How Much Does Evaporator Coil Replacement Cost in Los Banos, CA? (2026)

Average Cost

$1,351–$2,843

Materials

$745–$1,745

Labor (San Joaquin Valley)

$294–$442

Labor rates in San Joaquin Valley are -8% compared to Sacramento Metro baseline.

An evaporator coil replacement involves recovering refrigerant from the system, removing the old coil from the furnace or air handler plenum, installing a new matched evaporator coil, reconnecting refrigerant lines, replacing the filter drier, evacuating the system, recharging with the correct refrigerant amount, and testing system performance. Evaporator coils commonly fail from corrosion (especially in formaldehyde-laden air from new homes), manufacturing defects, or normal wear after 10-15 years.

Sacramento's long, hot cooling season means your evaporator coil works hard from May through October. A failing coil causes the system to lose cooling capacity right when you need it most during 100 °F+ heat waves.

Los Banos is located in Merced County (San Joaquin Valley). Growing agricultural city with newer affordable subdivisions. The local utility provider is PG&E.

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City

Coils

Materials Included

Evaporator coil (matched to condenser)1 each

$500–$1,200

R-410A refrigerant (system charge)6 lb

$150–$300

Filter drier (liquid line)1 each

$15–$40

Thermostatic expansion valve (TXV)1 each

$60–$150

Condensate drain pan1 each

$20–$55

Labor(San Joaquin Valley -8%)

HVAC technician (EPA 608 certified)4h @ $74–$110/hr

$294–$442

Contractor Markup30%

0%Avg 30%100%

Materials

$745–$1,745

Labor

$294–$442

Markup

$312–$656

Estimated Total Cost

$1,351 – $2,843

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California Building Code

California requires EPA 608 certification for any technician handling refrigerants. Refrigerant recovery is mandatory before coil removal. HERS verification may be required if ductwork is modified during the replacement.

Project Timeline

Refrigerant recovery & preparation

30-60 minutes

Recover existing refrigerant into an approved recovery tank, disconnect the refrigerant lines, and remove the access panels from the furnace or air handler plenum.

Old coil removal & new coil installation

2-3 hours

Remove the old evaporator coil from the plenum, clean the drain pan area, set the new coil in place, and braze the refrigerant line connections.

TXV, filter drier & reassembly

30-60 minutes

Install the new TXV and filter drier, reconnect the condensate drain, and reinstall access panels and insulation.

Evacuation, charge & testing

45-90 minutes

Evacuate the system with a vacuum pump to remove moisture, weigh in the correct refrigerant charge, verify subcooling and superheat readings, and test system performance.

Materials Breakdown

Material	Qty	Unit	Unit Cost	Total
Evaporator coil (matched to condenser)	1	each	$500–$1200	$500–$1,200
R-410A refrigerant (system charge)	6	lb	$25–$50	$150–$300
Filter drier (liquid line)	1	each	$15–$40	$15–$40
Thermostatic expansion valve (TXV)	1	each	$60–$150	$60–$150
Condensate drain pan	1	each	$20–$55	$20–$55

Evaporator Coil Replacement in Los Banos — FAQ

How long does an evaporator coil last?+

Evaporator coils typically last 10-20 years. In Sacramento, where AC systems run heavily for 5-6 months, coils may wear toward the lower end. Coil failure is often indicated by refrigerant leaks that keep recurring after recharges.

Can I replace just the coil or do I need a full system?+

If your condenser is less than 8-10 years old and still in good condition, replacing just the evaporator coil is cost-effective. However, the new coil must match your condenser. If the condenser is also aging, a full system replacement may offer better long-term value.

Is the evaporator coil covered under warranty?+

Most manufacturers offer 5-10 year coil warranties (some offer limited lifetime). However, the warranty typically covers only the part — not labor. Registration within 60-90 days of installation is usually required for the full warranty term.