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When your HVAC unit stops working, it can leave your home uncomfortable and damp. But what type of things cause problems that require HVAC repair? Here is a list of the top causes that require HVAC services for your unit.

Common Causes of HVAC Unit Problems

• Dirty or clogged air filters. This is by far the most common and most preventable cause of HVAC breakdowns. Clogged or dirty filters make your system work harder to move the air, while at the same time allowing contaminants and allergens into your home’s indoor air, such as mold and pet dander. A few dollars and a couple minutes are all it takes to keep this part of your system operating properly.
• Malfunctioning, poorly placed or broken thermostat. Thermostat problems are the next most common cause of HVAC issues. A malfunctioning thermostat may power the system at the wrong temperatures while a broken one may not work at all. But what about placement? If your thermostat is next to a large appliance, drafty window or HVAC vent, it will run the HVAC unit based on temperatures in that location, which may not reflect your home’s needs.
• Leaking refrigerant. Refrigerant is what transfers heat into and out of your home, depending on whether you’re running the air conditioning or heating. Because it must operate in a pressurized system, leaks in the lines can cause it to operate poorly or not at all. If you’ve recently done any work around your lines, check to see whether they’ve been nicked or torn in the process.
• Wiring is faulty or breaker keeps tripping. Especially in an older home or one with recent work done, electrical issues are a big problem. Wiring issues can cause shorts that trip the breaker or otherwise damage your system.
• Dirty or frozen coils. Your coils require air flow to function properly, so they’ll freeze up if the air can’t move the cold away from the coils quickly enough. Dirty coils create an insulating barrier that keeps the heat exchange from taking place.

If your HVAC unit is having problems and you need to have air conditioning repair services, having a general idea of what may be malfunctioning helps the HVAC company get your unit repaired and functioning quicker. If you need HVAC services, please feel free to contact us today. We are ready to help you make your home comfortable again.