AC Repair Services › AC Evaporator Coil Replacement
AC Evaporator Coil Replacement in Garland, TX
The evaporator coil sits inside your air handler and is where refrigerant absorbs heat from the air moving through your home. When the coil develops a leak, refrigerant escapes and the system loses its ability to cool. Coil replacements are one of the more involved AC repairs — it requires refrigerant recovery, physical coil removal, and a proper recharge after the new coil is in place.
Garland AC Repair Pros provides AC evaporator coil replacement for homeowners across Garland, TX. Call for a free inspection and a written quote before any work begins.
When to Call
When You Need AC Evaporator Coil Replacement
- System blows air but the air isn't cold, and refrigerant is confirmed low
- Technician found a refrigerant leak traced to the indoor coil specifically
- You've had refrigerant added multiple times but the system keeps losing charge
- Coil is frozen repeatedly even after airflow issues have been ruled out
- You smell a faint musty or chemical odor from vents that correlates with cooling loss
- Your air handler is newer but the coil was flagged as mismatched with the outdoor unit
How It Works
Our Process for AC Evaporator Coil Replacement
- 1
Leak confirmation
We don't replace an evaporator coil on assumption. We use a leak detector to confirm the coil is the source before recommending replacement. Leaks are sometimes elsewhere.
- 2
Refrigerant recovery
We recover the remaining refrigerant from the system using recovery equipment before opening any refrigerant lines. This is required — it can't be vented.
- 3
Coil removal
We disconnect the refrigerant lines, drain line, and sometimes electrical connections at the air handler. Coil access varies significantly by air handler model and installation location.
- 4
New coil installation and line connection
We install the replacement coil, braze the refrigerant line connections, and pressure test the system with nitrogen before adding any refrigerant.
- 5
Evacuation and recharge
We pull a deep vacuum to remove moisture and air from the system, then recharge to the manufacturer's specified refrigerant weight for your equipment.
- 6
Performance verification
We measure supply and return air temperatures and check system pressures under load to confirm the new coil is transferring heat correctly before we leave.
What's included
- Leak detection to confirm the evaporator coil is the source before replacement
- Refrigerant recovery from the existing system before any lines are opened
- Replacement evaporator coil matched to your air handler and outdoor unit
- Brazed line connections, nitrogen pressure test, and full system evacuation
- Refrigerant recharge to manufacturer specifications for your system
- Post-installation temperature split and pressure verification
What's not included
- Refrigerant cost is typically itemized separately from coil and labor — volume needed varies by system size
- Air handler or drain pan replacement if the existing components are damaged or corroded
- Ductwork modifications if the new coil size differs from the original and requires fitting adjustments
Real Situations
Common Scenarios in Garland
A homeowner in the Timber Creek area had refrigerant added two summers in a row by different companies, but cooling performance kept declining.
We did a proper leak search rather than just adding refrigerant again. The leak was confirmed at the evaporator coil — a pinhole in the aluminum coil, likely from formicary corrosion. We replaced the coil, pressure tested, and recharged. We also discussed why the repeated top-offs without finding the leak had masked the problem.
A homeowner near Brand Road had a five-year-old system where the outdoor unit was replaced under a previous repair but the indoor coil was left in place from the original installation.
The mismatched coil was causing efficiency problems and putting strain on the compressor. We replaced the evaporator coil with one matched to the current outdoor unit, which resolved the pressure imbalance and improved cooling noticeably.
A Garland homeowner found standing water around their air handler and noticed the system wasn't cooling — the coil had been freezing and thawing repeatedly.
We tested for the underlying cause before recommending a coil replacement. In this case, low refrigerant from a coil leak was causing the freeze-up. We confirmed the leak location, replaced the coil, and addressed the drain line to prevent a recurrence of the overflow.
Garland Context
Why this matters in Garland
Garland has a high concentration of homes built between 1985 and 2005, and many of those original evaporator coils are now at or past their expected service life. The local water supply and high humidity levels contribute to formicary corrosion on aluminum coils — a specific type of coil failure common in North Texas that eats small pinholes through the coil material over time. It's not a defect, it's an environmental condition, and it's something we see regularly in this area.
Straight Talk
About pricing & scope
Evaporator coil replacement is one of the more expensive AC repairs because it involves parts, refrigerant, and significant labor. Cost depends on coil size, refrigerant type, system age, and access difficulty inside the air handler. Older systems using R-22 refrigerant complicate matters further — we'll explain what that means for your specific situation before any work begins.
What This Fixes
Problems We See in Garland
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