1. Industrial Heat Exchangers Products
  2. sku: 2686686037375853
  3. LOCHINVAR HEX-3873

LOCHINVAR HEX-3873 Hlw Heat Exchanger Box Hvac CW360 In

Hex-3873 Lochinvar Hex3873 Cw360 Hlw Heat Exchanger Oem New In Box Nib Hvac

( Brand: Lochinvar ), ( Manufacturer Part Number: HEX-3873 ), ( Model: CW360 ), ( Type: Heat Exchanger ), ( Material: Copper )

Review LOCHINVAR Hex3873 Hlw Heat Exchanger Oem New In Box Nib Hvac

The **Lochinvar Hex-3873 (Hex3873) CW360 HLW Heat Exchanger Box** is a high-performance, commercial-grade HVAC component designed to deliver exceptional efficiency, durability, and reliability in demanding heating and cooling applications. Part of Lochinvar s advanced **Hex Series** line, this heat exchanger box is engineered to optimize heat transfer while maintaining robust structural integrity, making it an ideal solution for large-scale commercial, industrial, or institutional facilities requiring precise temperature control and long-term performance. The **CW360** designation indicates its compatibility with **condensing water heaters**, ensuring seamless integration with Lochinvar s high-efficiency gas-fired systems, while the **HLW (High-Limit Water)** designation underscores its ability to handle elevated water temperatures, enhancing flexibility for applications such as domestic hot water heating, radiant floor systems, or process heating. Constructed from **high-grade stainless steel**, the heat exchanger box resists corrosion, scaling, and thermal stress, even in environments with hard water or fluctuating operating conditions, thereby extending its operational lifespan and reducing maintenance requirements. Its **hexagonal fin design** maximizes surface area for superior heat exchange efficiency, minimizing energy consumption while maintaining consistent performance under varying load conditions. The robust **cast iron or steel housing**, paired with precision-engineered gaskets and seals, ensures leak-proof operation and durability, while the modular design allows for easy installation, servicing, and potential future upgrades. Whether deployed in a large commercial building, a manufacturing facility, or a high-demand residential complex, the Hex-3873 excels in delivering **consistent, high-output heating** with minimal energy waste, aligning with modern sustainability goals while meeting the rigorous demands of commercial HVAC systems. Lochinvar s reputation for innovation and quality ensures that this heat exchanger box not only meets but exceeds industry standards for performance, safety, and reliability.

### **Pros and Cons of buying a Lochinvar Hex-3873 (HEX3873, CW360, HLW Heat Exchanger Box) for HVAC Systems**

#### **Pros**

1. **High Efficiency and Performance**

The Lochinvar Hex-3873 is designed for commercial and industrial heating applications, offering high-efficiency heat transfer. Its advanced heat exchanger technology ensures consistent performance, even under demanding conditions. The unit is optimized for both gas-fired and hydronic systems, making it versatile for various HVAC setups.

2. **Durability and Longevity**

Lochinvar is a well-established brand known for manufacturing robust, long-lasting HVAC equipment. The Hex-3873 features high-quality materials, including stainless steel heat exchangers, which resist corrosion and thermal stress. This durability reduces the likelihood of premature failure and lowers long-term maintenance costs.

3. **Modular and Scalable Design**

The unit is part of Lochinvar s modular series, allowing for easy integration into existing systems or expansion as heating demands grow. The CW360 and HLW configurations provide flexibility for different applications, such as commercial buildings, industrial processes, or large residential setups.

4. **Energy Efficiency and Cost Savings**

The Hex-3873 is engineered to maximize energy transfer, reducing fuel consumption and operational costs. Its high-efficiency design aligns with modern energy codes and sustainability goals, making it a cost-effective choice for businesses and large properties.

5. **Reliability and Low Maintenance**

Lochinvar equipment is designed for minimal maintenance, with features like self-cleaning burners and durable components that reduce downtime. The heat exchanger s robust construction also means fewer issues with scaling or clogging compared to lower-quality units.

6. **Compatibility with Advanced Controls**

The unit can integrate with modern HVAC control systems, including smart thermostats and automation platforms. This compatibility enhances system efficiency and allows for better monitoring and management of heating operations.

7. **Warranty and Customer Support**

Lochinvar offers competitive warranty coverage (typically 5 10 years on heat exchangers and components) and strong after-sales support. This provides peace of mind for buyers, ensuring assistance is available if issues arise.

