If you notice ice in your air conditioning system, it can be alarming. However, a frozen-over unit is a fairly common problem and could be caused by a few different things. Fortunately, some of these issues that could cause ice to form in your AC unit are easily fixed. With the right knowledge and preparation, you can keep your air conditioner from freezing over and ensure your system is running efficiently and effectively. Keep reading to learn more about how to fix and prevent ice inside AC unit.
Inadequate or Obstructed Airflow
In order for your AC unit to function properly, it must have adequate airflow. A clogged air filter is one of the most common causes of a frozen evaporator coil. A clogged air filter prevents the air from flowing properly through the system, resulting in a decrease in air pressure and a decrease in air temperature. This change in temperature can cause the system to freeze up, as the air cannot escape the unit. To prevent a clogged air filter from causing a frozen AC unit, the filter should be inspected and changed regularly. It is suggested that homeowners change HVAC air filters at least every 90 days.
Ensuring that your ductwork is free from obstructions and leaks is also an important step in preventing frozen equipment. When obstructions or leaks occur in the ductwork, it can cause the temperature of the evaporator coil to drop below freezing, resulting in a frozen coil. It is important to check for any obstructions or leaks in the ductwork regularly to ensure adequate airflow.
Additionally, shrubs, debris, and other items can block off the outside unit and prevent adequate airflow. As part of your routine home maintenance, you should prune the trees and shrubs around your unit and ensure that it is clear of any obstructions.
Low Refrigerant Levels
One of the most important steps to preventing a frozen AC unit is to check and maintain the refrigerant levels in your system. When there is an inadequate amount of refrigerant in the system, the liquid line can become too cold, causing the evaporator coil to become frosty.
A leak in the system is usually the primary cause of low refrigerant levels. This can be due to aging or damaged pipes, a defective compressor, incorrect installation, sizing issues with your unit, and even manufacturing defects. To prevent this from occurring, it’s important that you get regular checks on your refrigerant level as well as annual maintenance for optimal performance.
Dirty Evaporator Coil
Having a dirty evaporator coil is a common problem that can cause several issues with your HVAC. If the evaporator coil of your HVAC equipment becomes dirty, it will not be able to absorb heat from the air in the home efficiently. This can lead to a change in the temperature of the refrigerant, causing it to become too cold and potentially leading to the freezing up of the entire system.
To prevent a dirty and frozen evaporator coil, you should clean the entire unit frequently. Carefully inspect the evaporator coil for dirt and debris, and if any is present, use a shop vac or soft brush to remove it. Having seasonal maintenance performed by an HVAC technician annually will also ensure that your system is clean and efficient.
Overall, preventing a frozen AC unit is essential to keeping the air conditioning system running efficiently and effectively. Regular maintenance and inspections are key to ensuring that the system is working correctly and that any issues that arise are addressed promptly. Preventing your evaporator coil from freezing up is essential to ensuring comfortable temperatures in your home year-round.