5 HVAC troubleshooting tips that every homeowner should know

April 28, 2023

Heating, ventilation, and air conditioning (HVAC) systems are essential in keeping our homes comfortable and safe, especially during extreme weather conditions. However, like any other mechanical system, HVAC systems may experience problems from time to time, which can cause discomfort and inconvenience.

HVAC tech troubleshooting error with system

Here are 5 HVAC troubleshooting tips that every homeowner should know:


Check the air filters

One of the most common problems with HVAC systems is dirty air filters. Dirty air filters restrict airflow, making your HVAC system work harder to maintain the desired temperature, which can cause higher energy bills and wear and tear on the system. Therefore, it is essential to check and change your air filters regularly, ideally every one to three months, depending on usage.


Check the thermostat

If your HVAC system is not heating or cooling properly, the first thing you should check is the thermostat. Ensure that the thermostat is set to the correct temperature and is on the correct setting (heat or cool). If your thermostat runs on batteries, replace them if they are dead. If your thermostat is outdated, consider upgrading to a programmable or smart thermostat, which can help you save money on energy bills.


Check the circuit breaker

If your HVAC system is not turning on at all, check the circuit breaker. The circuit breaker might have tripped, cutting off the power supply to your HVAC system. Reset the circuit breaker and check if your HVAC system turns on. If the circuit breaker keeps tripping, it may indicate a more serious problem, and you should call a professional HVAC technician for help.


Check the air ducts

If you notice that some rooms in your home are not heating or cooling properly, the problem might be with the air ducts. Check the air ducts for any visible damage, leaks, or blockages. If you notice any problems, contact a professional HVAC technician for repair or cleaning.


Schedule regular maintenance

Regular maintenance is crucial in keeping your HVAC system running efficiently and effectively. Schedule a professional HVAC maintenance service at least once a year, preferably before the start of the heating or cooling season. During the maintenance service, the technician will inspect, clean, and tune-up your HVAC system, ensuring that it is running at peak performance and efficiency.


In conclusion, HVAC systems are complex mechanical systems that require regular maintenance and attention to keep them running efficiently and effectively. By following these 5 HVAC troubleshooting tips, you can avoid costly repairs, extend the life of your HVAC system, and ensure that your home is comfortable and safe all year round. If you experience any HVAC problems that you cannot troubleshoot, contact Absolute HVAC Long Island for assistance.

share this

HVAC INSIDER

Related Articles

A man is fixing an air conditioner with a screwdriver.
July 18, 2025
At Absolute HVAC, we help customers recognize the early warning signs of AC trouble—before it turns into a full system breakdown during a heatwave.
A potted plant sits on a small table in a living room
July 14, 2025
We're now deep into July, and Long Island is feeling the full force of summer—high humidity, blazing sun, and constant AC use. For homeowners in Smithtown, Huntington, Islip, Patchogue, Riverhead, and beyond, your HVAC system is working harder than ever.
A close up of a red white and blue american flag
July 3, 2025
As fireworks light up the skies over Huntington, Smithtown, Islip, Patchogue, and Riverhead, there's one thing every Long Island homeowner wants this Independence Day—a cool, comfortable home.
ALL ARTICLES