LENNOX AQA042TAA Compressor Scroll 104575-10 41500-BTU R-410A

( Brand: Lennox ), ( Manufacturer Part Number: AQA042TAA ), ( Compressor Type: Scroll ), ( Power Source: Corded Electric ), ( Refrigerant: R-410a ), ( Color: Black ), ( Material: Steel ), ( Power Phase: 3 Phase ), ( Tonnage: 4-4.9 Tons ), ( Type: Compressor Assembly ), ( Unit Type: Unit ), ( Capacity: 48, 100-58, 000 Btuh )

Review LENNOX Compressor Assembly Scroll Btu R-410a

The **Lennox AQA042TAA 104575-10 Compressor Scroll** is a high-performance, variable-speed scroll compressor designed to deliver exceptional efficiency, reliability, and durability in residential and light commercial air conditioning and heat pump systems. Engineered with Lennox s advanced engineering expertise, this compressor operates at a rated capacity of **4.2 tons (48,000 BTU/hr)** and is optimized for use with **R-410A refrigerant**, a widely adopted eco-friendly alternative to older refrigerants like R-22. The scroll design ensures smooth, continuous operation with minimal vibration and noise, making it ideal for seamless integration into modern HVAC systems. Built with a robust **copper-wound motor** and precision-machined scroll elements, this compressor maintains superior energy efficiency while providing consistent cooling and heating performance across a wide range of operating conditions. Its **variable-speed capability** allows for precise modulation, reducing energy consumption by adjusting output in response to real-time demand, which translates to lower utility costs and extended equipment lifespan. The unit is also equipped with **Lennox s advanced protection features**, including overcurrent, overload, and short-circuit safeguards, ensuring long-term reliability and reducing the risk of system failure. Whether installed in a single-family home, a small commercial space, or a multi-zone HVAC setup, this compressor delivers dependable performance in both cooling and heating modes, making it a versatile and cost-effective choice for modern climate control systems. Its compact yet sturdy construction also simplifies installation, allowing for easier integration into existing ductwork and refrigerant lines. For homeowners and contractors seeking a high-efficiency, low-maintenance solution, the Lennox AQA042TAA stands out as a premium compressor that balances performance, sustainability, and longevity.

The **Lennox AQA042TAA** is a high-efficiency, variable-speed air-source heat pump designed for residential use. It features a **4-ton capacity**, a **scroll compressor**, and operates with **R-410A refrigerant**. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Lennox AQA042TAA**

1. **High Efficiency**

- The unit is part of Lennox s **Variable-Speed Series**, which offers superior energy efficiency compared to traditional single-stage systems. It can adjust its speed to match demand, reducing energy waste.

- The **AFUE (Annual Fuel Utilization Efficiency) rating** is typically high (often 95% or better for heating) and the **SEER (Seasonal Energy Efficiency Ratio)** is also strong (often 16 ), leading to lower utility bills.

2. **Variable-Speed Technology**

- Unlike older systems that run at full capacity or off, this unit modulates speed, providing **consistent comfort** without rapid cycling. This results in quieter operation and more even temperature control.

- The variable-speed compressor reduces wear and tear, potentially extending the system s lifespan.

3. **Quiet Operation**

- Lennox systems are known for being quieter than conventional heat pumps, especially at lower speeds. This makes them ideal for homes where noise is a concern.

4. **Durable Construction**

- Lennox is a reputable brand with a history of reliability. The **scroll compressor** is generally more durable than piston compressors, with fewer moving parts and less wear over time.

- The unit is designed for **long-term performance**, often coming with warranties that cover parts for 10 years.

5. **Multi-Stage Heating and Cooling**

- The variable-speed capability allows for **fine-tuned temperature control**, improving comfort in both heating and cooling modes. It can handle mild heating needs without switching to auxiliary heat, improving efficiency.

6. **Compatibility with Smart Thermostats**

- Many Lennox systems integrate well with smart thermostats (e.g., Ecobee, Google Nest), allowing for remote control, scheduling, and energy monitoring.

7. **Environmentally Friendly (Relative to Older Systems)**

- While R-410A is being phased out (replaced by R-413A or R-32 in newer models), it is still widely available and safe for use in properly serviced systems. Lennox s newer models are transitioning to more eco-friendly refrigerants.

8. **Residential-Grade Performance**

- The 4-ton capacity makes it suitable for **larger homes** (typically 2,000 3,000 sq. ft.), though proper sizing is crucial to avoid inefficiencies.

9. **Warranty Coverage**

- Lennox often provides **10-year limited warranties on the compressor** and **lifetime limited warranties on heat exchangers** (with registration), which adds value.

10. **Professional Installation and Support**

- Lennox dealers are typically well-trained, ensuring proper installation and maintenance, which is critical for system longevity.

---

### **Cons of the Lennox AQA042TAA**

1. **Higher Upfront Cost**

- Variable-speed heat pumps are **more expensive** than single-stage or two-stage systems. The Lennox AQA042TAA will likely cost **$5,000 $8,000 installed**, depending on labor, ductwork, and additional features.

- This may be a barrier for budget-conscious buyers, though the long-term savings on energy bills can offset the cost.

2. **R-410A Phasing Out**

- R-410A is being **banned in new installations in many regions by 2025** (varies by country/state). While this unit can still be installed now, future refrigerant shortages or higher costs may arise.

- If you plan to keep the system long-term, consider whether a newer model with **R-413A or R-32** (more eco-friendly) would be a better long-term investment.

3. **Installation Complexity**

- Variable-speed systems require **proper sizing, ductwork, and electrical setup**. Poor installation can lead to inefficiencies or premature failure.

- If your existing ductwork is inadequate, additional modifications may be needed, increasing costs.

