Fortunately, adjusting a hot water heater is simple, provided that you’re careful. Rotate the thermostat to your desired temperature. If your dial isn’t numbered, test the water temperature with a cooking thermometer or just use your fingers, then adjust it accordingly. Each mark to the left indicates a 10 degree increase in temperature. To limit the risk of injury, it’s best to just leave it alone in most cases.

wikiHow's The water temperature in your home has a very delicate balance—too high and you risk being scalded; too low and you’ll be stuck shivering under a lukewarm shower.
By using our site, you agree to our Include your email address to get a message when this question is answered.Consider dropping the temperature of your water heater during the spring and summer months when you tend to use less hot water.Non-domestic establishments like restaurants may be able to get by using a temperature setting as high as 140 °F (60 °C).If you have any doubts about your ability to adjust your water heater safely and correctly yourself, don’t hesitate to seek out a professional plumber for assistance.All tip submissions are carefully reviewed before being publishedIt only takes two seconds to receive third-degree burns from water heated to 140–150 °F (60–66 °C) Your water heater operates on a 30-amp double-pole breaker. She has several years of experience in the home-improvement industry, focusing on gardening, and a background in group exercise instruction. Lowering the temperature can save you money on your energy bill, but anything lower than 120 degrees could reduce your dishwasher’s performance.
Replace the Rheem water heater access covers and secure the covers with the screws you previously removed.Cecilia Harsch has been writing professionally since 2009. Harsch received her Certified Nurses Assistant license in 2004. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Use a flathead screwdriver to adjust the temperature dial.

She writes mainly home improvement, health and travel articles for various online publications. A Rheem water heater leaves the factory with the temperature preset at 120 degrees Fahrenheit, but you can adjust the temperature on the thermostat anywhere from 90 degrees Fahrenheit up to 150 degrees Fahrenheit.

When you’re finished, be sure to test your water temperature before hopping in the shower. Then, unscrew the access panel on the side of the unit and use a flat-blade screwdriver to raise or lower the temperature according to the ranges listed on the dial.

We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Upgrading a standard 5′ x 9′ bathroom to a master suite or an in-home spa may require upgrading to a larger gallon capacity unit, especially if the new bathroom will include a deep soaking tub with a multi-head shower system.

It's smart to stay within the range of 120 to 140 degrees Fahrenheit (49 to 60 degrees Celsius). Once you remove the covers, confirm that power to the unit is off using a noncontact circuit tester. Most manufacturers recommend 120 degrees Fahrenheit, but you can set the temperature a little lower to save money.

Each mark to the right indicates a 10 degree drop in temperature.

Pull the insulation from the cavity behind the covers to expose the thermostats.Insert a small flat-head screwdriver into the slot on the thermostat dial. Tank water heaters are typically located in the garage, basement or attic. How To Reset Flammable Vapor Sensor on Water Heater - YouTube For electric heaters, you’ll need to remove the access panel and insulation covering to access the temperature dial.

Small, point-of-use Rheem water heaters have one access cover, but larger whole home water heaters have two access covers.

Insert a small flat-head screwdriver into the slot on the thermostat dial.

Consider whether your water temperature is in need of adjusting. The temperature can be adjusted up or down by a control on the unit. If your hot water isn’t the right temperature, you can adjust it in a few minutes.

You will have two 30-amp double-pole breakers inside your panel if you have an electric dryer. Turn off both breakers if your breakers have not been labeled inside the panel.Remove the two screws holding the access cover to the side of your Rheem water heater. Use your best judgement for your family and household when setting the temperature.

She attended Tarrant County College and studied English composition. If you really can’t stand to see another ad again, then please We use cookies to make wikiHow great.

For gas heaters, all you need to do is twist the temperature dial at bottom of the heater. Just make sure you shut off the circuit breaker for the water first to avoid the risk of electrocuting yourself.