Cooling

Evaporator Coil

The indoor coil in your AC or heat pump system where refrigerant absorbs heat from your home's air, cooling it before it's distributed through the ductwork.

What Is a Evaporator Coil?


The evaporator coil sits inside your air handler or furnace, typically in an A-frame or slab configuration. Cold liquid refrigerant flows through the coil while your blower pushes warm house air across it. The refrigerant absorbs the heat, cooling the air that continues into your ductwork. The coil also removes humidity from the air as moisture condenses on its cold surface. Over time, evaporator coils can develop ice buildup, refrigerant leaks, or become clogged with dirt — all of which reduce performance.

Why It Matters for Your Home

A dirty or frozen evaporator coil is one of the most common causes of AC performance problems. If you notice reduced airflow, warm air from your vents, or ice on your indoor unit, the evaporator coil is a likely culprit. Regular filter changes help keep the coil clean, but periodic professional cleaning is also important.

Suspect an evaporator coil issue? Call Trademark Tek at 541-500-0663 for expert troubleshooting.

Related Terms


➜ Condenser

➜ Refrigerant

➜ Air Filter

Quick Facts


Cooling

Also Known As

Evaporator Coil