Your Comprehensive Troubleshooting Guide for Air Handler Breakdowns


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Your HVAC system’s air handler plays a pivotal role in keeping your home’s climate just the way you like it. But what happens when this vital component encounters glitches? As a homeowner, navigating air handler repair can feel like gliding through uncharted territory. Not to worry, though – this comprehensive troubleshooting guide has you covered.

Understanding the Basics of an Air Handler

Before delving into the troubleshooting process, it’s essential to understand what exactly an air handler is and how it functions. Simply put, an air handler is a component of your HVAC system that circulates conditioned air throughout your home. It typically consists of a blower motor, evaporator coil, filter racks or chambers for air filtration, and a heating or cooling element. So, when you’re adjusting the thermostat to your desired temperature, the air handler kicks into action to make it happen.  

Identifying Common Issues

Now that you know what an air handler does, look at some of the most common issues that can arise with this vital component. By familiarizing yourself with these problems, you’ll be better equipped to troubleshoot them and make informed decisions about repairs or replacements.  

Lack of Power

If your air handler isn’t turning on, the first thing to check is its power source. Ensure it’s plugged in correctly and the circuit breaker or fuse hasn’t tripped. If there are no issues with the power source, then it’s possible that the blower motor or control board is malfunctioning. In this case, it’s best to call a professional for further troubleshooting and repairs.  

No Air Flow

Another common issue with air handlers is no airflow from the vents. This can be caused by a clogged filter, which should be replaced every 1-3 months. If the filter is clean or has been recently replaced, a problem with the blower motor or belt may need to be inspected and repaired by a professional.  

Strange Noises

If you’re hearing unusual noises from your air handler, it could indicate several potential issues. A rattling noise could mean debris is stuck in the blower fan, while a high-pitched squealing could indicate a problem with the belt or motor bearings. In either case, it’s best to have a professional take a look and make any necessary repairs.

While some common air handler issues can be troubleshooted and fixed by homeowners, it’s important to remember that this vital component is complex and requires specialized knowledge for proper maintenance and repairs. If you encounter any major problems or are unsure how to handle an issue, don’t hesitate to call a professional HVAC technician. 


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