The evaporator is one of the two or three heat exchangers in a mobile AC 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 part.
The evaporator is located inside the dashboard where refrigerant reaches and, evaporator is changed from liquid form to gas. If the evaporator is punctured, the AC system will not operate properly or possibly at all, and then we must replace the damaged evaporator to keep the interior cabin cool.
This evaporator is only included with the housing assembly, but it does not include the blower motor, resistor, or intake duct.
Evaporator fails can for the most part be summed up in single word: leaks. Holes can happen for a couple of various reasons. For the most part, either a crease or weld has turned weak, making a break point, or erosion has happened, causing an “outside-in” failure. This regularly happens in light of the fact that leaves or other natural material enter the evaporator case through the outside air consumption vents and interact with the evaporator’s surface. This sodden environment causes deterioration of the natural materials, and can frame scathing destructive substances which can in the long run puncture the outside of the evaporator. These equivalent substances can likewise once in a while lead to a smell issue inside the vehicle, most recognizable when the framework is first worked. Different freshening up biocide treatments and drying modules are accessible to help with this issue. The evaporator blades are likewise vulnerable to obstructing from leaves and different garbage.
Whichever the sort of evaporator disappointment, it must be supplanted. And keeping in mind that an evaporator all by itself may not be (for most vehicles) an expensive part, contingent on its area (normally like warmer cores, profoundly covered underneath the instrument board) this is regularly a very tedious, and expensive fix.
However there are some industries which manufacture the best quality AC Evaporator Housing i.e American Standard, Lennox, Carrier, Trane, Amana, Luxaire, Fujitsu, etc.
About Used A/C Evaporator Housings
The evaporator housing is the plastic box inside the dash that holds the evaporator, the heater core, and the blend doors that mix your air. A used housing helps when the case is cracked or the internal doors are broken.
What an A/C Evaporator Housing Does
The A/C evaporator housing, part of the HVAC box, is the plastic enclosure inside the dashboard that holds the evaporator core and often the heater core. It contains the blend and mode doors that direct airflow and mix hot and cold air, and it channels the blower's air to the right vents.
Signs Your A/C Evaporator Housing Is Failing
- Air coming from the wrong vents, or temperature that will not blend, from broken internal doors
- A cracked housing that leaks air or water
- Broken mounting points for the blend door actuators
- Water leaking into the cabin from a cracked case or blocked drain
What to Check When Buying a Used A/C Evaporator Housing
- Check the housing for cracks and broken mounting tabs
- Confirm the blend and mode doors are intact and move freely
- Inspect the actuator mounting points
- Match the exact housing for your vehicle and climate control type
Common Applications
Every vehicle with air conditioning has an HVAC housing of this kind. The plastic doors and actuator mounts inside can crack or break with age, which is a common reason to replace the case.
Related Parts
A/C Evaporator • Heater Core • Heater Blower Motor
Frequently Asked Questions
What does the evaporator housing do?
It is the plastic box in the dash that holds the evaporator and usually the heater core, and it contains the doors that blend hot and cold air and direct it to the vents. It routes the blower's air through the system.
Why would I need a used evaporator housing?
Usually because the case is cracked or the internal blend or mode doors have broken, which causes air to come from the wrong vents or the temperature to stop blending. A sound used housing restores proper airflow control.
Is replacing the housing a big job?
It can be, since the housing sits deep in the dash along with the evaporator and heater core. That labor is why starting with a solid used part makes sense.
Are evaporator housings vehicle-specific?
Yes. They are shaped for your vehicle's dash and climate control system, with specific door and actuator layouts, so match the correct housing to your application.
