Why is Your A/C Frozen in the Summer

Why is Your A/C Frozen in the SummerEven in the sweltering heat of a Florida summer, it’s possible for your air conditioning unit to freeze over. You may literally see ice on your unit. Water leaking from the unit and warm air coming out of the registers are other signs that indicate you could be having a frozen air conditioner. So what makes an A/C freeze in the summer? Let’s explore the two main reasons.

Airflow Restriction

If airflow is blocked, there isn’t enough air moving over your A/C system’s evaporator coil to dry the condensate that forms on it. If it’s been a while since you last replaced your filter, you might have discovered the root cause of your airflow problem. The dirtier your filter gets, the likelier it is to block airflow through your cooling system. You can easily prevent this problem by checking your air filter regularly and having it changed if it’s dirty.

Blocked registers could also severely restrict airflow. Check if household items are blocking your registers, and move them to allow free flow of air.

Insufficient Refrigerant

What if you have a frozen air conditioner yet you’ve been changing your air filter regularly? Your system may be having low refrigerant levels. This can be due to a leak or improper refrigerant charge. Low refrigerant makes your A/C coils hit the freezing point and ice over. If you allow this to go on for long, it could cause serious damage to your compressor.

Only a certified HVAC technician can pinpoint why your system is low on refrigerant and make the necessary repairs.

Once you figure out what’s making your A/C freeze and have it fixed, you’ll need to take precautions to prevent the same issue from reoccurring. The best precaution to take is to schedule A/C preventive maintenance at least once a year.

To schedule routine A/C maintenance, please contact us at NisAir Air Conditioning and Heating. Homeowners in Martin, Palm Beach, and Indian River Counties have counted on us for their air conditioning needs since 1973.

Our goal is to help educate our customers in Martin, Palm Beach, St. Lucie and Indian River Counties in Florida about energy and home comfort issues (specific to HVAC systems). For more information about other HVAC topics, download our free Home Comfort Guide or call us at 772-207-1658.

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    Phil Jr. and Christine Phil Jr. decided long ago to follow in his father’s footsteps working in the family business since he was a young teenager and Christine started working for NisAir in 1983 while still in high school. After graduation she continued to work at the business while attending the local community college for her career development... More »