Central air conditioners have two parts: an indoor unit that sits in an attic or other unfinished space, and an outdoor unit that sits on a concrete slab. The indoor unit houses a critical component called an evaporator coil, while the outdoor unit houses two critical components: a compressor and a condenser coil. If you have an older air conditioner, there’s a pretty good chance that the outdoor unit will fail before the indoor unit. You might think that a simple replacement of the outdoor unit will return your AC to good working order. In reality, partial replacement of the components in an older air conditioner can lead to significant, expensive problems. Understanding Your Air Conditioner When you turn on your central air conditioner, the system pulls warm air from the interior of your home to the evaporator coil in the indoor unit. This coil contains a refrigerant in gas form. The heat in the […]