What is the best AC temperature for sleeping in summer?

Author: Stephan Murray  |  Last update: Monday, July 21, 2025

However, many people prefer sleeping in a cool room, which may result in turning the thermostat down rather than up at night. The best temperature for sleeping in summer is said to be between 60° and 67°F.

Is 72 a good temperature for air conditioning at night?

The ideal temperature for your air conditioning at night can vary based on personal comfort, but many experts recommend setting it between 68°F to 72°F (20°C to 22°C) for optimal sleep. This range helps promote better sleep quality while also being energy efficient.

What should AC be set at night 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.

What temperature should the AC be when sleeping?

The ideal AC temperature for sleeping is around 65°F (18.3°C). However, this may differ between individuals, who might find their ideal AC temperature lies between 60 and 67°F (15.6 and 19.4°C).

Is 78 too hot for a house?

Quick answer: The ideal house temperature is room temperature, which ranges from 68 to 78 degrees F, though this may vary from season to season. In winter, the average room temperature is generally 62 to 68 degrees, whereas in the summer, the average temperature is 72 to 78 degrees.

Best Air Conditioner Temperature Setting (Sleeping or Awake During Summer)

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.

Is it safe to sleep at 78 degrees?

“Anything under 68 degrees overall is ideal for sleep. If you get too hot in the middle of the night, reduce layers of clothing or sheets, turn on fans, or drink a little cold water.”

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.

Is 75 degrees too hot to sleep?

Research shows sleep can be disrupted by temperatures anywhere below 65 degrees Fahrenheit or above 75 degrees Fahrenheit. But for most people, heat interferes with sleep more than cold does. Sleep experts believe the best temperature for great sleep is between 68-72 degrees Fahrenheit.

What is the best AC setting for a bedroom?

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 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.

What should I set my AC at during heatwave?

Rochester Electric and Gas recommends setting your thermostat at 78 degrees or higher, as each degree above 75 degrees saves 3% of energy on cooling. A higher internal temperature actually slows heat flowing into your living space, so it saves additional money on air conditioning.

Which AC temperature is best for an electricity bill?

Keeping a Reasonable Temperature: One will use 3 to 5 per cent less energy for each degree air conditioner is set above 25 degrees C to provide the most comfort at the least cost. Keeping ACs at (24–26 degrees C) can save electricity.

What should I set my AC on in the summer at night?

The commonly recommended AC setting for summer is 78 degrees. However, some people would have a hard time sleeping at that temperature. They sleep sounder in a cooler bedroom. If you have trouble sleeping at higher temperatures, try setting your temperature to 72 degrees or even a bit lower.

What temperature should my house be overnight?

To create that sleep-worthy environment, bedroom temperature should be kept at a consistent 17 degrees Celsius during the night, or at a minimum a few degrees colder than in the daytime.

Is it OK to run AC all night?

Running the “auto” function of your air conditioner all day and night isn't the best idea for any home. There are a few reasons you don't want to run your AC system all the time: System stress: Your air conditioner unit needs time to take a break.

What is the best temperature to sleep in 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.

How to sleep with a fan without getting sick?

Can you lower the risk of side effects caused by the fan?
  1. Keep your home clean. This might lower the chance of allergies or asthma flare-ups. ...
  2. Use an air purifier. ...
  3. Try a dehumidifier. ...
  4. Set a timer. ...
  5. Turn on your fan's oscillating feature. ...
  6. Keep your fan at a distance.

What is the healthiest room temperature?

In general, the ideal room temperature and your home for both efficiency and comfort fall somewhere between 68° and 76°F.

What temperature do most people keep their house at in the summer?

The average summer temperature is around 71°F. In winter, this falls just a touch to 70°F. Here's a winter breakdown for thermostat settings across the U.S., according to the survey participants: 47% set it between 68°F and 71°F.

How cool should my house be if it's 110 outside in summer?

Just because the outdoor temperature is above 100, the Ideal temperature to set your AC unit to doesn't change — it's 78 degrees. Higher temperatures in the home are to be expected when the weather is hotter than usual, but your thermostat can still be set the same as if it were a lower temperature outside.

How cool should my AC be able to keep my house?

Your AC has limits, no matter its age, how well it was installed, its manufacturer, etc. As a rule of thumb, when it's 95 out, your AC can cool your house to approximately 70-80. Your air conditioner will be able to cool to about 15-25 degrees from the outside temperature.

What is the healthiest temperature to sleep in?

Here are the ideal temperatures for a great night of sleep:
  • The best room temperature for sleep is between 66 to 72°F.
  • Your skin should ideally be between 88 to 95°F during sleep.
  • The temperature under your bed covers should be around 90 to 93°F with 40% to 60% humidity.

Which sleeping position is best?

Side sleeping helps prevent the airway from collapsing and can reduce snoring. "And so, all in all, sleeping on the side — perhaps with their head slightly elevated as long as that's comfortable — is a good way to sleep," says Dr. Krahn. Side sleeping also is recommended during pregnancy, especially the last trimester.

What is the best temperature for AC?

78°F is generally considered a comfortable temperature for most people in a house, especially in warmer months.

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