What happens if I set my AC too low?

If you lower the thermostat so it's set more than 20° lower than the current outside temperature, the AC won't be able to reach its target temperature. Instead, it will run and run, wasting larger amounts of energy and wearing down, possibly leading to it overheating and shutting down.

Is it bad to run AC on lowest temp?

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.

Is 67 too low for AC?

Setting the thermostat at a very low temperature is not good for your air conditioner. Setting your temperature at around, 60-67 degrees, prevents less heat exchange through the evaporator coil, meaning that there isn't enough warm passing through your evaporator to effectively keep it from freezing.

Is 70 too low to set AC?

It's best to not set your thermostat lower than 70 to 72 degrees. Most units are not designed to cool a house below that point, and you risk the system freezing up. I recommend trying to keep your house below 80 degrees at all times during the summer.

Is 72 too low for AC?

When setting your thermostat, most homeowners find 72 is a good temperature for air conditioning. However, you may need to adjust that setting based on weather conditions. The bigger the difference between indoor and outdoor temperatures, the higher your energy bill will be.

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Can I set my AC below 68?

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.

Is 75 too cold for AC?

Typically, our bodies are most comfortable when the air inside our home is 74-76 degrees. So, a safe setting is 75 degrees. However, this is only necessary when you're in your home.

What is the lowest you can set AC?

The 20°F Limit

That's true no matter what type of AC you have. If the unit was sized correctly, neither too large nor too small for the house, it has the capacity to remove enough heat to the outside to lower the temperature by 20°F. In most situations, this is more than enough to enjoy comfort.

What is the lowest you can put the AC on?

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.

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

The majority of air conditioning units are designed to only cool the air about 20 degrees from the outside temperature. If the temperatures outside are approaching triple digits, you should set your thermostat at about 78°.

Is it OK to set AC to 65?

Generally, most AC units will do well with a thermostat set somewhere between 65 and 80 degrees.

Can setting your AC too low cause it to freeze?

Having your thermostat set too low can cause your air conditioner to run constantly, which can eventually drop the temperature of your evaporator coil to below freezing.

How low is too low for thermostat?

How Low is Too Low to Set My Thermostat? If you're going to be leaving your home or traveling for the winter, it's best to keep your thermostat set no lower than 55 degrees. If you don't, you could risk having your pipes freeze over.

What is the healthiest AC temperature?

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.

Is 50 too cold for AC?

It's advisable to turn on your AC if the temperature is about 59 degrees Fahrenheit or higher. This way, the oil that lubricates the parts of the AC will warm up before running through the equipment. Also, this practice will ensure there's no ice inside your condenser before you turn it on.

How low can you set AC in summer?

The DOE Has Declared the Best AC Temperature for Summer

According to the DOE, the best AC setting for summer is 78 degrees. Once you go lower than 78 degrees, you run the risk of increasing your energy bill by about 4-6% per degree.

How cool should my house be if its 90 outside?

They recommend that when it's 90 degrees outside, you should try setting your air conditioning thermostat at 80 degrees or higher. And when it's 95 to 100 degrees outside (and higher), you should set your thermostat at 85 degrees or higher.

What should AC be set at in summer?

You want to be comfortable this summer without spending a lot of money on air conditioning, right? While you ultimately must decide what temperature you feel comfortable at, the US Department of Energy and Energy Star suggest that the best AC temperature is 78°F for summer days.

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. Since 69 is above that temperature, it would most likely be safe.

What is the best AC temperature for sleeping?

Sleeping in a room with the air conditioner set to an appropriate temperature is important for quality sleep. 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 62 too low for thermostat?

If you're gone during the daytime, you can set the temperature lower for a total of about 16 hours per day. Unless there are health problems in your family, 62 degrees should be comfortable if you're wearing long sleeves or a sweater. Let comfort dictate how low you initially set the thermostat.

Is 60 too low for thermostat?

For short periods of time away, like going to work, we'd recommend a temperature of around 55 – 60 degrees (F). While away on long periods of time, such as vacation, we don't recommend setting the temperature any lower than 50 degrees (F).

Will a lower temp thermostat cause overheating?

A low-temp thermostat gives the cooling system a head start. This will help to prevent Engine Detonation and overheating.

Why won t my AC go below 68?

Many residential split system AC units are not designed to operate below 70 degrees. If turned to below 70, then the indoor A coil may accumulate ICE, and once it starts, it'll simply freeze A coil over (usually in the middle of the night!).

Is 68 good for AC?

Recommended thermostat settings are 68°-70°F or lower for heating and 76°-78°F or higher for cooling. These settings should provide a comfortable environment within the home. Each degree higher than 68°-70°F can increase heating costs by 1-3%, and each degree below 76°-78°F can increase cooling costs by 3-5% or more.