Used A/C Evaporator

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The evaporator is one of the two (maybe three) heat exchangers in a mobile A/C system. It is usually made up of aluminum, and somehow similar with radiator, but unlike the radiators the passages in the evaporator carry moving refrigerant. The cold, low-pressure liquid refrigerant enters the evaporator whereas the warm air passes through the evaporator by action of the blower fan from the interior of the vehicle. Since the nature of facts says that heat always travels from a warmer area to a cooler area, so the cooler refrigerant flowing inside the evaporator’s absorbs heat from the warm air. At the same time, in the air condenses the humidity cools on evaporator’s surface, and then eventually it drips out of a drain tube to outside the vehicle. After the (now slightly warmer) refrigerant has completed its path through the evaporator, it takes its next destination towards the compressor.

In other words air conditioning does not actually cool the interior of the vehicle. But it does remove the heat and humidity from it.

However there are some industries which manufacture the best quality A/C Evaporator i.e American Standard, Lennox, Carrier, Trane, Amana, Luxaire, Fujitsu, etc.

The evaporator core, at some point additionally called an evaporator coil, is a warmth exchanger. Situated in or close to the vehicle’s dash, this part loads up with cold fluid refrigerant. As the blower engine blows air crosswise over it, the warmth from that air is consumed by the chilly refrigerant, and cold air enters the traveler compartment. The warm refrigerant leaves the evaporator core and is supplanted with cold refrigerant.

You’ve most likely seen water trickling under a vehicle when the cooling is turned on. That water is buildup caught on the evaporator from the warm air blowing crosswise over it, and is totally ordinary. The case that contains the evaporator core has a deplete tube for the water to dribble out.

Since dampness is expelled from the air, the cooling framework is an incredible dehumidifier. In this way, the A/C framework is presently part of the defrost framework. In most later model vehicles, the A/C blower turns on when the defrost is turned on. Cooling isn’t only for virus air; it’s really atmosphere control.

A few issues can create with evaporator cores in light of these wet-dry-wet-dry conditions. To start with, the dampness can make mold and mildew shape. Now and then this can make for some stinky air. There are items accessible to execute this mold and tidy up the smell, and are found at pretty much any vehicle parts store. Additional concerning, in any case, is that occasionally this mold can stop up the deplete tube. At the point when that occurs, water tops off the evaporator core case, and can deplete into the vehicle traveler compartment.

Since the evaporator core condition changes so radically, again with the wet-dry, breaks can create also. There is no genuine preventive measure one can take; it’s simply something that occurs.

A few specialists guarantee this is fake, others swear by it, and I do it since it can’t hurt. That is, I turn my A/C off before stopping, so the normal air blowing over the evaporator core can get it dry before it’s stopped for a few hours. That will take out the wet conditions required for mold and mildew to develop.

Trade time for an evaporator core can be long, so dependably make certain to purchase a substitution evaporator coil from a quality source. A low quality substitution evaporator can cost you more cash.

Find junkyards that may have your A/C evaporator in stock!

About Used A/C Evaporators

The A/C evaporator is the part inside the dash that actually makes the cold air, and a leak there is a common but labor-heavy repair. A used evaporator is an economical part for a job that is mostly about the labor.

What an A/C Evaporator Does

The A/C evaporator is a heat exchanger tucked inside the dashboard, in the HVAC housing. As cold refrigerant passes through it, the blower pushes cabin air across it, and the evaporator absorbs the heat and moisture from that air. The result is the cold, dehumidified air that comes out of your vents.

Signs Your A/C Evaporator Is Failing

A gradual or complete loss of cold air from a refrigerant leak
The smell of refrigerant, or oily residue, inside the vehicle
A musty odor from moisture and buildup on the evaporator
A system that will not hold a charge when the leak is at the evaporator

What to Check When Buying a Used A/C Evaporator

Inspect the core and fittings for damage and signs of leaking
Check the fins are not crushed or clogged
Confirm the tube connections match your system
Match the exact evaporator for your vehicle and refrigerant type

Common Applications

Every air-conditioned vehicle has an evaporator in the dash. Because it is buried deep in the HVAC housing, replacing it is labor-intensive, which is exactly why an affordable used core is attractive for the repair.

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Frequently Asked Questions

What does the A/C evaporator do?

It is where the cold is created. Cold refrigerant runs through it while the blower pushes cabin air across it, so it absorbs heat and moisture and sends cold, dry air to your vents.

Why is replacing an evaporator so expensive?

The part itself is not the costly part. The evaporator lives deep inside the dashboard's HVAC housing, so reaching it often means removing much of the dash. That labor is why a good used core saves real money.

How do I know the evaporator is leaking?

Cooling fades or disappears and the system will not hold a charge, sometimes with a refrigerant smell or oily residue inside the vehicle. Since it is sealed in the dash, a leak there is diagnosed by ruling out the more accessible parts.

Are A/C evaporators interchangeable?

Only the correct evaporator for your vehicle and refrigerant type will fit the HVAC housing and connect properly. Match it exactly to your application.