (Electric Heaters): Turn the breaker back on.
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Replace the Access Panel(s): Secure the access panel(s) with the screws you removed earlier.
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Wait and Test: Allow several hours for the water to heat up. Test the hot water at a faucet, and adjust further if needed.
Safety Considerations
- Scalding: Setting the water heater too high can cause severe burns. 120°F is generally considered a safe and energy-efficient temperature. Consider installing anti-scald devices on faucets and showerheads, especially if you have young children or elderly individuals in your home.
- Legionella: While keeping the temperature too low can conserve energy, it can also create a breeding ground for Legionella bacteria. 120°F is a good balance between safety and energy efficiency.
- Professional Assistance: If you are uncomfortable working with electricity or gas, or if you are unsure about any part of the process, consult a qualified plumber.
Troubleshooting
If your water is not getting hot enough after adjusting the thermostat:
- Check the thermostat setting: Ensure it's set to your desired temperature.
- Check the heating elements (electric): If one element fails, the water may not heat properly. You may need to replace the heating element.
- Check the gas valve and pilot light (gas): Ensure the gas valve is open and the pilot light is lit.
- Insulation: Make sure your water heater is properly insulated.
