What should your water heater be set at AB or C?

The Department of Energy recommends setting your heater to 120 degrees Fahrenheit. That should be plenty hot enough for most uses in your home. Now, some water heater temperature controls come with settings that read “A-B-C” as opposed to numbers.

How should a water heater be set up?





120 degrees Fahrenheit is the safety recommendation against scalding, but 140° is the common default setting. Most experts agree that anything below 120 degrees creates a risk for bacteria to develop inside your water heater from stagnant water, such as legionella that causes Legionnaire’s disease.

Which water heater thermostat should be set higher?

Quote from the video:
Quote from Youtube video: To setting it to the 120 degrees Fahrenheit. Most local plumbing codes say that water heaters should not be set higher than 120 degrees to avoid the risk of scalding.

What setting should my water tank be on?

Professionals recommend keeping your water heater set at a temperature between 130 and 140 degrees Fahrenheit. Any higher, or lower, could actually be dangerous for you and your family. While turning the temperature up higher can result in burns, turning it lower than the recommended setting can also be dangerous.

Should both thermostats on water heater be set the same?

If your water heater has two thermostats, adjust both the same amount. The top thermostat should be a few degrees higher than the bottom.

Why are there two thermostats on a hot water heater?





Most electric water heaters above 20 gallons have two thermostats that sense the temperature of the water in both the top and bottom of the tank. The upper thermostat is the boss and always tells the lower thermostat what to do.

What temperature should a gas boiler be set at?

As a rule, setting your heating control to 75 degrees should be sufficient to give you a perfectly warm house, while also allowing your boiler to run as economically as possible. Once this is set, you shouldn’t need to adjust it.

What temperature should I set my hot water on demand?

The EPA recommends 120 degrees because it’s hot enough to keep diseases at bay, it’s not hot enough to cause scalding, it will supply enough hot water for most small families and is relatively energy-efficient.

How can I make my water heater more efficient?

7 Ways to Make Your Hot Water Heater More Energy Efficient

  1. Turn Down Your Thermostat. …
  2. Invest in a Tankless Water Heater. …
  3. Make Sure You’re Using the Right-Sized Water Heater. …
  4. Keep an Eye on Your Tank’s Sediment. …
  5. Insulate Your Water Tank and Pipes. …
  6. Install in a Volt Timer. …
  7. Use Less Hot Water.



Does turning up water heater make hot water last longer?

Turning up the water heater temperature makes hot water last longer as the desired temperature is reached by using less hot water and more cold water. The recommended maximum temperature should be 120 °F. Hotter water poses risks to users and the water heater and increases energy bills.

What temperature should your house be?

The average room temperature is typically around 20°C, or 68 degrees Fahrenheit. This is a good ambient temperature to aim for, but it is important to bear in mind that different rooms will need to be heated to specific temperatures.

How do you set up a dual thermostat?



The general rule of thumb for a two-story home is that you should set each thermostat two degrees Fahrenheit apart from the other. During the summer, when your AC is running, set the upper floor at the temperature you actually want in your home. Then set each floor underneath that to two degrees warmer.

How do you balance upstairs and downstairs temperature?

Keep the air moving by turning on the fan setting of your home’s thermostat. Turn the fan from “auto” to “on”. The fan will circulate the air continually throughout the home and can help even out temperatures between floors.

Should upstairs thermostat be set higher than downstairs?

The downstairs thermostat should be set to your ideal temperature, and the upstairs thermostat should be about 2 degrees cooler. The heat should be balanced pretty well with this method, and your downstairs will get a little bit extra warmth to keep you comfortable.

Why do I have 2 thermostats?

Having two thermostats wired to the same HVAC unit allows you to evenly condition your home. With the use of zones, control, and dampers, you can regulate your home from top to bottom. However, installing two can be complicated. Multiple thermostats allow for more accuracy and efficiency.

Should I keep my thermostat at the same temperature?



The startup process for a furnace consumes more energy than simply running the entire time at one set temperature, costing you additional money. To maximize efficiency, it’s best to keep your furnace (or AC) at the same consistent temperature for long periods of time.

What is the best differential setting for thermostat?

To optimize both temperature- and humidity-comfort control, and to protect against excessive equipment cycling, the cooling differential should be between 0.8°F and 2°F; the heating differential should be between 0.5°F and 1°F. A heating differential below 0.5°F is too narrow and causes excessive cycles.