10 Most Common HVAC Problems

As a homeowner, you know that little things always pop up around the house that need to be fixed. But when it comes to your HVAC system, you may not know what problems are common and how to fix them. Here are 10 of the most common HVAC problems homeowners encounter. Learn when to call a professional and when you can fix it yourself!

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10 Most Common HVAC Problems

1. Thermostat Problems

When it comes to the comfort of your home, thermostat problems can be a major headache. Your thermostat plays a crucial role in controlling the temperature, and any malfunction or failure can result in uncomfortable indoor conditions. Whether it’s an inaccurate set point, unresponsiveness to adjustments, or even lockout due to coding issues, diagnosing and solving thermostat problems is essential. Thankfully, most thermostat issues can be relatively easy to address. By consulting professional technicians or manufacturer information, you can quickly troubleshoot the problem and restore a comfortable temperature inside your home.

2. Dirty Air Filters

Don’t underestimate the impact of dirty air filters on your HVAC system’s performance. When air filters become clogged with dirt and dust particles, they restrict airflow, putting strain on the motor and decreasing energy efficiency. Not only that, but dirty air filters can also release pollutants into the air, affecting the overall air quality in your home. To avoid these issues, make sure to regularly change your air filters as part of routine maintenance. By doing so, you’ll ensure that your HVAC system operates efficiently, maintaining a comfortable and healthy living environment.

3. Fan Motor Issues

If you’re experiencing problems with heating or cooling in your home, fan motor issues could be to blame. Fan motors can fail for various reasons, including age-related strain, voltage fluctuations, or faulty wiring. However, replacing a fan motor is not a task to be taken lightly and is best left to professionals. If you suspect fan motor issues in your HVAC system, it’s crucial to contact a reliable technician promptly. Their expertise will help prevent the problem from escalating and ensure that your heating and cooling systems function optimally.

4. Compressor Problems

For businesses relying on air conditioning systems, compressor problems can quickly turn into a nightmare. As the heart of the HVAC system, compressor issues can cause minor disruptions or major operational failures if not properly maintained. Common causes of compressor problems include dirty coils, overworked components, and insufficient lubrication. Ignoring these issues can lead to higher repair costs and potential replacements, impacting your operations. While diagnosing compressor failures can be complex, understanding common HVAC compressor issues is essential for protecting your air conditioning system and maintaining uninterrupted functionality.

5. Insufficient Heating/Cooling

Few things are as frustrating as inadequate heating or cooling in your home. This problem can have various causes, such as low airflow or a clogged filter. It may also be due to an undersized HVAC unit for the space you’re trying to regulate. If your HVAC unit seems to be running continuously but fails to achieve the desired temperature, it’s crucial to call a professional for diagnosis. Insufficient heating or cooling not only compromises your comfort but can also lead to higher energy bills. Seeking expert assistance will ensure that the root cause of the problem is identified and resolved effectively, providing you with optimal comfort and energy efficiency.

6. Noisy Operation

While HVAC units naturally produce some noise during operation, excessive or unusual noises can signal problems. If you notice your HVAC unit getting louder over time, it’s time to take action. Noisy operation can indicate damaged components like bearings, motors, or fans that require replacement to restore quiet functionality. Ignoring the issue may lead to further damage that could be irreparable, necessitating a full unit replacement. To avoid this, it’s recommended to contact a professional technician who can diagnose the problem and recommend the appropriate repairs before it becomes a more costly and disruptive issue.

7. Unit Not Running

When your HVAC unit fails to turn on, it’s important to investigate the cause. It could be a blown fuse or a tripped circuit breaker in your home’s electrical system. However, it could also indicate a more severe failure within the unit itself, requiring professional servicing. The range of potential problems, when your HVAC unit is not running, can vary significantly. If your unit is relatively new, a minor electrical error is the likely culprit, easily fixable by a technician. However, if your unit is over 10 years old, it may be a sign that it’s time to consider replacing it with a more energy-efficient model. Consulting a professional technician will help determine the best course of action to restore your HVAC unit to working condition.

8. Inadequate Air Flow

Poor airflow can lead to uneven temperatures throughout your home or business premises, resulting in discomfort and inefficient heating or cooling. This issue often stems from dirty and clogged filters, as well as blocked air ducts and vents within the HVAC system. Restricted air movement prevents proper airflow to reach all areas of your space, causing temperature disparities. To address inadequate airflow, it’s crucial to regularly clean or replace air filters and ensure air ducts and vents are free from obstructions. By promoting proper airflow, you’ll achieve consistent and comfortable temperatures throughout your property.

9. Water Leaks

Water leaks around your indoor AC unit should never be ignored, as they can indicate underlying issues. Leaks may result from a malfunctioning condensate drain line or the need for cleaning and flushing the evaporator coils with antifungal agents. Water leaks can lead to water damage, mold growth, and potential structural issues if left unaddressed. If you notice condensation or water near your HVAC unit, it’s essential to call a professional technician. They will diagnose and repair the issue, ensuring that your HVAC system operates efficiently and without any water-related complications.

10. Pilot Problems

Ignition issues can stem from various factors when it comes to furnaces. Dirty pilots, flame sensors, or burners can cause pilot failures, short cycling, furnace lockouts, or delayed burner ignition. These issues may require replacing the hot surface ignitor or thermocouple due to wear and tear, or they could result from gas supply problems. Given the potentially dangerous nature of working with high voltage and natural gas, it’s advisable to have a skilled service specialist handle pilot problems. They possess the necessary expertise to safely address these issues, ensuring your furnace operates reliably and without any safety concerns.

Call C-U Trade Services Today!

If your furnace or air conditioning system is not functioning correctly, it could be caused by any of the following factors: your thermostat, air filters, drain lines, refrigerant levels, fan motor, or compressor. Before seeking professional help, it’s important to check these components for any signs of problems. If you have done so and still can’t get your HVAC system working, don’t worry. The team at C-U Trade Services is here to help. Our experts have extensive knowledge and experience in the heating and cooling industry and are ready to assist you in getting your home back to a comfortable temperature. So why wait? Give us a call today and let us help you resolve any issues you’re facing with your HVAC system.


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Champaign, IL 61822


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