How to Troubleshoot Common HVAC Issues Before Calling a Professional Oct 19, 2025

When temperatures soar in summer or plummet in winter, a well-functioning HVAC system becomes essential for comfort. At Bolen HVAC, we understand the frustration when your heating, ventilation, or air conditioning stops working as expected. Before you reach for the phone to call in professionals, there are some common HVAC issues you can troubleshoot on your own. This can save you time and potentially the cost of unnecessary service calls.

Check the Thermostat

One of the simplest yet often overlooked issues is a malfunctioning thermostat. Ensure that it is set to the correct mode, whether it's heating or cooling. Also, check that the temperature setting is appropriate for the season. If your thermostat is battery-powered, replace the batteries. If it's programmable, verify that it is correctly configured according to your schedule.

Inspect the Air Filters

Dirty air filters are a common cause of HVAC problems. They can restrict airflow, reduce efficiency, and even lead to system shutdowns. To troubleshoot this, check the filters and clean or replace them if they appear dirty or clogged. Regular maintenance, such as monthly filter checks, can improve air quality and system performance.

Examine Circuit Breakers

Sometimes, HVAC systems stop working because of a tripped circuit breaker. Locate the breaker panel in your home and look for any switched-off breakers. If you find one, switch it back to the "on" position. If the same breaker trips repeatedly, seek professional help from Bolen HVAC, as this could indicate a more serious electrical problem.

Clear the Area Around the Outdoor Unit

If your system's outdoor unit is clogged with debris, it may not function effectively. Inspect the area around the unit and clear any leaves, dirt, or other obstructions. This will ensure proper airflow and increase the efficiency of your HVAC system. Consider scheduling regular maintenance to prevent debris buildup.

Check for Blocked Vents

Blocked vents can greatly affect your HVAC system's efficiency. Walk through your home and ensure all vents are open and unobstructed by furniture, curtains, or other objects. Proper airflow is crucial for maintaining a consistent temperature and energy-efficient operation.

Monitor Unusual Noises

Unusual noises like banging, clanking, or screeching from your HVAC system could indicate internal issues. While some sounds may simply require a filter change or a minor adjustment, others could be a sign of a more significant problem. If simple troubleshooting doesn’t resolve the noise, you may need to call in the professionals at Bolen HVAC for a more in-depth inspection.

Conclusion

Before calling a professional HVAC service, there are several troubleshooting steps you can take that may solve common issues. By starting with checking your thermostat settings, inspecting filters, and examining circuit breakers, you might resolve the issue on your own. For persistent problems or any serious concerns, it’s always best to consult experts like Bolen HVAC. Regular maintenance, such as clearing debris and ensuring unblocked vents, will not only prevent issues but also extend the life of your unit. By following these tips, you can enjoy more reliable performance and increased comfort from your HVAC system.