Why Is My Air Conditioner Unit Freezing Up

When you experience a freezing air conditioner it is important to determine what is causing it.

Why is my air conditioner unit freezing up. Now it s just a matter of waiting for your air conditioner to thaw out and cleaning up the melted water right away. You can detect this when you notice frost on the copper tubing of the unit or on other components of the ac. Now let s take a look at the 2 possible reasons your ac is frozen. We don t need to go too in depth so bear with me but understanding this principle is the key to figuring out why your air conditioner is freezing up.

The freeze can easily back up all the way to your condenser unit outside causing problems. As a general rule air conditioners are designed to cool most efficiently to about 68 degrees f. Start with what you might be able to fix air flow issues. These 1 inch throw away filters that are often overlooked are the most common cause of the air conditioner freezing up.

Don t run your ac until you ve determined the issue and resolved it. The joule thomson effect is a principle in thermodynamics which states that if everything else is kept constant. 3 air conditioner freezes up low outdoor temperature another possible cause is when you are operating your air conditioner when the outdoor temperature outside the house is low. There are several reasons why your outdoor ac components might freeze up and we ll explore them in a bit.

There is literally ice on the outdoor unit even in this incredible heat. However this is not possible when your air conditioning runs into problems. Check and replace the return air filters. Temperatures below 62º f will cause your system s pressure to drop and this will cause it to freeze or ice up.

When this happens try to run the air conditioner using fan mode or simply use the outside air to ventilate your room. Check for a secondary or whole house filter usually a 2 4 inch thick filter located right at the furnace or air handler. Keep an eye on the unit. They can go colder but setting the temperature way down can cause the unit to freeze up.

The joule thomson effect how your air conditioner freezes up. The main reason units freeze up is low coolant. If it starts freezing up again or loses its cool air ability then you probably have a leak. This is why it is important to not run your ac during cold weather.

Your air conditioner is designed to operate in outdoor temperatures that are above 62º f. Standby for a small high school physics lesson. So it s 93 degrees outside and your air conditioner froze up. Contact an hvac technician to check the charge of your unit and add coolant if needed.

Finally you may simply be setting your air conditioner too low.