Back to Glossary


The evaporator coil works with the indoor unit, functioning with the air conditioner or heat pump to cool and condition indoor air that flows over it by drawing out heat and moisture.


The coil, also known as an evaporator coil or an indoor coil, is the unsung hero of any home heating or cooling system. Its job, heat transfer, is one of the most important factors in achieving heating and cooling efficiencies that keep your home comfortable all year long.


An evaporator coil is located indoors and is either installed with your furnace or as part of your air handler. Inside the coil, the refrigerant evaporates as it absorbs heat from the indoor air that passes over it. The coil essentially serves as a “heat exchanger,” working with your heating system in the winter and your cooling system in the summer.


Each Trane All-Aluminum Comfort™ Coil is designed to provide your family with outstanding comfort all year round.At Trane, we strive to bring you the highest quality and performance through innovative technology and precision engineering. So when you choose the right comfort coil perfectly matched for your Trane system, you can be sure you’ll enjoy the benefits of the best home comfort system money can buy.

Like all of the components in our high-quality home comfort systems, each coil goes through rigorous testing to guarantee the greatest durability and protection against refrigerant leaks. We test each coil with pressurized helium to 325 pounds per square inch. This allows us to detect a leak as small as .10 ounces per year. A small amount, we know, but because any leak will lower your system’s efficiency, any leak is unacceptable. Durability means your home will be comfortable now and for years to come.


A dirty indoor coil lowers the efficiency and performance of your total system. To keep your system operating at design performance, have your coil cleaned regularly. Indoor coils are often dirty because they’re usually so difficult to access. But Trane Comfort™ coils are designed to slide out on the integrated rail system for easy cleaning. Because the insulation is encased the cabinet can be wiped down, making the job much easier for your dealer, and a clean coil will yield higher performance and cleaner air in your home.

Explore Trane Residential Products

View all products
All Products
Top of Page