Evaporator coil replacement cost
Replacing an AC evaporator coil costs $1,000 to $2,500 when the coil is under warranty (you pay labor and refrigerant) and $2,500 to $4,500 or more out of warranty. It's one of the most expensive AC repairs.
Quick answer
$2,500 – $4,500out of warranty, parts and labor
Out of warranty, a new evaporator coil costs $2,500 to $4,500. Under warranty, expect $1,000 to $2,500. Large 5-ton systems can top $4,500.
Cost by AC size
| AC size | Parts and labor |
|---|---|
| 1.5 – 2 tons | $1,000 – $2,000 |
| 2.5 tons | $1,500 – $2,500 |
| 3 tons | $1,800 – $3,000 |
| 3.5 tons | $2,000 – $3,500 |
| 4 tons | $2,300 – $4,000 |
| 5 tons | $2,800 – $4,500+ |
Signs of a bad evaporator coil
- Warm air from vents and an AC that runs constantly
- Refrigerant needs topping up every season (a slow coil leak)
- Ice on the indoor coil or refrigerant lines
- Hissing or bubbling sounds near the indoor unit
Before replacing, a leak test ($100 to $330) should confirm the coil is the source; see AC refrigerant leak repair cost.
Coil or new AC?
On a system over 10 years old, the cost of a coil plus a recharge is often 40% to 60% of a new AC. Many owners choose a full replacement instead, especially for R-22 systems. Keeping the coil clean ($100 to $400) and the filter changed helps prevent corrosion and freezing.
How to get a fair quote
- Get at least three written quotes that list the brand, model number, size (tons or BTU) and efficiency rating.
- Ask whether the price includes permits, removal of the old unit, refrigerant, a new thermostat and any duct or electrical work.
- Ask for a load calculation (Manual J) instead of matching the old unit's size by default.
- Compare labor warranties (1 to 10 years) as well as the manufacturer's parts warranty, and register the equipment.
- Schedule non-urgent work in spring or fall, when contractors are less busy and more willing to discount.
Frequently asked questions
How much does it cost to replace an evaporator coil?
About $2,500 to $4,500 out of warranty, or $1,000 to $2,500 when the coil is covered by warranty.
Can an evaporator coil be repaired?
Small leaks are sometimes repaired or sealed, but these fixes are often temporary. Replacement is the reliable fix.
How long does evaporator coil replacement take?
Usually 4 to 8 hours.
Sources
Prices are national averages and typical ranges from published cost data. Your price depends on your home, region, equipment and contractor, so get several written quotes. Heat & Air Costs is not an HVAC contractor; read our disclaimer.