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air handler freezing up

HVAC

The answer to 'air handler freezing up' is that a frozen air handler is a common issue that can be caused by a variety of factors, including low refrigerant levels, a blocked air filter, or a problem with the blower fan. Symptoms of a frozen air handler include reduced airflow, icy coils, and the unit not turning on.

To fix a frozen air handler, the first step is to turn off the unit and allow it to thaw completely. Once it's thawed, you can check the air filter and clean or replace it if needed. You can also check the blower fan to ensure it's working properly. If the issue persists, it may be due to a refrigerant leak, which will require the help of a professional HVAC technician to diagnose and repair.

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ENERGY STAR• authority
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Step-by-Step Guide

  1. 1

    Turn off the air handler

    Shut off power to the air handler at the circuit breaker or disconnect switch to prevent further damage.

  2. 2

    Allow the unit to thaw

    Let the air handler thaw completely, which can take several hours or even a full day, depending on the extent of the freezing.

  3. 3

    Check the air filter

    Once the unit has thawed, inspect the air filter and clean or replace it if it's dirty or clogged.

  4. 4

    Inspect the blower fan

    Ensure the blower fan is working properly and not obstructed by debris.

  5. 5

    Call a professional

    If the issue persists, or if you suspect a refrigerant leak, it's best to call a licensed HVAC technician to diagnose and repair the problem.

Frequently Asked Questions

How do I prevent my air handler from freezing up?

To prevent your air handler from freezing up, be sure to regularly clean or replace the air filter, keep the area around the unit clear of debris, and have a professional perform annual maintenance to ensure the system is working properly.

What happens if I try to run a frozen air handler?

If you try to run a frozen air handler, it can cause further damage to the unit and potentially lead to a complete system failure. It's best to turn off the unit and allow it to thaw completely before attempting to run it again.

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