Home AppliancesWater Heater

How To Adjust the Temperature of Your Water Heater

Hands Young Women Set The Temperature Of The Water In The Electric Boiler

Is there anything worse than a cold shower in the middle of winter? The cold shock can be enough to make you jump out, never wanting to step foot in there again!

Luckily, there is an easy way to adjust the temperature of your water heater. With just a few minutes and our helpful tips, you can set your water heater to the perfect temperature so that you never have to worry about taking a cold shower again!

  • Make sure to set your water heater temperature between 120 and 140 degrees.
  •  Shut off the power or gas before you adjust the temperature setting.
  •  If the temperature setting isn’t the problem, contact a professional for help.
  •  You can enjoy a hot shower whenever you want with the proper maintenance.

This article will show you how to adjust your water heater’s temperature and what temperature you should set. Read on to always have the perfect hot water!

What Temperature Should You Set Your Water Heater To?

Hand Rotate Temperature Adjuster Of Water Heater. High Temp

The main thing to consider is the size of your home. Consider setting the heater at a slightly higher temperature (between 130 and 140 degrees) if it is large. If your home’s not large and you don’t need to worry about hot water traveling a long way, then 120 degrees should be fine.

Secondly, consider how you’re using the hot water. If you have children taking baths, a lower temperature might be best for them (around 120 degrees). A slightly higher temperature (130 or 140 degrees) should be fine if you mainly use hot water for washing dishes and laundry.

Lastly, if you’re setting the water heater temperature lower than 120 degrees, there’s a risk of bacteria and microorganisms growing in it. So it’s always best to ensure the temperature stays above 120 degrees, no matter what.

Now that you understand what temperature to set your water heater to, let’s consider how to adjust it.

5 Easy Steps To Adjust the Temperature of Your Water Heater

The process is simple. Follow these steps to ensure you get it right the first time. Different models may have different types of temperature control systems, so make sure to familiarize yourself with the one you are working on.

Step 1: Turn Off the Power or Gas

Man Working At Pipes. Turning On Or Turning Off Water Supply In The Boiler Room. Plumbing Concept.

Before you open the access panel on your water heater, you must ensure the power is shut off. If you have a natural gas system, turn off the gas to the unit and wait for all the pilot lights to go out.

Step 2: Remove the Access Panel

Beautiful Young Businesswoman Setting The Temperature On Digital Thermostat

The access panel is usually on the side or bottom of your water heater. Unscrew and carefully remove the access panel. Once you have removed the access panel, you can see the temperature control knob inside the unit.

Step 3: Adjust the Temperature Setting

Repair Of A Gas Boiler

The temperature control knob is usually marked with a range of temperatures (e.g., 100 – 150 degrees). Turn the knob to your desired temperature, making sure not to exceed 140 degrees.

Note: Be careful when turning the knob, as it can be easily damaged.

Step 4: Put the Access Panel Back On

Hand Rotate Temperature Adjuster Of Water Heater (High Temp)

Once you have adjusted the temperature, put the access panel back on and screw it in securely.

Step 5: Turn On the Power or Gas

Electric Water Heater In The Bathroom. Hot Water Supply In The Apartment

Finally, turn the power or gas back on to your water heater. Give it a few minutes to heat up, and then test the hot water to ensure that you have adjusted the temperature correctly.

Congratulations! You have now successfully adjusted the temperature of your water heater. Now you can enjoy hot showers all year round without worrying about a cold shock!

All that’s left to do is enjoy the perfect temperature of your hot water.

  • Never adjust your water heater to a temperature higher than 140 degrees. It can be dangerous and cause serious burns.
  • Make sure that you keep the access panel securely closed at all times.
  • If you have any doubts about adjusting your water heater’s temperature, it is best to contact a professional.

What if Turning the Heat Level Up Doesn’t Solve the Issue?

If your water heater isn’t functioning properly, even after you adjust the temperature setting, it could be because of a few other reasons, including; sediment buildup in the tank, a pilot light out, or a power surge.

If the temperature setting isn’t the problem, make sure to get it checked out by a professional to avoid any major issues in the future. An experienced technician can diagnose the problem and provide a better solution.


Keep your showers toasty and warm all year round by adjusting the temperature setting on your water heater. Hope this article has provided some useful information on how to adjust the temperature of your water heater.

If you have any questions or need help, don’t hesitate to contact us.

Frequently Asked Questions

Does Increasing the Temperature Setting on My Water Heater Increase Bills?

Yes. Increasing the temperature setting on your water heater will increase your utility bills as it uses more energy to heat the water. It is best to keep the temperature setting moderate to avoid unnecessary costs.

What Is the Most Accurate Temperature for a Hot Water Heater?

The most accurate temperature for a water heater is 120 to 125 degrees. This is the temperature recommended by the Department of Energy to reduce energy use and prevent scalding.

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