How To Replace Air Conditioning Evaporator Core

The air conditioning evaporator core is essential to the proper functioning of the air conditioning and heating system in your car.

These should be routinely checked, maintained and replaced to prevent engine overheating and to provide a comfortable ride.

How to Replace Air Conditioning Evaporator Core

Discharge air conditioning pressure into an EPA-approved recovery or recycling unit

Discharge the air conditioning pressure into an EPA-approved recovery or recycling unit. This can be done at most auto repair shops, dealer service departments or air conditioning repair facilities. Don't attempt this task yourself.

Remove heater or air conditioning unit from underneath dash

Remove the heater or air conditioning unit from underneath the dash. In most vehicles, this is located under the instrument panel, or cluster. Turn the unit upside-down and locate the retaining screws that hold together the two halves of the unit. Place these screws in a safe place, such as a magnetic tray, to avoid losing them.

Take out center adapter duct to find last retaining screw and remove that screw as well

Take out the center adapter duct to find the last retaining screw and remove that screw as well.

Turn the system back over and remove the upper half of the housing.

Perform this over a work bench in case you drop the screws or find broken pieces inside.

Lift the evaporator from the lower housing.

Inspect the housing to make sure there is no damage, excessive wear, cracking or missing clips or pieces.

Install the new evaporator core by reversing the preceding steps.

Check pieces for damage or excessive wear and replace them.

Lift the evaporator from the lower housing.

Inspect the housing to make sure there is no damage, excessive wear, cracking or missing clips or pieces.

Install the new evaporator core by reversing the preceding steps.

Check pieces for damage or excessive wear and replace them.