Top Reasons AC Units Break Down in the Summer—and How to Prevent It
Summer in McLeansville, NC brings sweltering heat, and the last thing any homeowner wants is an air conditioner that stops working when it’s needed most. At Carolina Quality Heating & AC, we often get called out during peak season to deal with emergency AC breakdowns—and many of them could have been prevented. Below, we’ve outlined the most common reasons AC units fail in the summer and how you can avoid them with a little proactive maintenance and care.
1. Dirty or Clogged Air Filters
A clogged air filter restricts airflow, making your system work harder and eventually leading to overheating or component failure. In fact, dirty filters are one of the most common (and easily preventable) causes of breakdowns.
Prevention Tip: Check and replace your air filter every 1–3 months during the summer months. This simple task can improve performance and extend your system’s lifespan.
2. Low Refrigerant Levels
Your AC relies on refrigerant to cool the air. If the system is low due to a leak or improper installation, it won’t be able to keep up with demand—and that can quickly lead to a breakdown.
Prevention Tip: Schedule annual maintenance with a trusted HVAC professional (like us!) to check refrigerant levels and detect leaks early.
3. Electrical Failures
Capacitors, contactors, and other electrical components can wear out over time or be damaged by power surges. In the heat of summer, these failures are more likely as your system runs longer and more often.
Prevention Tip: Preventative maintenance allows technicians to test and replace worn-out electrical parts before they fail unexpectedly.
4. Frozen Evaporator Coils
If you notice ice buildup on your indoor unit, that’s a sign of frozen evaporator coils. This can be caused by poor airflow, dirty coils, or refrigerant issues—and can result in complete system shutdown if ignored.
Prevention Tip: Keep vents unblocked, replace filters regularly, and schedule coil cleanings during routine tune-ups.
5. Neglected Maintenance
Skipping regular service may save money in the short term, but it often leads to expensive repairs and discomfort down the road. Many breakdowns stem from issues that could have been caught during a simple inspection.
Prevention Tip: Schedule a professional AC tune-up in early spring or before summer kicks into full gear. Our team at Carolina Quality Heating & AC offers thorough inspections and affordable maintenance plans to keep your system running smoothly.
Stay Cool and Avoid Unexpected Repairs
At Carolina Quality Heating & AC, we’re here to help you enjoy a worry-free summer. Whether you need a quick repair, routine maintenance, or a brand-new system installed, our experienced team is just a call away. Don’t wait for a breakdown—contact us today to schedule your summer AC maintenance in McLeansville, NC!
📞 Call us now or book your service online to keep your cooling system in top shape.









