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The Top 5 Reasons Why HVAC Systems Stop Working

When your home’s HVAC system suddenly gives out, it can be a major inconvenience. Most issues will require professional expertise from an HVAC provider like Comfort Professionals. I understand the most common causes, which can help you troubleshoot and communicate to a professional what the problem may be. Here are five of the top reasons why your HVAC system might stop working:

  • Dirty air filters. This is arguably the most common and preventable problem. A clogged filter restricts airflow, forcing the system to work harder and reducing its efficiency. In extreme cases, a dirty filter can cause the evaporator coils to freeze, leading to a system shutdown. Regular replacement, typically every 1 to 3 months, is a simple fix.
  • Thermostat issues. The thermostat is the control center for your HVAC. If it has a malfunction, a dead battery, or is simply on the wrong setting, it won’t be able to communicate properly with the unit. Always check the settings and batteries first before assuming a bigger problem.
  • Refrigerant leaks. If your air conditioner is running but not cooling, a refrigerant leak could be the culprit. Refrigerant is the substance that cools the air, and low levels can prevent the system from performing its job. A leak can damage the compressor and should be addressed by a professional.
  • Clogged drain lines. As your air conditioner removes moisture from the air, it produces condensation that is funneled away through a drain line. Algae and gunk can clog this line, causing water to back up and triggering a safety shutoff switch. A musty smell or water pooling around the unit are common signs of this issue.
  • Electrical problems. An overworked system can cause a circuit breaker to trip, cutting power to the unit. Blown fuses, loose wiring, and failed capacitors are also common electrical failures. If your system has no power, check your circuit breaker box before calling a technician.

In all cases, a service call to HVAC professionals like Comfort Professionals is recommended. We can quickly identify the issue and get your HVAC system back online and working. Contact us today at (770) 756-5600 or complete the online inquiry form for a service request. When you need comfort, call Comfort Professionals.