UAC 21511LC Compressor 711307062140 A/c

( Brand: Uac ), ( Manufacturer Part Number: 21511LC ), ( Part Type: Compressor ), ( UPC: 711307062140 ), ( Gtin: 00711307062140 )

Review UAC Co A/c Compressor

The **UAC 21511LC A/C Compressor** is a high-performance, hermetically sealed reciprocating compressor designed for demanding automotive air conditioning systems, offering exceptional reliability and efficiency in both residential and commercial applications. Engineered with precision, this compressor features a robust **12-volt electrical system** compatible with a wide range of vehicle makes and models, making it an ideal replacement for failing or worn-out units in R-134a and R-1234yf refrigerant systems. Its **low-side suction design** ensures smooth operation under varying load conditions, while the **built-in thermal protection** safeguards against overheating, extending the lifespan of the entire A/C system. Constructed from high-grade materials, including a **durable aluminum cylinder block** and a **reinforced piston assembly**, this compressor delivers consistent cooling performance even in extreme operating temperatures, from freezing winter conditions to scorching summer heat. The **sealed, leak-proof construction** eliminates the need for frequent maintenance, reducing downtime and repair costs, while its **oil-injected design** ensures optimal lubrication for extended durability. Whether installed in a sedan, SUV, or light-duty truck, the **UAC 21511LC** provides quiet, efficient cooling with minimal vibration, thanks to its **balanced rotor and precision-machined components**. Backed by UAC s reputation for quality engineering, this compressor is a dependable choice for professionals and DIY enthusiasts alike, offering a seamless fit and reliable performance for years to come.

**Pros and Cons of buying a UAC 21511LC A/C Compressor**

The UAC 21511LC is a popular aftermarket air conditioning compressor designed for use in vehicles, particularly those with R-134a refrigerant systems. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **Compatibility and Reliability** The UAC 21511LC is widely recognized for its compatibility with a broad range of vehicles, including many domestic and imported models. It is designed to replace OEM compressors in systems that use R-134a refrigerant, making it a common choice for DIY mechanics and professional technicians.

2. **Durability and Build Quality** UAC (Universal Air Conditioning) is known for producing high-quality compressors with robust construction. The 21511LC features a durable housing, reinforced seals, and a reliable internal design that reduces the risk of premature failure, especially when properly installed and maintained.

3. **Ease of Installation** Compared to some OEM compressors, the UAC 21511LC is often easier to install due to its standardized mounting patterns and clear labeling. Many users appreciate the straightforward fitment, though exact installation steps may vary depending on the vehicle.

4. **Warranty and Customer Support** UAC offers a warranty on its compressors, typically covering defects in materials and workmanship for a specified period (often 1 2 years). The company also provides customer support, including technical assistance and replacement parts if issues arise.

5. **Cost-Effective Alternative to OEM** Purchasing a UAC compressor can be more economical than buying an OEM part, especially when factoring in labor costs. For many consumers, it represents a balance between quality and affordability.

6. **Performance Consistency** When properly installed and paired with the correct refrigerant and oil, the UAC 21511LC delivers consistent cooling performance. It is designed to handle typical A/C loads without excessive strain, provided the system is in good condition.

7. **Availability of Accessories and Upgrades** UAC offers a range of compatible accessories, such as pulleys, mounts, and mounting kits, which can simplify installation. Additionally, users can often find replacement seals, valves, and other components if maintenance or repairs are needed.

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### **Cons**

1. **Potential for Incompatibility Issues** While the UAC 21511LC is designed for broad compatibility, some vehicles may require specific modifications or additional parts (such as custom pulleys or mounts) to ensure a perfect fit. Improper fitment can lead to leaks, poor performance, or even damage to the compressor or surrounding components.

2. **Quality Control Concerns** As with any aftermarket part, there is a risk of receiving a defective unit, especially if purchased from unauthorized sellers. Counterfeit or low-quality replicas of the UAC 21511LC may lack the durability and performance of the genuine product, leading to premature failure.

3. **Dependence on Proper Installation** The compressor s performance is highly dependent on correct installation. Improper installation such as incorrect refrigerant charging, oil contamination, or misaligned mounting can void warranties and reduce the lifespan of the compressor. This makes it essential for users to follow manufacturer guidelines or seek professional assistance.

