
AC Compressor 101: What It Is, Why It Fails, and How to Fix It
Your air conditioner relies on the compressor to cool your home. This internal component helps move refrigerant through the system to transport heat outside. While compressors often last between 10 to 15 years, some factors can cause early failure or malfunction. In this article, we’ll explain how a compressor works, the reasons it may fail, and what to do if it stops working. AC Compressor 101: How Does it Work? The compressor is an essential part of the system, allowing the AC to cool a space effectively. It compresses refrigerant and helps move it through the system to absorb and release heat from the air. The compressor begins by squeezing the refrigerant and pushing it through the condenser coils to release heat into the outside air. The refrigerant then moves through the expansion valve, losing pressure and absorbing heat from the hot indoor air. Why Do AC Compressors Fail? While most compressors will fail after 12 to 15 years, some factors can result in early failure. Some culprits that signal your AC compressor is not working include: Refrigerant issues: Low or leaking refrigerant causes the compressor to work harder, causing it to get too hot and eventually fail. Electrical problems:




