Evaporator Coil Replacement Cost: Prices and Factors (2026)
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💰 Cost Breakdown
| Item | Low | Average | High |
|---|---|---|---|
| Evaporator Coil (2–3 ton, uncased) Bare coil for smaller residential systems. Uncased coils fit inside an existing air handler cabinet. Standard replacement for most 2–3 ton central AC systems. | $400 | $700 | $1,000 |
| Evaporator Coil (3.5–5 ton, uncased) Larger coil for homes over 2,000 sq ft. Higher capacity coils use more copper or aluminum and cost more. Must match the outdoor unit's tonnage exactly. | $600 | $1,000 | $1,500 |
| Cased Evaporator Coil Coil that comes in its own insulated cabinet. Required when the existing cabinet is damaged, corroded, or the wrong size. Easier to install but costs more than uncased. | $700 | $1,200 | $1,800 |
| Labor (coil replacement) Includes removing the old coil, cleaning the cabinet, installing the new coil, brazing connections, pulling a vacuum, recharging refrigerant, and testing. Typically 3–5 hours of work. | $400 | $700 | $1,100 |
| Refrigerant Recharge (with coil swap) New coil requires a full system recharge. R-410A is standard for systems made after 2010. Older R-22 systems cost significantly more per pound of refrigerant. | $150 | $350 | $700 |
| TXV Valve Replacement (if needed) The thermostatic expansion valve is often replaced alongside the coil. Some manufacturers require a new TXV to maintain warranty coverage on the new coil. | $150 | $300 | $500 |
Evaporator Coil (2–3 ton, uncased)
Bare coil for smaller residential systems. Uncased coils fit inside an existing air handler cabinet. Standard replacement for most 2–3 ton central AC systems.
Evaporator Coil (3.5–5 ton, uncased)
Larger coil for homes over 2,000 sq ft. Higher capacity coils use more copper or aluminum and cost more. Must match the outdoor unit's tonnage exactly.
Cased Evaporator Coil
Coil that comes in its own insulated cabinet. Required when the existing cabinet is damaged, corroded, or the wrong size. Easier to install but costs more than uncased.
Labor (coil replacement)
Includes removing the old coil, cleaning the cabinet, installing the new coil, brazing connections, pulling a vacuum, recharging refrigerant, and testing. Typically 3–5 hours of work.
Refrigerant Recharge (with coil swap)
New coil requires a full system recharge. R-410A is standard for systems made after 2010. Older R-22 systems cost significantly more per pound of refrigerant.
TXV Valve Replacement (if needed)
The thermostatic expansion valve is often replaced alongside the coil. Some manufacturers require a new TXV to maintain warranty coverage on the new coil.
📊 Factors That Impact Cost
System Size (Tonnage)
High ImpactCoils are sized to match your outdoor unit. A 2-ton coil costs $400–$700 for the part alone; a 5-ton coil costs $800–$1,500. The coil must match your condenser tonnage exactly for proper operation.
Coil Material
Medium ImpactMost modern coils use aluminum fins with copper tubes. All-aluminum coils are cheaper but more prone to formicary corrosion in humid climates. Coated coils (anti-corrosion treatment) add $100–$300 but last longer in coastal or high-humidity areas.
Cased vs. Uncased
Medium ImpactUncased coils ($400–$1,000) slide into your existing air handler cabinet. Cased coils ($700–$1,800) include their own insulated housing and are necessary when the existing cabinet is damaged or mismatched.
Refrigerant Type
High ImpactR-410A recharges cost $150–$400. R-22 recharges cost $500–$1,500 due to the phaseout. If your system uses R-22, the combined cost of the coil plus refrigerant often makes full system replacement the better financial decision.
Warranty Status
High ImpactMany manufacturers offer 5–10 year coil warranties. If covered, you pay only labor and refrigerant ($500–$1,200 total). Check your registration status — unregistered systems often get only a 5-year warranty instead of 10.
Accessibility
Medium ImpactCoils in tight attic spaces, crawlspaces, or horizontal air handlers take longer to replace. Difficult access can add $200–$500 in extra labor. Upflow configurations in basements are generally the easiest to service.
💡 Money-Saving Tips
Check your warranty before paying for the coil
Evaporator coil leaks are common within the first 5–10 years. If your system was registered with the manufacturer, the coil may still be under warranty. You would pay only labor and refrigerant, saving $400–$1,500 on the part.
Get multiple quotes with itemized breakdowns
Coil replacement prices vary significantly between contractors. Request at least three written quotes that separately list the coil cost, refrigerant, labor, and any additional parts like a TXV valve.
Ask about aftermarket coils
OEM coils from brand-name manufacturers carry a premium. Aftermarket coils from companies like Goodman, Aspen, or MrCool often fit the same systems at 20–40% less cost with comparable quality.
Consider a full air handler if the coil keeps failing
If this is your second coil replacement, the air handler cabinet may have corrosion or airflow issues causing premature coil failure. A new air handler ($1,500–$3,500 installed) includes a fresh coil and eliminates the underlying problem.