How Much Does Evaporator Coil Replacement Cost in 2025?

Evaporator Coil Replacement Cost: What to Know

In 2025, the average cost to replace an evaporator coil is $1,500, with most projects ranging from $700 to $1,800 depending on coil size, refrigerant type, and labor. The evaporator coil is located inside or near your air handler or furnace. As refrigerant passes through the coil, it absorbs heat from the indoor air, allowing your AC system to deliver cool air back into your home. Because this part handles the refrigerant that cools your air, a faulty coil can dramatically affect your comfort and efficiency.

Cost by Coil Type

The type of evaporator coil you need depends on your existing HVAC configuration. Below is a breakdown of typical evaporator coil costs by style:

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Prices reflect market averages across common residential systems. Manufacturer list prices may vary.

Cost by Unit Size

Evaporator coil cost rises with your HVAC unit’s size (measured in tons). Larger homes typically require larger systems with higher-capacity coils:

Cost by Unit Type

The type of HVAC system you have also affects evaporator coil pricing. Here’s how it breaks down:

• Central Air Conditioners: $1,200 to $1,800
  Most common setup in U.S. homes, with standard coil sizing.
• Heat Pumps: $1,400 to $2,800
  Typically requires coils compatible with heating and cooling modes.
• Ductless Mini-Splits: $700 to $1,600
  Smaller coils, often replaced as part of the indoor air handler unit.
• Packaged Units: $1,600 to $3,000+
  Replacement is more complex due to compact housing.

Labor Cost

Professional labor for evaporator coil replacement typically ranges from $75 to $150 per hour, time required for the service can depend on system complexity and location of the coil (e.g., attic vs. garage). Costs include:

• Refrigerant removal and recharge
• Electrical reconnection
• Brazing copper lines and pressure testing
• System diagnostics and calibration

Labor makes up a significant portion of the total price, especially for hard-to-access units or those using legacy refrigerants like R-22.

Factors That Affect Evaporator Coil Replacement Costs

• Refrigerant Type: R-22 systems are more expensive to service or retrofit than newer R-410A systems.
• Coil Accessibility: Attic or tight crawl space installs require more time and equipment.
• System Size: Larger HVAC units need more expensive coils.
• Warranty Coverage: Parts may be covered by manufacturer warranty, but labor usually isn’t.
• Add-Ons: Replacing refrigerant lines or adding a TXV (thermostatic expansion valve) can add $100 to $400.

Evaporator Coil Cost by Brand

Some manufacturers publish general coil prices, but for many, costs vary by model and dealer. Below is a benchmark guide based on industry averages:

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These estimates assume installation by a licensed HVAC contractor. Many brands offer 5 to 10 year parts warranties, but labor coverage varies by plan.

How to Know It’s Time to Replace Your Evaporator Coil

Evaporator coils typically last 10 to 15 years, but replacement may be needed sooner if issues arise:

• Persistent Refrigerant Leaks: Coil corrosion can cause tiny pinholes that leak refrigerant, often too small to patch reliably.
• Frozen Coils: Poor airflow, refrigerant issues, or internal clogs can cause repeated icing.
• Reduced Cooling Performance: If your system runs longer but cools less, a coil failure might be the cause.
• Rust or Mold: Excess moisture or poor drainage can damage the coil surface.
• System Age: If your unit is over 10 to 12 years old and other parts are failing, it may be time to consider full replacement.

If your coil failure is part of a larger issue (like compressor failure), replacing the entire HVAC system may offer better long-term value.

Frequently Asked Questions

Can I replace an evaporator coil myself?

Evaporator coil replacement requires refrigerant handling, copper welding, and precise diagnostics, making it a job for licensed HVAC professionals. DIY attempts can void warranties, lead to improper installation, or pose safety risks. Always hire a certified contractor.

Is it worth replacing an evaporator coil?

Yes. If your HVAC unit is under 10 years old and otherwise in good condition, replacing the coil can extend its life by several more years. But if your system is nearing the end of its lifespan, full replacement might be more cost-effective.

Is it cheaper to replace an evaporator coil or the whole unit?

Replacing the coil is cheaper upfront, but if your HVAC system is old, inefficient, or has other issues (e.g., compressor problems), upgrading the whole unit can save more in the long run through energy efficiency and fewer repairs.

How to Save on Evaporator Coil Replacement Costs

• Check warranty coverage: Some manufacturers cover coil parts for 5–10 years.
• Schedule offseason service: Spring or fall appointments may come with discounts.
• Request multiple quotes: Compare at least 3–4 licensed HVAC pros.
• Ask about rebates: Local utilities may offer rebates for energy-efficient HVAC repairs.
• Finance repairs: Many contractors offer financing for larger repairs.

Need help finding a trusted HVAC professional? Modernize can match you with pre-vetted local installers who offer fair pricing, quality work, and strong warranties.

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