What should I set my AC to overnight?

Author: Gage Lynch  |  Last update: Friday, January 9, 2026

According to the Cleveland Clinic, the recommended thermostat setting for nighttime is between 60°F and 67°F. 3 Setting your AC within this range can help maintain a comfortable sleeping environment.

What should my AC be set on at night?

Recommended AC Temperature for Sleeping

The Sleep Foundation says 65° is the best temperature for sleeping. However, if you prefer a slightly warmer or cooler room, that's okay, too. The recommended range is 60–68°, so there is some wiggle room.

Is 72 too cold for AC?

While the standard room temperature of 72 degrees Fahrenheit is commonly favored by many, others argue for higher settings, particularly when it's hotter outside.

What AC mode is best for sleeping?

What Mode Should My Aircon Be On When Sleeping? We recommend setting your aircon to “sleep mode” when you're getting ready for bed. Sleep mode is an advanced function that allows your air conditioner to gradually increase the temperature throughout the night.

Does keeping the AC at 78 save money?

U.S. Department of Energy research suggests that setting your programmable thermostat to 78 during the summer months is the best way to save money on your cooling costs while maintaining a comfortable temperature.

Surviving Overnight in a Cyber Truck

What is the cheapest temperature to keep AC at?

According to the Department of Energy1, 78° Fahrenheit is the sweet spot for air conditioners to balance energy savings and comfort when people are at home and need cooling. But in reality, this is a question that doesn't have a “one size fits all” answer.

Is 82 too high for AC?

While ENERGY STAR suggests 82 degrees, that may be too uncomfortable for most families. Most people sleep better when their sleeping area is chilly, so that's why the National Sleep Foundation advises 60–67 degrees.

What is the best temperature to sleep with AC?

The best AC temp for sleeping varies depending on the individual, but most experts agree on a range between 60-67 degrees Fahrenheit (15-19 degrees Celsius). This is because your body temperature naturally declines as you sleep — so a cooler room could help facilitate this drop and encourage better sleep.

What is good night mode in AC?

The good'sleep mode is a special feature for the most comfortable sleep by automatically adjusting the temperature and humidity. This feature maintains optimal body temperature for maximum rest. In addition, it is able to reduce the energy consumption by 36% compared to the conventional cooling mode.

At what temperature does AC give the best cooling?

During the summer, the ideal room temperature is between 22 and 26 degrees Celsius. This temperature range is considered comfortable for most people during the summer months, as it helps keep the room cool while providing a comfortable living environment.

What should I set my AC to in summer?

What is the Best Thermostat Setting for Summer Air Conditioner Use? Energy Star recommends the following thermostat temperatures for your air conditioner in the summer: 78°F during the day if people are home. 82°F at night if people are home.

Why is my AC set to 74 but reads 78?

If the temperature is set to 74°F but the thermometer shows 78°F, you will have to recalibrate the thermostat to account for this 4-degree deviation. Even with older AC units or furnaces, you might have to recalibrate your thermostat from time to time.

Should AC be on auto or on?

There are benefits to having your air conditioner set to “auto” and “on.” The benefits of the “auto” setting include higher efficiency, lower energy bills, better humidity control, less wear and tear on some components, and quieter running.

How cool should my house be if it's 100 outside?

For many of us, 70 degrees is the ideal indoor temperature, but when it is close to 100 degrees outside, your AC unit will be working quite hard to meet these expectations. Consider setting your thermostat at 75 degrees to 80 degrees in your home if the outside temperature is approaching triple digits.

What is the perfect temperature to sleep?

The best room temperature for sleep is approximately 65 degrees Fahrenheit (18.3 degrees Celsius). This may vary by a few degrees from person to person, but most doctors recommend keeping the thermostat set between 65 to 68 degrees Fahrenheit (15.6 to 20 degrees Celsius) for the most comfortable sleep.

Is it OK to turn on AC all night?

While it's safe to leave the AC running all night. But you must take care of how much energy it consumes or if the cool and comfortable air is spreading equally throughout the room. If you are running your AC for long periods of time then try to keep your home ventilated by turning on a fan.

Which AC mode is best for sleeping?

Sleep mode is a low-power mode. The air conditioner will control the room's temperature in sleep mode and raise it by 0.5 to 1 degree Celsius in an hour, up to a maximum of 3 degree Celsius per hour. With this setting, the air conditioner will keep you cool and cozy all night.

How to minimize AC bill?

Tips to reduce AC bills
  1. Switch off when not in use. This is common sense, if practised properly will cut down AC bills. ...
  2. Set the temperature to the ideal level. ...
  3. Sealing the windows. ...
  4. Operate the AC and fan together. ...
  5. Regular service.

Should AC be left on at night?

Turning off your AC at night can prevent unnecessary strain on the system too, and optimize the performance of your heating. 'By implementing this practice, you not only save on utility bills but also promote the longevity and efficiency of your heating and cooling equipment, for when you need it most'.

Is 72 a good temperature for air conditioning at night?

The National Sleep Foundation says 60-67 is a good temperature for sleep, but that might be too cold for you and increase your cooling bill. As a compromise, 70-plus degrees is a good setting.

What should I set my AC at night?

The National Sleep Foundation recommends an optimal range to promote sleep, which is between 60 degrees and 67 degrees. Be mindful that this recommendation is for adults. For infants, for instance, the general recommendation is between 67 degrees and 69 degrees.

Which AC mode to use in summer?

When you activate dry mode, the fan on your AC is set to a higher speed, which helps circulate and draw moisture out of the air. Dry mode is especially useful during humid seasons such as summertime, when you may find yourself fighting against high levels of humidity in your home.

What is the best AC temperature for sleeping?

The best AC temperature for sleeping

The goldilocks zone: Aim for a temperature between 18°C (64°F) and 22°C (72°F) for optimal sleep comfort. Individual needs: Consider personal preferences and adjust the temperature accordingly. Some people may prefer slightly cooler or warmer settings.

What should I set my AC to on a hot day?

The recommended rule of thumb for summertime is to set the temperature to 78 degrees Fahrenheit when you're home and higher when you're away. In general, set it to 82 degrees Fahrenheit when you're asleep and 85 degrees Fahrenheit when you're away.

Does keeping the AC at 72 save money?

Best AC Temperature Settings While You Are Home

As you consider the most comfortable room temperature for your lifestyle and family, keep in mind that for each degree that you set your thermostat above 72 degrees, you can save up to 3% on your energy bill.

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