Jacksonville, FL
Evaporator coil replacement for Jacksonville AC systems
Leaking or corroded indoor coils replaced with a coil matched to your outdoor unit, so the system keeps its rated efficiency and runs as designed.
Quick answer
When does an evaporator coil need replacing in Jacksonville, FL?
An evaporator coil in Jacksonville needs replacing when it leaks refrigerant from scattered corrosion that can't be reliably patched, which is common in humid climates. The new coil should be matched to the outdoor unit so the system keeps its AHRI rating, which also matters for JEA rebate eligibility on new systems.
Overview
Why coils leak, and why matching matters
Indoor coils in humid climates develop tiny pinhole leaks from corrosion, often spread across the coil rather than in one spot. A single accessible leak can sometimes be repaired. Scattered leaks usually mean the coil will keep leaking, and replacement is the honest fix.
The replacement has to match the outdoor unit. A mismatched coil can lower the system's real efficiency and capacity, and it can change how the refrigerant charge should be set. We confirm the match against the manufacturer's ratings, install the coil, then pressure test, evacuate and charge to specification.
Cost factors
What affects the cost of a coil replacement
- Coil size and typeTonnage and cased or uncased design.
- MatchingThe correct matched coil for your outdoor unit.
- RefrigerantRecovery and a full recharge.
- AccessAttic and tight closet installs take longer.
- System ageOn older systems, a full replacement may be better value.
We price the coil replacement in writing, with a full system price alongside on older units.
Options
Repair the leak, replace the coil, or replace the system
| Option | When it fits | Consideration |
|---|---|---|
| Leak repair | Single accessible leak | Coil may leak elsewhere later |
| Coil replacement | Scattered leaks, newer outdoor unit | Must match the outdoor unit |
| Full system replacement | Older system or failing outdoor unit | New matched system, rebate eligible |
| Coil + coastal condenser | Coastal home with two corroded coils | Coastal grade outdoor unit |
| Sealant | Not recommended | Can clog valves, rarely holds |
We show you where the leak is before recommending any of these.
What is included
Every coil replacement includes
- Leak confirmed at the coil
- Matched coil verified against the outdoor unit
- Refrigerant recovered
- New coil installed and sealed to the cabinet
- Brazed with nitrogen flowing
- Pressure test and deep vacuum
- Charge set by superheat or subcooling
- Drain pan and line checked
What we fix
Leaking coil
When a system keeps losing refrigerant and the leak is traced to the indoor coil, we look at where and how widespread the corrosion is. One accessible pinhole can be repaired; a coil with leaks across it can't be trusted. Replacing it means recovering the refrigerant, removing the old coil, installing the new one, brazing the connections with nitrogen flowing, pressure testing, pulling a deep vacuum and recharging to the manufacturer's specification. The old coil is removed and disposed of properly.
Matched coil for SEER2
Every outdoor unit is rated with specific indoor coils. Pairing it with the right coil keeps the system's SEER2 rating and capacity where they should be. We check the AHRI match before ordering, and we'll tell you when a system is old enough that replacing only the coil doesn't make sense, since a new coil on a failing outdoor unit may not be worth the cost. In that case we price a full matched system alongside. Nothing is ordered until you've seen both prices.
Cased versus uncased coil
A cased coil comes in its own cabinet and sits on top of a furnace or in a dedicated space; an uncased coil slides into an existing air handler or plenum. Which one you need depends on the existing setup. Getting it right avoids air leaks around the coil, which waste cooling and let dust coat the coil faster. We measure the space and match the coil type to it before ordering. The coil is sealed to the cabinet so air can't bypass it.
Brands we service and install
Trane, Carrier, Lennox, Rheem, Goodman, Daikin, Mitsubishi Electric, American Standard, Bryant, Ruud, Amana, Honeywell, York, Heil
Coil replacements and JEA's matching rules
JEA's rebate on new systems depends on the matched rating shown on the AHRI certificate, and replacements need to reach at least 16 SEER2. That same logic applies to any coil replacement: a coil that doesn't match the outdoor unit lowers real efficiency even when nobody is filing a rebate. It's also why, on an older system, we sometimes recommend a complete matched replacement that qualifies for JEA's $200 rebate instead of a coil alone.
How the job runs
How a coil replacement runs
- 1
Confirm
Leak located and coil condition assessed.
- 2
Written price
Coil and, on older systems, full replacement priced.
- 3
Order
Matched coil confirmed and ordered.
- 4
Install
Refrigerant recovered, coil replaced, connections brazed.
- 5
Test and charge
Pressure test, vacuum and charge to spec.
FAQ
Coil replacement questions
Can an evaporator coil be repaired?
A single accessible leak sometimes can. Scattered corrosion usually means replacement.
Does the new coil have to match?
Yes, to keep the system's rated efficiency and capacity.
How long does a coil replacement take?
Usually a day once the matched coil is in hand.
Should I replace the whole system instead?
On older systems, often. We price both.
Why do coils leak in Florida?
Humid conditions contribute to corrosion that creates pinhole leaks.
Will a coil replacement qualify for a JEA rebate?
JEA's rebate applies to qualifying new systems, not a coil alone.
Which coil brands do you replace?
Trane, Carrier, Lennox, Goodman, Rheem, Daikin and others.
Related services
Other work on the same system
AC Replacement
Change-outs sized with a load calculation, permitted, and filed for the JEA rebate.
Learn moreAC Installation
New systems for additions, new construction and older homes getting central air for the first time.
Learn moreDuctless Mini Split Installation
Single and multi-zone heads for bonus rooms, garages and homes with no room for ducts.
Learn moreDuctless Mini Split Repair
Error codes, dripping heads and weak cooling on mini split systems.
Learn moreStop the leak for good
Call any hour. We'll find the leak and price the right fix in writing.