What Does a Technician Do When an AC Line is Frozen?

South End Plumbing, Heating, & Air Expert Tips

What Does a Technician Do When an AC Line is Frozen

Perhaps you have seen your air conditioning isn’t cooling your residence the way it should. Temperature levels are increasing inside your home and you go outside to check your unit and system. You’re seeing if you can find the issue. Despite it being 90 or 100 degrees outside, you discover that your air conditioning line is frozen and covered in ice. What!?

Figure out more about what could be causing a frozen AC line and what you can do to repair your system and bring your house back to a comfy temperature.

What Does a Technician Do With a Frozen AC Line?

A good technician will replace your filters if you have not done so already. If that’s not the issue, they’ll check your air conditioner’s different components to narrow it down. A great AC system expert looks at many different factors in order to recognize the underlying concern.

Frequently Asked Questions

What causes air conditioning lines to freeze up?

There are a few possible sources of a frozen air conditioning line. The first is minimized air flow brought on by a dirty filter or defective follower. The culprit might likewise be minimized atmospheric pressure brought on by a leakage or inappropriate temperature level settings.

How do you thaw an air conditioning system?

You can switch the device to “fan” mode and leave it there for 2-3 hours. This isn’t a permanent answer, however, it just defrosts whatever ice existed at the time.

How long does it take to thaw a frozen AC?

You should be able to attain this within 2-3 hours of using the system’s fan setting.

How much time should I leave my AC off while it’s iced?

If you’re making use of the fan mode setting, it should take 2-3 hours. You shouldn’t return the system to its default setting until you have solved whatever caused it to freeze in the first place.

Poor Air Flow Over the Evaporator Coil

When evaporator coils on an air conditioning device are too cold, the AC unit lines freeze. This is the key factor behind icy AC lines. The evaporator coils inside a cooling unit are full of cooling agent. An effectively operating AC system extracts the warm air from inside your home and sends it with your air conditioner where the evaporator coils cool the cozy air, then redistribute it back into the house.

If the air flow in the AC is blocked, it can cause the evaporator coils to end up being too cold, consequently causing the copper lines connected to your condenser to freeze.

What if DIY Doesn’t Fix the Frozen Air Conditioner Line?

Ok, so you’ve checked the vents, the filters, and have run the fan. When you have done all the ideas you can on your own, AC repair work may require a technician.

What will the pros find that you didn’t uncover by yourself? Issues that an HVAC professional can discover, detect, and fix could include any of the following.

Blower Motor

Does the fan sound different than it used to? Do you listen to the fan running at all? It could be the blower electric motor is not functioning correctly, stopping the fan from drawing warm air in, and causing the lines to freeze up. Your HVAC solution pro can deal with or replace the blower fan and put your air conditioner back in good working order.

Cooling Agent Leak

The problem could be as a result of a refrigerant line leak. Low levels of cooling agent can cause pressure to accumulate inside the lines, as well as ice to accumulate on the lines. If you hear sounds like hissing or bubbling near the frozen line, a leak could be the issue. Your heating and cooling technician can check for leaks and fix them so cool air can flow well and ice accumulation won’t happen.

Problem with Ductwork

A heating and cooling expert can also check for rips or cracks at ductwork connection points, or even failing ductwork. Once again, it’s about air flow, and if air ducts are damaged, the air is not streaming as it should, and one outcome of that can be frozen lines.

Whatever the issue, a licensed air conditioner service technician can examine your cooling and heating system, locate the problem, and fix it in time so bigger issues than a frozen line do not happen.

How Can I Stop Frozen AC Lines?

Once you’ve taken care of the trouble, how can you prevent it in the future? A great maintenance strategy can aid with this. In addition to making certain filters are changed, you’ll need to do a few other checks regularly. This includes the air conditioner’s evaporator coil. These can collect dirt with time, so cleaning up a dirty evaporator coil annually for an inside system ought to be sufficient. Inspect outside units much more regularly, as direct exposure to dust and dirt is a probability.

Coil fins can additionally get bent and trigger airflow to be lowered. You can discover a device called a fin comb that will straighten the fins and allow better air flow.

You can do these on your own. For more extensive upkeep and maintenance, have a qualified cooling and heating expert perform a service check and cleaning each year or at least every other year on your cooling and heating system.


At South End Heating and Air we are Charlotte’s affordable AC experts. Call us anytime for a free consult and free estimate. We’ll evaluate your system and help make recommendations for optimum value. After all, we want to keep you cool all summer long and warm in the winter. Just schedule a visit with one of our technicians to talk about how we can help. Would you like to learn more options our techs can help you with? Give us a call 704-684-5339.

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