How to Troubleshoot Common HVAC Problems Before Calling a Professional

When your HVAC system starts acting up, it’s tempting to panic and call in a professional right away. However, many HVAC problems can be solved with a little troubleshooting and some basic DIY fixes. 

Whether it’s uneven temperatures, strange noises, or reduced airflow, there are a few things you can check before scheduling a service call. By addressing these simple issues yourself, you can save time and the expense of an unnecessary service call.

Bryant Colorado has compiled a list of the most common ways to troubleshoot HVAC problems. If your problem needs professional attention, our Bryant Factory Authorized Dealers network is available to help throughout Colorado.

How to Troubleshoot Common HVAC Problems

Before scheduling a service call to a Bryant dealer near you, consider checking for the issues described below that are simple to fix on your own.

1. Check the Thermostat Settings

One of the most common reasons an HVAC system fails to heat or cool properly is due to incorrect thermostat settings. It might sound basic, but you’d be surprised how often this is the culprit!

• Temperature Settings: Make sure your thermostat is set to the desired temperature. If your thermostat is set to “Cool” and the temperature is set too high, the system will run inefficiently or not at all. The same goes for heating—if the temperature is set too low, you might not notice much of a change.
• Mode: Ensure your thermostat is set to “on” or “auto” and set to the correct mode (heating or cooling). If it’s set to “off” or in the wrong mode, your HVAC system won’t respond correctly.
• Program Settings: If your thermostat has programmable settings, check to see if the system is set to adjust temperatures throughout the day automatically. Sometimes, these settings can be mistakenly adjusted or overridden.

If you’ve confirmed that the thermostat settings are correct, but the HVAC still isn’t working, it may be time for a deeper inspection and other troubleshooting options.

2. Change or Clean the Air Filter

Dirty air filters are one of the most common causes of HVAC problems. When filters are clogged with dirt and dust, airflow is restricted, leading to uneven heating or cooling, reduced efficiency, or even system failure.

• How to Fix It: Turn off your HVAC system before removing the filter. Replace it with a new one or, if the filter is washable, clean it according to the manufacturer’s instructions. Make sure the filter is the right size and properly installed.

A clean filter can improve your system’s performance and prevent many common HVAC issues, including freezing coils, overheating, and short cycling. Schedule yourself a reminder to check your filter every month and change (or clean it) every one to three months as needed or as your HVAC manufacturer recommends.

3. Check for Blocked Vents or Ducts

Poor airflow due to blocked or closed vents is a common cause of uneven heating or cooling throughout the home. If you notice that some rooms are too warm or too cold, it could be due to closed or obstructed vents.

• How to Fix It: Go around your home and make sure all the vents are open and unobstructed. This includes checking that furniture, curtains, or rugs aren’t blocking the airflow. If you find any blockages, remove them and see if this improves the temperature balance.

Additionally, check for any visible damage to your ducts, such as holes or disconnections, which could reduce airflow. If you notice any significant issues with your ducts, it’s best to have a professional assess and repair them.

4. Inspect the Condensate Drain

The condensate drain removes moisture that builds up during the heat transfer process. If the drain is clogged, it can cause the system to stop cooling or heating effectively or even result in water damage.

• How to Fix It: Locate the condensate drain near the air handler or furnace. It may empty into a pan or connect to a pipe that drains condensation outside your home. Check for any visible clogs or obstructions. If you see any, use a wet/dry vacuum to clear them. You can also use a small, flexible brush to gently clean the drain or pour a small amount of vinegar into the drain pipe to help clean and clear the pipe.

If the condensate line is clear, but you’re still having issues, the problem may lie elsewhere in the system.

5. Reset the System

Sometimes, HVAC systems experience glitches or fail to start because of a temporary issue (like those listed above). A simple reset can often clear the internal sensors and restore your system to working order.

• How to Fix It: To reset your HVAC system, turn off the power to the unit (usually by switching off the breaker). Wait for 5-10 minutes, then turn the system back on. If this doesn’t clear resolved error codes, follow the steps in our System Reset Guide. This allows the internal components to reset and may resolve sensor issues that are preventing your system from functioning properly.

If resetting your HVAC system doesn’t solve the issue, especially after completing other troubleshooting tasks, there may be a more significant problem at play, and it may be time to reach out for professional help.

When to Call a Professional

While many HVAC problems can be solved with simple DIY fixes, some issues require professional attention. If you’ve tried the above steps and your system is still malfunctioning, it’s time to get expert help.

Don’t wait for small problems to turn into big ones—contact a professional HVAC technician for repairs if you notice:

• Persistent strange noises.
• Unusual smells coming from the system.
• The system is turning on and off frequently (short cycling).
• Ice buildup on the coils or ducts.
• Your system is still blowing warm air during cooling mode or cool air during heating mode.
• Troubleshooting and resetting have not resolved your HVAC problem.

Find a Bryant Factory Authorized Dealer

Troubleshooting common HVAC issues before calling a professional can avoid the expense of an unneeded service call or save time by eliminating potential causes for your HVAC technician.

When the problem requires more than just a quick fix, a Bryant Colorado HVAC dealer is ready to provide the expert help you need to keep your home comfortable.

Use our Find a Dealer page to locate a Bryant Factory Authorized Dealer near you in Colorado. These technicians are highly trained in Bryant systems and can quickly diagnose and repair any problems with your HVAC unit.