A well-performing HVAC system is critical to keeping your home comfortable, particularly when weather conditions become extreme. Nevertheless, just as any mechanical system, your HVAC system can also develop problems along the way. Knowing basic HVAC issues and how to correct them will enable you to keep your home comfortable while avoiding expensive repairs in the future. Let’s examine some of the most common HVAC issues, what impact they have on your system, and how you can resolve them.
Table of Contents
Problem:
Clogged or dirty air filters are one of the most frequent causes of HVAC issues. Over time, dust, dirt, and debris accumulate on the filter, restricting airflow. This forces your system to work harder, leading to increased energy consumption and poor air quality. A clogged filter can even cause the system to overheat and fail.
Solution:
Replace your air filters monthly, and replace them at least every three months. If you have allergies or pets, it’s a good idea to change them more often. Cleaned filters enhance airflow, increase efficiency, and increase the lifespan of your HVAC system.
Problem:
Thermostat issues may result in inconsistent heating or cooling, or your system failing to come on altogether. This may be caused by dead batteries, improper settings, or just a unit that is outdated.
Solution:
Start by replacing the batteries if your thermostat uses them. Then, ensure the thermostat is set to the correct mode (heat or cool) and temperature. If the thermostat still doesn’t function properly, upgrading to a programmable or smart thermostat might be the best solution for better control and energy efficiency.
Problem:
Your air-conditioning system uses refrigerant to chill the air. If your system has a leak in the refrigerant, it will not be able to cool properly, and you may notice ice buildup on coils or hear a gurgling noise.
Solution:
Refrigerant leaks are professional jobs. The HVAC technician will need to locate and seal the leak and then recharge the system with the proper refrigerant. It’s important to take care of refrigerant problems early on to prevent destroying your HVAC system.
Problem:
Your HVAC system’s evaporator coils collect heat from the air. If they freeze, they cannot perform their intended function, and this will result in reduced cooling capacity and energy wastage.
Solution:
If your coils do freeze, turn off your HVAC system so that they can thaw. Meanwhile, inspect dirty air filters and replace them if necessary. To avoid future freezing, have annual maintenance performed, during which a technician can clean your coils and see that all is well.
Problem:
The blower motor is used to circulate air around your house. When it quits, you may experience poor airflow or complete lack of air movement. The blower motor can quit due to a buildup of dust, electrical component failure, or faulty components.
Solution:
Clean out your air filter to determine if it’s clogged, since a dirty filter will overheat the blower motor. If the filter doesn’t look like it’s the culprit, check the circuit breaker to make sure the motor is getting power. If this still doesn’t resolve the problem, have a professional HVAC technician come in to diagnose and replace any damaged parts.
Problem:
Your HVAC unit has a drain line that transports moisture away. With time, dirt, mold, or algae may collect within it, clogging the drain line. A clogged line can cause water leaks that destroy your home and your HVAC unit.
Solution:
To prevent clogs, pour a cup of white vinegar or a bleach-and-water mixture down the drain line every few months. If the line is already clogged, use a wet/dry vacuum to clear it. If you’re unable to resolve the issue yourself, contact a professional HVAC service for help.
Problem:
Electric issues like malfunctioning wiring or a bad capacitor may not allow your HVAC system to work correctly. These problems may make the system switch on and off without warning or not start at all.
Solution:
Begin by verifying the circuit breaker to see if it has tripped. If the breaker is okay and your system still isn’t operating, the best course of action is to have a professional HVAC technician check the electrical aspects and perform any necessary repairs safely.
Problem:
If your HVAC system is producing unusual noises—banging, rattling, or squealing—it may be an indication of loose components, worn belts, or motor problems.
Solution:
Switch off your HVAC system and check for loose components or objects that could be creating the noise. If it is still problematic, have your HVAC system inspected by a technician to diagnose and repair the issue before it causes larger issues.
Problem:
If some rooms in your house are hotter or colder than others, it might be because of airflow issues, duct issues, or an incorrectly sized HVAC system.
Solution:
Ensure that all vents are free and not blocked. Inspect your ducts for leaks or damage. If the issue continues, have your ducts cleaned or hire a professional to determine if your system is appropriately sized for your house.
Issue:
When you have a gas furnace, the pilot light or ignition system is responsible for initiating the heating process. If these systems malfunction, your furnace will not heat and could possibly not turn on at all.
Solution:
For pilot light furnaces, check to see if it’s ignited. If it won’t continue to burn, there may be a problem with the thermocouple or gas line. In such an event, it would be best to call an HVAC technician to troubleshoot and fix the system properly.
Preventive maintenance is the best means of preventing HVAC issues. Checking filters, hiring a professional to inspect your system, and catching small issues early can all keep your HVAC system functioning well and efficiently. When you face an issue that’s outside your capability of doing it yourself, don’t hesitate to call a professional HVAC technician.
If you require professional HVAC service in your neighborhood, try contacting Old School Cooling. Their expert staff is at your service to assist with every aspect of your HVAC needs, from maintenance and repair to emergency situations, keeping your home comfortable throughout the year.
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