Why Does My AC System Keep Freezing?

Mount Pleasant, TX, has hot summers, so it might surprise you to learn that your air conditioner can freeze when it’s blazing hot outside. If your AC system keeps freezing, it could have an issue that requires immediate attention. Several things can cause an AC system to form ice.

Airflow Blockage

The AC system has a metal coil called the evaporator coil. Refrigerant moves through this coil and causes it to get cold. When warm indoor air blows over the coil, the air becomes cool and flows throughout your home.

If anything blocks the airflow, it’ll prevent warm air from flowing over the coil. As a result, ice can form on the evaporator coil and cause your AC system to freeze up.

Not Enough Refrigerant

Low refrigerant causes the pressure in the system to drop, and the refrigerant gets colder than it normally does. This results in the evaporator coil being colder as well. The colder refrigerant plus the colder evaporator coil can freeze condensation that comes from the air conditioner.

The frozen condensation causes ice buildup that restricts air movement through the evaporator coil. A significant buildup of ice can cause the AC system to freeze.

The Coil Is Dirty

A dirty evaporator coil can block heat from transferring to the refrigerant that’s inside the coil. Until the dirty HVAC coil is clean, it’ll continue to get colder and collect condensation. Eventually, the condensation freezes and affects the air conditioner.

Blower Fan Malfunction

The air conditioner has a fan that uses a motor for power. The fan removes warm air from your home and pushes out cold air from the air conditioner. If the fan or the motor malfunction, it’ll cause an airflow problem. The lack of airflow will cause the evaporator coil to get too cold and freeze the condensation it collects.

Contact Wood Air Conditioning & Plumbing to discover why your AC system is freezing. Our company has decades of experience providing AC services to Texas residents. We offer AC repair, maintenance, installation and plumbing services.

Image provided by iStock

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