AC Repair Services › AC Evaporator Coil Replacement
AC Evaporator Coil Replacement in Portland, ME
The evaporator coil sits inside your air handler and absorbs heat from indoor air as refrigerant passes through it. When the coil develops leaks or heavy corrosion, the system loses refrigerant and cooling drops off. Replacing it restores the system's ability to hold a charge. It's an involved job because the coil is buried inside the air handler cabinet and the refrigerant circuit has to be fully opened.
Portland AC Repair Pros provides AC evaporator coil replacement for homeowners across Portland, ME. Call for a free inspection and a written quote before any work begins.
When to Call
When You Need AC Evaporator Coil Replacement
- You've recharged refrigerant twice in three years and the tech found the leak inside the air handler.
- Your air handler is dripping water from the secondary drain pan, pointing to a frozen and thawing coil.
- UV dye testing confirmed refrigerant is leaking from the evaporator coil, not the outdoor unit.
- A musty smell from the vents has been traced to coil corrosion and surface deterioration inside the cabinet.
How It Works
Our Process for AC Evaporator Coil Replacement
- 1
Access and Inspection
We open the air handler cabinet and inspect the coil directly — checking the extent of corrosion and leak location before ordering parts.
- 2
Refrigerant Recovery
We recover all refrigerant from the system before opening the refrigerant lines — required by EPA regulations, not optional.
- 3
Coil Swap
We remove the old coil, install the matched replacement, reseal all connections, and check drain pan alignment and condensate flow.
- 4
System Restoration
We evacuate the line set and new coil, recharge to spec, and confirm supply air temperature is hitting the correct range.
Portland Context
Why this matters in Portland
Formicary corrosion — caused by organic acids in the air — is more common in older Portland homes with high interior humidity and older copper coils. It shows up as tiny pinholes that are impossible to patch reliably, making full coil replacement the only real fix.
Straight Talk
About pricing & scope
Coil cost varies by cabinet size, coil configuration, and brand. If the existing air handler cabinet is older or corroded around the coil pan, that can add scope. We'll show you what we find before proceeding.
What This Fixes
Problems We See in Portland
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