Common Causes of AC Freezing and How to Fix Them
When summer temperatures rise in Richmond, a malfunctioning AC can quickly turn into a nightmare. One of the most common and frustrating issues homeowners face is frozen AC coils. This problem not only leaves your home uncomfortably warm but can also lead to costly repairs if ignored.
That’s where Blazer Heating, Air, and Plumbing comes in. As trusted experts in Richmond, we can quickly diagnose and fix frozen AC coil issues, ensuring your system runs smoothly and your home stays cool.
What Are AC Coils and Why Are They Important?
To understand frozen AC coils, you first need to know how your air conditioning system works. Central to this system are the evaporator and condenser coils. The evaporator coil is located indoors and absorbs heat from your home’s air, while the condenser coil, located outdoors, releases that heat.
For your AC system to function effectively, the evaporator coil must stay above freezing temperatures. If it dips below freezing, the moisture in the surrounding air can freeze, causing the coil to ice over. This disrupts your system’s ability to cool your home and can lead to more significant problems if left unaddressed.
Why Do AC Coils Freeze?
There are several reasons why AC coils may freeze, and many of them have to do with airflow or refrigerant issues.
Here are the most common causes to be aware of:
Low refrigerant: A refrigerant leak or undercharging can lower the evaporator coil temperature, causing it to freeze.
Poor airflow: Dirty filters, blocked vents, or dusty coils restrict airflow, preventing warm air from reaching the coils and causing freezing.
Mechanical issues: A faulty blower fan or damaged parts can reduce efficiency and lead to freezing.
Thermostat issues: A broken or improperly set thermostat can overwork the system, increasing the chance of frozen coils.
Locally, Richmond’s warm, humid summers and ample pollen can exacerbate these issues, increasing the chances of coil freezing if your system isn’t properly maintained.
What Happens When a Coil Freezes?
Frozen coils can wreak havoc on your AC system. Initially, you’ll notice a lack of cool air or reduced airflow from the vents. Over time, frozen coils can lead to increased energy bills since your HVAC system has to work harder to compensate for the reduced efficiency.
If left unaddressed, a frozen coil can cause permanent damage to your AC system, such as a cracked compressor or damaged refrigerant lines. This could result in extensive and expensive repairs, or even the need for a full system replacement.
Can I Run My AC With Frozen Coils?
No, you should never run your AC when its coils are frozen. Doing so can cause serious damage. If you notice ice on your unit, turn it off immediately. Running it in this condition strains the compressor and other parts, increasing the risk of damage. Turning it off lets the coils thaw and prevents further issues.
Can I Fix Frozen AC Coils Myself?
Fixing frozen AC coils isn’t as simple as it seems. Avoid scraping or chipping the ice, as this can damage the evaporator coil and lead to costly repairs. Don’t use a heat source or hairdryer either—sudden temperature changes can cause more harm.
Instead, follow these steps:
Turn off the system immediately to allow the coils to thaw naturally
Replace clogged air filters to improve airflow
Check for visible blockages near vents or around the unit that might be restricting airflow
Ensure the blower fan is functioning properly
While these steps can help address minor issues, it’s important to know your limits. If the problem persists, it’s time to call in the experts.
When to Call Blazer Heating, Air, and Plumbing
Frozen AC coils are a sign that something larger may be wrong with your system. A professional technician from Blazer Heating, Air, and Plumbing can diagnose the root cause and perform the necessary repairs to restore your AC’s functionality.
We proudly serve Richmond, Hanover County, and Henrico County, providing fast, reliable AC repairs and maintenance plans to keep your system running all summer. Regular maintenance helps prevent issues like frozen coils and unexpected breakdowns.
Don’t wait until a frozen coil leads to more severe damage. Contact us online or call (804) 277-2458 today for expert AC repair and maintenance in Richmond, Hanover, and Henrico!