Knowing how to adjust temperature on an electric water heater helps improve comfort, safety, and energy efficiency. Many homeowners never change the factory settings which can lead to water that is too hot or not hot enough.
This guide explains the correct electric water heater temperature setting, step by step. It also covers safety tips, recommended temperatures, and common mistakes to avoid.
Why the Electric Water Heater Temperature Setting Matters
The temperature setting affects more than comfort. It also impacts energy use and safety.
Water that is too hot can cause scalding. This is especially risky for children and older adults. High temperatures also force the heater to work harder, which increases wear.
Water that is too cool can promote bacteria growth and reduce cleaning effectiveness.
Finding the right balance is key.
What Is the Recommended Temperature for an Electric Water Heater?
Most manufacturers recommend setting electric water heaters to 120°F.
This temperature provides reliable hot water for daily use. It also reduces the risk of burns and lowers energy consumption.
Some households may prefer slightly warmer water. In that case, increase the temperature gradually and test it at a faucet before making further changes.
How to Adjust Electric Water Heater Temp Step by Step
Before starting, turn off the power at the breaker. Electric water heaters use high voltage, so safety comes first.
Here is how to proceed:
- Remove the access panels on the side of the tank.
- Pull back the insulation to expose the thermostat.
- Use a flathead screwdriver to adjust the dial slightly.
- If your unit has two thermostats, set both to the same temperature.
- Replace insulation and panels.
- Restore power at the breaker.
After adjusting, wait a few hours. Then test the water temperature at a sink.
This process allows you to adjust the electric water heater temp without damaging the unit.
Understanding Upper and Lower Thermostats
Most electric water heaters have two thermostats. One is near the top. The other is near the bottom.
Both thermostats control different heating elements. If they are not set evenly, you may experience inconsistent hot water.
Always adjust both thermostats to the same electric water heater temperature setting for best performance.
Common Mistakes to Avoid When Adjusting Temperature
Small errors can cause big problems.
Avoid turning the temperature too high at once since such sudden increases can strain the system and affect your electric water heater's lifespan. Never skip shutting off the power before opening panels.
Also, do not ignore unusual noises or slow heating after adjustments. These can signal deeper issues that need professional attention.
Energy Efficiency and Temperature Adjustments
Lowering the temperature can reduce energy use. Even a small change makes a difference over time.
If you are weighing efficiency options, it helps to understand the broader picture. Electric units have unique benefits and drawbacks. For a general overview, you can explore the pros and cons of electric water heaters to see how temperature control fits into overall performance.
When You Should Call a Professional
If adjustments do not improve water temperature, there may be a faulty thermostat or heating element.
Rust, leaks, or tripped breakers are also warning signs. In these cases, it is safer to stop adjusting and seek expert help.
Final Thoughts and Professional Support
Learning how to adjust temperature on an electric water heater is a useful skill. When done correctly, it improves comfort, safety, and efficiency.
If you need help with adjustments, repairs, or long-term maintenance, J. Blanton Plumbing offers professional water heater services. Their team can ensure your system is working safely and efficiently, so you can rely on consistent hot water without the guesswork.
J. Blanton Plumbing is a leading plumbing service provider in Chicago, specializing in water heater installation, plumbing repairs, drain cleaning, and whole-home plumbing solutions. With over 30 years of industry experience, our licensed technicians create expert resources to help homeowners understand their plumbing options and maintain long-lasting, dependable systems.
