Early January saw unusual 20-degree temperatures across northern Georgia and spots of unwelcome winter weather. However, freezing outdoor temperatures are not the only reason your commercial HVAC system may freeze up. Other issues can cause your outdoor units to ice up and disrupt heating efficiency, leading to costly repairs and downtime for your business.
Causes of Icing in HVAC Systems
Aeras Building Solutions in Atlanta shares some reasons (besides the weather) that your commercial HVAC units can ice over.
- Insufficient Airflow: One of the most common reasons for icing is restricted airflow. The National Comfort Institute, Inc. says that “Low equipment airflow is the number one issue contributing to low system performance.” This can happen due to clogged air filters or obstructed ducts. When the airflow is insufficient, the evaporator coil can become too cold, causing moisture in the air to freeze.
- Low Refrigerant Levels: Refrigerant is essential for your HVAC system’s operation. If there’s a refrigerant leak or the system was undercharged during installation, the pressure in the system will drop, which can cause the evaporator coil to freeze.
- Improper Thermostat Settings: Incorrect thermostat settings can cause an HVAC system to operate inefficiently. Ensure that your thermostat is calibrated correctly and set to an appropriate temperature for winter.
- Dirty Coils: The evaporator coils should be clean to ensure proper heat exchange. Dust, dirt and grime can accumulate on the coils, insulating them and preventing them from absorbing heat effectively. This can lead to freezing.
- Defrost Cycle Issues: Many commercial HVAC systems are equipped with defrost cycles to prevent icing during cold weather. If the defrost cycle isn’t functioning correctly, it may not activate when needed, allowing ice to build up on the coils.
It’s always best to have a professional commercial HVAC technician from Aeras Building Solutions check your HVAC system regularly, and at the first sign of any problem to prevent costly breakdowns.
Commercial HVAC Preventive Maintenance
Consider partnering with Aeras Building Solutions for preventive maintenance during winter to minimize the risk of icing on your commercial HVAC system. Our specialists check for issues such as airflow restrictions, refrigerant levels and coil cleanliness. We change your air filters regularly because dirty filters can impede airflow, leading to potential icing. Our team also check for any blockages or leaks in the ductwork that may restrict airflow to the system.
- Maintain your equipment to maximize the value of your system.
- Regular maintenance avoids voiding your equipment warranty.
- Extend your HVAC system’s lifespan.
- Prevent unexpected breakdowns and downtime.
- Preserve climate control for enhanced productivity and comfort.
If left unchecked, icing on your commercial HVAC system during winter can cause discomfort and potential damage. By understanding the common causes and taking proactive steps to maintain your system, you can ensure a comfortable and efficient environment throughout the winter months. If icing persists despite your best efforts, consult the HVAC professionals at Aeras Building Solutions in Atlanta to identify and resolve the issue effectively.
Posted on behalf of
