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why is my air handler freezing up

HVAC

The answer to 'why is my air handler freezing up' is that there are several common causes, including a dirty air filter, low refrigerant levels, or a problem with the blower fan. When the air handler freezes up, it can restrict airflow and cause the system to malfunction.

Some key symptoms of a frozen air handler include reduced airflow, ice buildup on the coils, and the system shutting off unexpectedly. Addressing the root cause is important to prevent further damage and restore proper operation.

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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 dirty filter can restrict airflow and cause the air handler to freeze up.

  2. 2

    Allow the system to thaw

    Turn off the system and allow the air handler to thaw completely before attempting any other troubleshooting. This can take several hours.

Frequently Asked Questions

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

Signs of a frozen air handler include reduced airflow, ice buildup on the coils, and the system shutting off unexpectedly.

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

If you notice your air handler freezing up, turn off the system and allow it to thaw completely before troubleshooting further. Dirty air filters, low refrigerant, or a problem with the blower fan are common causes that may require professional repair.

When should I call an HVAC technician for a frozen air handler?

If you're unable to identify and fix the root cause of the freezing, or if the problem persists after cleaning the air filter and allowing the system to thaw, it's best to call a qualified HVAC technician to diagnose and repair the issue.

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