What is the lowest temp you can run AC?

Air conditioners are not designed to operate in or produce temperatures below 60 degrees. Truth be told, they're happiest around the 68 degree mark. Most thermostats simply won't allow you to choose a setting below this mark.
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What temperature is too cold for AC?

In most cases, especially in residential applications, you should not run your air conditioner when outdoor temperatures are below 60 degrees. The air conditioner does function, but you are going to burn out the compressor fairly quickly.
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Is it bad to run AC below 60 degrees?

This is because this is usually below the comfort range for most people and is often unnecessary in most residential settings. Running the AC when it is below 60 degrees outside can result in failure of the compressor.
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What is the lowest you can run AC?

Because it is outside most people's comfort zone, practically all air conditioning systems are designed to ensure that the system will not run when the outside temperature is below 60 degrees Fahrenheit. In most cases, running an air conditioner below this temperature is not safe.
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How low can you set your AC before it freezes?

Additionally, lower settings can cause your evaporator coil to freeze. There isn't enough heat exchange, so ice forms on the coil, causing the system to stop working until it defrosts. Any temperature below about 68 degrees puts you in danger of freezing.
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Best AC Setting For Cooling: Best Air Conditioner Temperature to Save Money, Set AC to Auto or On?

Is 65 too low for AC?

Generally, most AC units will do well with a thermostat set somewhere between 65 and 80 degrees.
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Will AC freeze if it runs all day?

Unfortunately, it's possible for your air conditioner to become overworked, and actually restrict the airflow to your home. As toasty as it may be outside, your air conditioner can actually become frozen. If this has happened to your air conditioner, don't panic.
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Is it OK to run AC at 30 degrees?

It is absolutely safe to use ACs of all types. One should set the temperature between 24 to 30 degrees centigrade. The humidity is automatically taken care of. In central ACs, fresh air ventilation is part of the AC system.
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What happens if you set your AC to 50?

The refrigerant no longer absorbs as much heat and the temperature in the coil drops, causing the evaporator coil to freeze and making the system inoperable until it defrosts. Thus, temperature setting below 68 degrees is generally not recommended for optimal performance.
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Is 67 too low for AC?

The Average Ideal Indoor Temperature

This ideal indoor temperature changes throughout the day. For example, people sleep better at night when the temperature is lower—somewhere between 60 to 67 degrees. During the day, you shouldn't set your temperature lower than 68 due to hypothermia risks.
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Can I run my AC in 40 degree weather?

HVAC manufacturers usually recommend that users do not operate their units for prolonged periods of time if the temperature is lower than 65 degrees Fahrenheit. If you need to test your unit, then you should wait until the temperature has been above 60 degrees Fahrenheit for at least three days first.
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Is it OK to set an AC below 70?

Once you have the right-size air conditioner, there's still an ideal temperature range to consider. It's best to not set your thermostat lower than 70 degrees in the summer. Most AC units are not designed to cool a house below 70 degrees, and you risk the system freezing up.
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Is 50 degrees cold for AC?

Conclusion. Just like any other appliance, your air conditioning unit also has limitations. For one, it's not advisable to turn it on when the outdoor temperature is lower than 59 degrees Fahrenheit.
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Can I set my AC to 65 at night?

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).
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Is 64 too cold for AC?

Will running AC under 65 degrees damage it? No, running an air conditioner in cold weather will not damage it. However, if the temperature outside is below 60 degrees Fahrenheit, the air conditioner will not be as effective at cooling the air inside the home. The same applies for running AC below 60 degrees as well.
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Is 69 too cold for AC?

Turning your AC to 69 degrees is getting relatively close to the “danger zone” for causing it to freeze up and break. Typically, we recommend keeping your thermostat set to no less than 68 degrees.
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Can you damage AC by setting it too low?

Reduce Wear and Tear on Your System with a Programmable Thermostat. Lowering the temperature too much can ultimately reduce the lifespan of your AC system, and it raises your monthly bills. But this is tough to remember when you come home to a living space that feels like an oven.
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How low can I set my AC on a 100 degree day?

A good rule of thumb is during the hottest days when the dial reaches 100 degrees it is best to set your AC to somewhere between 75 and 80 degrees.
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How low can I set my AC in the summer?

While the DOE recommends 78 degrees Fahrenheit for the air conditioner temperature in summer, everyone has different comfort levels. Most air conditioning suppliers will recommend a setting of between 72-78 degrees Fahrenheit while you are in the house.
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Can an AC really make the room go to 20 degrees?

The fact that your AC can't do more than 20 degrees is not a fault—it's actually a blessing. Your AC was designed that way for a reason. In order to cool your home by anything more than 20 degrees, the air coming out of your AC would have to be frigid—we're talking breath from an ice queen frigid.
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Can you overwork an air conditioner?

If your AC blasts air that is not cool enough, it can be a sign of overworking. Set a schedule with a technician to have it checked thoroughly. If the problem is on the refrigerant, that means you need to get a new AC.
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Can an overworked AC freeze up?

So you've found your air conditioner frozen, and you're wondering if it's a serious issue. The first thing you should check is your thermostat since it could be causing your AC unit to work too hard, leading the machine to run too long and cause the coils to freeze over simply due to overwork.
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Is it bad for central AC to run constantly?

Modern air conditioning units are designed to run 24 hours a day. There is no harm in having it run to keep your home cool all day long. If you wanted to, you could have your AC unit running 24 hours a day, seven days a week. If your thermostat is set on “auto”, your AC compressor does not run 24 hours a day.
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Is 68 too cold for air conditioning?

The lower limit

Even when the temperature outside isn't at heatwave levels, we recommend you don't lower the AC's setting below 68°F. This temperature is already more than cool enough for most people, and many will find it too cold.
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Is it OK to keep AC at 68 degrees?

According to the US Department of Energy, it's best to keep your thermostat at 68 degrees Fahrenheit for most of the day during the winter season. For maximum efficiency, you should also designate eight hours per day during which you turn the temperature down by between 7 and 10 degrees.
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