How to Troubleshoot Common HVAC Issues Before Calling the Pros Nov 03, 2025

When your HVAC system starts to falter, your home can quickly become uncomfortable. Before reaching for the phone to call in the experts at A/C Bros, there are several troubleshooting steps you can try first. These easy-to-follow steps might save you both time and money, and could restore your heating or cooling system to good working order. Here’s what you need to know about troubleshooting common HVAC issues.

First, check your thermostat settings. Sometimes the solution is as simple as adjusting a temperature setting. Ensure that your thermostat is set to the correct mode – heat for the winter months and cool for the summer. Often, programmable thermostats may have incorrect settings due to power outages or accidental button nudging. Replacing the batteries in a digital thermostat can also solve issues if the display isn't working.

Moving on, inspect your HVAC system's air filters. Dirty or clogged filters are one of the most frequent causes of HVAC issues. Air filters that are blocked with dirt and debris can reduce the efficiency of your system and hinder airflow. At worst, this can lead to overheating or your system shutting down completely. Make it a habit to check filters monthly and replace them every 30 to 90 days depending on the type and your usage. This simple maintenance step can significantly improve your HVAC performance and air quality.

Next, examine your circuit breakers. Power issues can easily cause your HVAC system to shut off suddenly. If you are experiencing a lack of heat or cool air, take a quick look at your circuit breaker box to ensure none have tripped. If you find a tripped breaker, flip it back into position and check if your system resumes normal operation. However, frequent tripping of circuit breakers shouldn’t be ignored as it could indicate electrical issues that need professional attention.

Pay attention to any unusual noises your HVAC system is making. Rattles, bangs, or squeals can all indicate different problems. For instance, a banging noise might suggest a loose component whereas a screech could point to a worn-out belt. Knowing these sounds helps in understanding what might be wrong and can guide any further action or when describing the issue to a professional later.

Another area to explore is checking the vents and registers in your home for blockages. Furniture, toys, and even rugs can inadvertently block airflow to rooms, resulting in uneven heating or cooling. Ensure all vents are open and free from obstructions to facilitate proper airflow.

It's also important to look at your outside unit if you have central air conditioning. Debris such as leaves, dirt, or even nests can accumulate around the unit, hindering its function. Carefully clear away any obstructions and make sure there’s at least two feet of clear space around the unit for optimal airflow.

However, if after taking these steps your HVAC issues persist, it might be time to consult the professionals at A/C Bros. Some problems, such as refrigerant leaks or electrical faults, require expert knowledge and equipment to address safely and effectively.

In conclusion, troubleshooting your HVAC system before calling in professionals can often resolve minor issues and save you service costs. Regular maintenance and being aware of how your system behaves under normal conditions can prevent many of these common problems. When in doubt, don’t hesitate to contact A/C Bros for their expert HVAC services and to ensure your system is running efficiently and safely.