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why is my air handler smells bad

HVAC

The answer to 'why is my air handler smells bad' is that there are several common causes, including mold or mildew buildup, rotting debris, or a dead animal in the ductwork. Symptoms may include a musty, unpleasant odor coming from the vents or air handler unit. This can indicate a problem that requires attention to maintain indoor air quality and prevent further issues.

In many cases, a smelly air handler can be addressed with DIY cleaning and maintenance. However, if the odor persists or you suspect a more serious problem, it's best to call in a professional HVAC technician to diagnose and resolve the issue properly.

Sources

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ASHRAE Standards• reference

Step-by-Step Guide

  1. 1

    Inspect the air handler

    Visually check the air handler unit and ductwork for any signs of mold, mildew, debris, or dead animals.

  2. 2

    Change the air filter

    Replace the HVAC air filter, as a dirty filter can contribute to odors.

  3. 3

    Clean the air handler

    Use a disinfectant cleaner to wipe down the interior of the air handler and ductwork to remove any buildup.

Frequently Asked Questions

How do I clean a smelly air handler?

You can try cleaning the air handler by removing any debris or buildup, changing the air filter, and using a disinfectant cleaner. But if the odor doesn't go away, it's best to have a professional inspect the system.

Is a smelly air handler a fire hazard?

A smelly air handler is not necessarily a fire hazard, but it can indicate an issue that should be addressed to prevent potential problems. Persistent odors may be a sign of mold, mildew, or other debris that could be a fire risk if left untreated.

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