Every HVAC system has its quirks, and over time, even the most reliable ones will encounter problems. Here are five of the most common HVAC problems we come across:
1. Bad Capacitor
Why it’s a problem: Capacitors power critical components like the compressor, blower, and fan motors. When they fail, your system may struggle to start—or not work at all.
Signs:
A humming sound when the system tries to start.
The outdoor fan not spinning, even though the unit is running.
2. Clogged Drainage Line
Why it’s a problem: Your AC creates condensation that should drain outside. When the line gets clogged, water can back up into your system or overflow, potentially causing water damage or mold growth.
Signs:
Damp spots or stains around vents.
You system stopped working and the drainage pan is full of water
3. Dirty Flame Sensor
Why it’s a problem: The flame sensor in your furnace is a safety feature that shuts off the gas valve if the burner doesn’t ignite. Over time, it can get dirty and stop functioning properly, causing your furnace to shut down prematurely—or fail to heat your home.
Signs:
Furnace turns on briefly and then shuts off.
4. Low Refrigerant
Why it’s a problem: Refrigerant is essential for cooling. Low levels often indicate a leak, which not only reduces efficiency but can also damage your compressor if left untreated.
Signs:
Warm air blowing from vents.
Ice buildup on refrigerant lines or the outdoor unit.
5. Low Airflow to System
Why it’s a problem: Restricted airflow puts extra strain on your system, leading to uneven temperatures, higher energy bills, and premature wear on components. If you have any of these signs, you should check your filter. If it's dirty, replacing it might solve your problem!
Signs:
Weak airflow from vents.
Certain rooms are too hot or too cold.
Recognizing these common HVAC problems is the first step to maintaining a comfortable and efficient home. Whether it’s a bad capacitor or low refrigerant, addressing issues early can help prevent bigger problems down the road.