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#### **Cons**

1. **High Upfront Cost**

Lochinvar equipment is premium-priced, and the Hex-3873 is no exception. The initial investment may be significantly higher than that of generic or lesser-known brands. This could be a barrier for small businesses or budget-conscious buyers.

2. **Complex Installation and Professional Requirements**

Due to its advanced features and modular design, the Hex-3873 may require specialized installation by certified HVAC technicians. This can increase labor costs and may not be feasible for DIY installations.

3. **Limited Availability of Parts and Service Centers**

While Lochinvar has a strong reputation, parts and service support may not be as readily available in all regions compared to more widely distributed brands. This could lead to longer wait times for repairs or replacements.

4. **Overkill for Small-Scale Applications**

The Hex-3873 is designed for commercial or large-scale heating needs. For small residential properties or low-demand applications, the unit may be unnecessarily powerful and expensive, leading to wasted capacity and higher costs.

5. **Potential for Higher Operating Costs in Some Cases**

While the unit is energy-efficient, its advanced features (e.g., precise combustion control) may require higher-quality fuel or more sophisticated maintenance routines. In some cases, this could offset some of the efficiency gains.

6. **Learning Curve for Operators**

The modular and high-tech nature of the Hex-3873 may require training for operators unfamiliar with Lochinvar systems. This could lead to initial inefficiencies if the team is not properly trained.

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### **Conclusion**

The Lochinvar Hex-3873 (HEX3873, CW360, HLW) is a high-quality, efficient, and durable heat exchanger box ideal for commercial, industrial, or large-scale residential HVAC applications. Its strengths lie in its reliability, energy efficiency, and long-term cost savings, making it a strong choice for businesses or property owners with significant heating demands. However, the high upfront cost, complex installation requirements, and potential overkill for smaller systems may deter some buyers.

For **commercial buildings, industrial facilities, or large properties** where efficiency, durability, and scalability are priorities, the Hex-3873 is an excellent investment. For **smaller residential setups or budget-sensitive projects**, a more affordable alternative may be more practical.

### **Recommendation**

- **Buy the Lochinvar Hex-3873 if:**

- You are installing a commercial or industrial heating system.

- You prioritize long-term reliability and energy efficiency.

- Your budget allows for a premium HVAC investment.

- You plan to integrate it with advanced control systems for optimal performance.

- **Consider alternatives if:**

- You are working on a small residential project with lower heating demands.

- You are constrained by a tight budget and need a more cost-effective solution.

- You require easier installation or more widely available parts.

Ultimately, the Hex-3873 is a **top-tier choice for high-demand applications**, but its suitability depends on your specific needs, budget, and system requirements. Consulting with an HVAC professional can help determine whether this unit aligns with your goals.

Details:

Condition: New in Original Box Factory sealed original packaging contents not removed. Serial Number: 00229948. OEM Service Replacement Part. Item is new and unused in original packaging.

Lochinvar HEX3873 Heat Exchanger NEW IN BOX OEM. Genuine OEM Lochinvar replacement heat exchanger. Part Number: HEX3873.: HEX, SVC, HLW, CW360.

Part numbers and serial information are provided for fitment confirmation. Part Details: Manufacturer: Lochinvar.

part #: hex3873 price

  • $1187.86

specifications indheatexchanger:

  • brand: Lochinvar
  • mpn: Hex-3873
  • model: Cw360
  • type: Heat Exchanger
  • material: Copper

seller indheatexchanger:

  • # reviews: 35
  • city: Nabb, Indiana
  • rating: 100.0%

shipping indheatexchanger:

  • class: Standard
  • carrier: UPS
  • transit: 3-10 Days
  • type: Calculated
  • cost: $91.89
  • service: UPS Ground

offer indheatexchanger:

  • quantity: 1
  • availability: In Stock
  • best offers: True
  • options: Ship-to-home
  • sold: 0
  • started: May 19, 2026

returns indheatexchanger:

  • time: 30 Days
  • method: Money back
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  • policy: Returns Accepted

general indheatexchanger:

  • HVAC Refrigeration > HVAC Refrigeration Components > Heat Exchangers
  • condition: New

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type: heat exchanger,
category: business & industrial > hvac refrigeration > hvac refrigeration components > heat exchangers, material: copper, sku: 2686686037375853,
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1 offer $1187.86 USD
  • New. Offer #1 priced at $1187.86 + $91.89 shipping estimate = $1279.75* total. Height: 4". Part Number: HEX3873.+$91.89 shipping

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