These Major A/C Parts Keep Your System Working Properly

 In System Repair

There are lots of parts that work together to make your air conditioner run properly. If any one of them works at less than its best, it can tax the whole system and cause the unit to fail. Here’s an air conditioner parts guide to help you understand the major parts that keep your home comfortable.

Blower Motor

The blower motor powers the fan that forces warm or cold air into your ductwork and out the vents throughout your home. Variable speed motors run at different speeds to precisely control the flow of air. They’re also quieter and help lower humidity in your home. Single-speed motors are generally less expensive, but they tend to be noisier and leave your home more humid. They may also burn more energy than variable speed motors. A louder-than-normal motor noise may indicate a problem. Shut off your heater or air conditioner and call a technician.

Evaporator Coil

The evaporator coil is an A-shaped piece of equipment made of small tubes and fins, usually located in your inside unit. Warm air comes from inside the home and blows over the evaporator coil, where the moisture and heat are drawn off as the air is cooled. The moisture drains away through the condenser pan; the warmth goes outside via the compressor and fan. Evaporator coils should be clean, as even a thin layer of dust can act as an insulator that makes the rest of the system work too hard. Any time you see frost on your evaporator coils or inside unit, you’ve got a problem that needs attention. Turn off your system and call a technician.

Condenser Coil

The condenser coil is the other half of the coil-cooling equation. It, along with the compressor and some other equipment, form the big metal box outside of your home or office. The refrigerant goes through a copper tube you’ve likely seen and out to the condenser coil, where it releases much of the heat from your home. The fan on top of the unit blows air over the condenser coil, releasing the heat into the air. Just like the evaporator coil, the condenser coil and its enclosing unit need good airflow to work properly. Yard debris should be cleared away regularly. If the condenser unit becomes frosty or icy outside of the onset of wintry weather, you’ve got a problem in your system. Turn it off and call a technician.


This is how the refrigerant gets back and forth between those coils. The compressor pressurizes the refrigerant and moves it, as a gas in one part of the process and as a liquid in another, through the system. Because it’s on the hot side of the air conditioner equation, it’s located outside in the metal box, along with the condenser coil. Problems with the compressor could show up as a shaking outside unit, odd noises, blowing warm air and tripping circuit breakers or blown fuses. If you notice any of these problems, it’s time to get a system check-up.

A regular service program is a great way to stay ahead of expensive repairs when one of the air conditioner parts in this guide break down. Join Barineau’s Total Comfort Service Program to get annual inspections, a discount on repairs, same-day service and more. Call 850.580.4029 now to get started.

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