Used A/C Compressor
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The Compressor is known as the “heart” of air conditioning system. It creates the heat by developing an extremely high pressure in the air conditioning refrigerant. As the pressure and temperature are related, we can see how high pressure refrigerant is actually hot.
The A/C Compressor consists of the compressor itself and the clutch assembly which is a combination of three parts; the hub, pulley, and coil. It consists of 2 ports, an inlet and outlet, or ‘suction’ and ‘discharge’ respectively. The suction port is, always has the hole of larger diameter. Refrigerant is ‘sucked’ into the compressor, compressed, and ‘discharged’ through the outlet, headed for the condenser. The complex series of passageways, valves, bearings, and other components are present inside the compressor, including several types of pumps i.e. piston type, rotary vane, and scroll.
The cold refrigerant flows into the evaporator core, which is located in or right at the dash. The blower motor blows air across the evaporator core. As the warm air moves across the evaporator, the heat is removed from it, transferred to the refrigerant, and cold air enters the passenger compartment. Warm refrigerant leaves the evaporator, and heads back towards the A/C Compressor, where the cycle begins again.
Howbeit, before buying, A/C compressors three elements must have kept in mind Quality, Reliability and Value. The famous A/C compressors from all over the world are Denso, Direct Industry, Danfoss, etc.
In Detailed Explanation:
At the point when the A/C is on, the blower sucks low weight refrigerant in, and packs it to high-weight, hot refrigerant. The refrigerant goes to the condenser, which is found just before the radiator. From there, the hot refrigerant goes through a progression of cylinders. Air blowing over the condenser blades chills the refrigerant off. At more prominent paces, the air from movement is sufficient to cool the refrigerant. At lower speeds or when out of gear, there are cooling fans or a fan grip that move air over the condenser. The cooler refrigerant moves from the condenser and heads for the evaporator center. Before coming to the evaporator, the refrigerant must go through an extension gadget, either a hole cylinder or development valve. The extension gadget limits the stream of the refrigerant, giving it a chance to go through a little hole. As the refrigerant goes through this hole, it grows rapidly, and swings to exceptionally cool fluid. A comparative impact can be seen when you blow hard through a straw. The air leaving the finish of the straw is a lot cooler that the air leaving your lungs. Put a little water in your mouth and ‘fog’ it as you blow, and the water will feel quite cool. Same impact at the extension gadget.
The cool refrigerant streams into the evaporator center, which is situated in or comfortable dash. The blower engine blows air over the evaporator center. As the warm air moves over the evaporator, the warmth is expelled from it, exchanged to the refrigerant, and cold air enters the traveler compartment. Warm refrigerant leaves the evaporator, and heads back towards the A/C Compressor, where the cycle starts once more.
The aggregator or recipient drier (collectors are on the low side, beneficiary driers on the high side) contain a desiccant pack which channels flotsam and jetsam, and go about as a store for refrigerant oil. An A/C framework will have just a gatherer or beneficiary drier, not both.
Find junkyards that may have you A/C compressor in stock! You can search in the USA by zip code for used auto salvage parts near you using our used parts request form.
About Used A/C Compressors
The A/C compressor is the pump at the heart of your air conditioning, and when it fails the system stops cooling. A good used compressor is a budget-friendly alternative to new, though the system needs proper service when you install one.
What an A/C Compressor Does
The A/C compressor is a belt-driven pump that pressurizes the refrigerant and circulates it through the air conditioning system. An electric clutch on the pulley engages the compressor when you call for cooling. By compressing the refrigerant, it drives the whole cycle that pulls heat out of the cabin.
Signs Your A/C Compressor Is Failing
- No cold air, or air conditioning that has stopped working entirely
- A grinding or squealing noise from a worn compressor bearing
- A clutch that will not engage, or engages and slips
- Refrigerant leaks at the compressor seals, or metal debris in the system from an internal failure
What to Check When Buying a Used A/C Compressor
- Turn the clutch and pulley by hand to check for smooth movement and a good bearing
- Confirm the clutch engages and the shaft is not seized
- Check for oil or refrigerant leakage around the seals
- Match the exact compressor for your vehicle and refrigerant type
Common Applications
Every vehicle with factory air conditioning has a compressor. Clutch and bearing wear are common failures, and an internal failure that sends metal through the system is a known and serious issue that affects the whole A/C circuit.
Related Parts
A/C Condenser • A/C Evaporator • A/C Hose
Frequently Asked Questions
What happens when an A/C compressor fails?
You lose cooling. Depending on how it failed you may hear grinding or squealing, notice the clutch not engaging, or find leaks. If it failed internally and sent metal through the system, other parts can be contaminated too.
Can I install a used A/C compressor myself?
You can fit the part, but the system has to be evacuated and recharged with the correct refrigerant and oil amount, which needs A/C equipment. Many people install the used compressor and have a shop handle the evacuation and recharge.
Do I need to replace other parts with the compressor?
If the old compressor failed internally and spread debris, yes, the system should be flushed and parts like the orifice tube or drier replaced. If it simply lost its clutch or bearing without contaminating the system, the compressor alone may do.
Are A/C compressors vehicle-specific?
Yes. They are matched to your vehicle and its refrigerant type, with specific mounting, clutch, and connections, so use the correct compressor for your application.
