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Why is my air handler freezing up

HVAC

The answer to 'why is my air handler freezing up' is that a frozen air handler is usually caused by a lack of airflow across the evaporator coil. This can happen for several reasons, such as a dirty air filter, a problem with the blower fan, or low refrigerant levels.

Some common symptoms of a frozen air handler include reduced airflow, ice buildup on the coils, and the system not cooling effectively. If left unchecked, a frozen air handler can eventually lead to compressor damage and complete system failure.

Sources

1.
ENERGY STAR— authority
2.
HVAC.com— guide
3.
ACCA— authority

Step-by-Step Guide

  1. 1

    Check the air filter

    Start by checking the air filter and replacing it if it's dirty or clogged. A clean filter allows proper airflow.

  2. 2

    Clear any blockages

    Make sure there are no obstructions or debris blocking the airflow around the air handler.

  3. 3

    Call a professional

    If the freezing persists after changing the filter and clearing blockages, it's best to call an HVAC technician to diagnose and repair the issue.

Frequently Asked Questions

What causes an air handler to freeze up?

The most common causes are a dirty air filter, blower fan issues, or low refrigerant levels.

How do I know if my air handler is freezing up?

Signs include reduced airflow, ice buildup on the coils, and the system not cooling properly.

What should I do if my air handler is freezing up?

Try changing the air filter and clearing any blockages. If the issue persists, it's best to call a professional HVAC technician to diagnose and repair the problem.

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