4. **Limited Longevity Compared to OEM** While UAC compressors are durable, they may not last as long as high-quality OEM parts, particularly in vehicles with aggressive driving conditions or poorly maintained A/C systems. Regular maintenance (such as refrigerant top-ups and oil changes) is necessary to maximize longevity.

5. **Refrigerant and Oil Requirements** The UAC 21511LC is designed for R-134a systems, and using the wrong refrigerant or oil (such as PAG or mineral oil) can damage the compressor. Users must ensure they are using the correct fluids to avoid costly repairs.

6. **Potential for Noise or Vibration** Some users report that the UAC 21511LC may produce slightly more noise or vibration than an OEM compressor, particularly if the mounting is not perfectly aligned or if the pulley tension is incorrect. This can be mitigated with proper installation techniques.

7. **Limited Customization** Unlike some high-end aftermarket compressors, the UAC 21511LC offers limited customization options. Users cannot adjust performance characteristics (such as capacity or efficiency) beyond what the standard model provides.

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### **Conclusion**

The UAC 21511LC A/C compressor is a solid choice for many vehicle owners seeking a reliable, cost-effective replacement for their OEM compressor. Its strengths lie in its compatibility, durability, and ease of installation, making it a favorite among DIY enthusiasts and professionals alike. However, its effectiveness depends heavily on proper installation and maintenance, and users must ensure they are purchasing a genuine product to avoid quality issues.

For most applications, especially in vehicles with standard R-134a systems, the UAC 21511LC offers a good balance of performance and affordability. That said, those working on high-performance or luxury vehicles may prefer OEM or higher-end aftermarket options for optimal reliability and longevity.

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### **Recommendation**

If you are replacing an A/C compressor in a vehicle that uses R-134a refrigerant and you are confident in your mechanical skills or have access to professional assistance, the UAC 21511LC is a **strong recommendation**. Here are the key steps to ensure success:

1. **Verify Compatibility** Double-check that the UAC 21511LC is compatible with your specific vehicle model. Consult the manufacturer s documentation or a trusted mechanic if unsure.

2. **Purchase from Authorized Sources** Buy the compressor from a reputable dealer or directly from UAC s official website to avoid counterfeit or low-quality units.

3. **Follow Installation Guidelines** Carefully follow the installation instructions provided by UAC. Pay special attention to refrigerant charging, oil type, and mounting alignment.

4. **Use the Correct Refrigerant and Oil** Ensure you are using **PAG oil** (the standard for R-134a systems) and the correct amount of refrigerant. Overcharging or undercharging can damage the compressor.

5. **Consider Professional Installation** If you are not experienced with A/C system repairs, hiring a professional to install the compressor is highly advisable. Proper installation is critical to the compressor s performance and lifespan.

6. **Maintain the System Regularly** Schedule regular A/C system checks, including refrigerant level monitoring and oil condition assessments, to prevent premature failure.

For those on a tight budget or with limited mechanical experience, the UAC 21511LC is a practical and reliable option. However, if your vehicle has unique requirements or you are working on a high-performance system, research alternative compressors or consult a specialist to ensure the best fit.

Details:

Brand New, OE replacement: UAC branded CVC Compressor Assembly. Global Trade Identification Number: 40. Style: Portable. Includes: body, clutch, pulley coil; compressor may come charged with shipping oil to keep the part lubricated during transit - drain and replace according your systems requirements.

Model Name: CO 21511LC. Exterior: Machined. Manufacturer: UAC.

UAC CO 21511LC A/C Compressor: Brand.

part #: 21511lc prices

• $89.98-$289.04

specifications motohva:

• brand: Uac
• mpn: 21511lc
• part type: Compressor
• upc: 711307062140
• gtin: 00711307062140

returns motohva:

• policy: No Returns

offer motohva:

• started: March 9, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1

payments motohva:

• wallet: Google-pay
• other
• credit card: Mastercard

seller motohva:

• rating: 100.0%
• # reviews: 488
• city: US

shipping motohva:

• class: Standard
• transit: 3-9 Days
• service: Standard
• cost: $0.00
• type: Fixed

general motohva:

• HVAC Refrigeration > HVAC Refrigeration Components > Compressors
• condition: New

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