4. **Limited Availability of Parts**

- While Lennox is reliable, **scroll compressors** can be more expensive to replace than traditional compressors if they fail. Ensure your installer carries the right parts.

- Some smaller dealers may not stock Lennox-specific components, requiring longer wait times for repairs.

5. **Not Ideal for Extremely Cold Climates**

- While Lennox offers **cold-weather kits** and models rated for lower temperatures, the AQA042TAA may struggle in **sub-freezing conditions** without auxiliary heat. If you live in a region with **frequent sub-zero temperatures**, a **hybrid heat pump** or **gas furnace backup** may be necessary.

- Lennox s **AQ Series** is generally better suited for **mild to cold climates** (down to 0 F with proper setup).

6. **Potential for Higher Maintenance Costs**

- Variable-speed systems have more components (sensors, variable-speed drives), which could lead to **higher maintenance costs** if something fails. However, proper maintenance should mitigate this risk.

7. **Resale Value Depends on Market**

- Like all HVAC systems, Lennox units hold **some resale value**, but it depends on demand, local market conditions, and the system s age. A newer variable-speed unit may not retain value as well as a well-maintained older system in some cases.

8. **Learning Curve for Users**

- Some homeowners may find variable-speed systems **less intuitive** to control, especially if they re used to traditional on/off systems. Smart thermostats can help, but there may be an adjustment period.

9. **Potential for Over-Sizing Issues**

- If the unit is **oversized for your home**, it can lead to **short cycling**, reduced humidity control, and higher wear on components. Proper **load calculation** by a professional is essential.

10. **Dependence on Electrical Grid**

- Like all electric heat pumps, this system **relies on electricity**. In areas prone to power outages, you may need a **backup generator** for heating/cooling during emergencies.

---

### **Conclusion**

The **Lennox AQA042TAA** is a **high-quality, energy-efficient heat pump** that excels in comfort, durability, and quiet operation. Its variable-speed technology provides **superior temperature control** and long-term savings on energy bills, making it ideal for **moderate to cold climates** where it can replace both heating and cooling systems efficiently.

However, the **higher upfront cost**, **R-410A refrigerant limitations**, and **potential installation complexities** are significant drawbacks. If you prioritize **efficiency, comfort, and longevity**, this unit is a strong choice **especially if installed by a qualified technician**. That said, if you re in a **very cold climate** or concerned about future refrigerant availability, exploring **newer Lennox models with R-32 or R-413A** (e.g., the **AQ Series with updated refrigerants**) may be wiser.

For most **moderate to cold climates**, the **AQA042TAA remains a top-tier option**, but weigh the long-term benefits against the initial investment.

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### **Recommendation**

You need a **high-efficiency, quiet, and durable** heat pump for a **larger home (2,000 3,000 sq. ft.)**.

Your climate is **moderate to cold** (with proper cold-weather setup if needed).

You can afford the **higher upfront cost** and are willing to invest in **professional installation and maintenance**.

You want **long-term energy savings** and **consistent comfort** without rapid temperature swings.

You plan to keep the system for **10 years** (or longer), as the efficiency and durability justify the cost.

You re in a **very cold climate** (below 0 F frequently) without a backup heat source.

You want to **avoid R-410A** and prefer a newer refrigerant (look for Lennox models with **R-32 or R-413A**).

Your budget is tight, and you d rather prioritize a **lower-cost, two-stage system** for now.

Your ductwork is **poorly designed**, as this could negate efficiency gains.

The **Lennox AQA042TAA is one of the best variable-speed heat pumps** for its class, offering **superior performance and efficiency** at a premium price. If your needs align with its strengths, it s a **solid long-term investment**. However, always **get a professional load calculation** and **compare quotes** from multiple dealers to ensure you re getting the best deal.

Details:

Specifications: Brand: Lennox. Designed for use with R- 410a refrigerant, the scroll compressor provides smooth, quiet operation reduced vibration and long-lasting durability. Type: Scroll Compressor Assembly. The Lennox AQA042TAA / 104575-10 Scroll Compressor Assembly is a high-efficiency OEM replacement compressor designed for reliable performance in commercial HVAC systems.

Built for commercial HVAC applications. Application: HVAC cooling systems. Operates at 208-230V, 60Hz, 3PH. Built for 208-230VAC, 60Hz, 3-phase operation, this unit delivers 41,500 btu capacity with 10.5 EER efficiency, ensuring powerful and energy-efficient cooling.

Scroll design ensures smooth, quiet, and efficient operation. Key Features: Genuine Lennox OEM scroll compressor assembly.

part #: aqa042taa prices

• $3266.99-$3816.99

specifications motohva:

• brand: Lennox
• mpn: Aqa042taa
• compressor type: Scroll
• power source: Corded Electric
• refrigerant: R-410a
• color: Black
• material: Steel
• power phase: 3 Phase
• tonnage: 4-4.9 Tons
• type: Compressor Assembly
• unit type: Unit
• capacity: 48, 100-58, 000 Btuh

returns motohva:

• method: Money back
• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

payments motohva:

• other
• wallet: Paypal
• credit card: Discover

shipping motohva:

• transit: 5-12 Days
• carrier: UPS, FedEx
• service: UPS Ground Saver, FedEx Ground Economy, FedEx 2Day, FedEx Ground / FedEx Home Delivery
• type: Fixed
• class: Economy, Expedited, Standard
• cost: $0.00

general motohva:

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

seller motohva:

• rating: 99.7%
• # reviews: 1622
• city: Riverview, Florida

offer motohva:

• quantity: 4
• best offers: True
• options: Ship-to-home
• started: March 26, 2026
• sold: 0
• availability: In Stock

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