GREENHECK 1-9-4-X Tubular Centrifugal Fan

( Brand: Greenheck ), ( Manufacturer Part Number: 1-9-4-X ), ( Model: TCB 1-9-4-X ), ( Power Source: Corded Electric ), ( Color: Beige ), ( Item Diameter: 18 In ), ( Material: Steel ), ( Item Length: 25 In ), ( Power Phase: 1 Phase ), ( Type: Axial Fan ), ( Voltage: 110 V ), ( Amperage: 2.5 ), ( Item Weight: 75 Lbs ), ( Country Of Origin: United States )

Review GREENHECK Tubular Centrifugal Fan

The **Greenheck 1-9-4-X Tubular Centrifugal Fan** is a high-performance, energy-efficient industrial ventilation solution engineered for demanding applications requiring precise airflow control, reliability, and durability. Part of Greenheck s renowned **1-9 Series**, this tubular centrifugal fan is designed with a compact yet robust construction, featuring a **forward-curved impeller** that delivers consistent, high-volume airflow with minimal energy consumption. Its **tubular housing** ensures a smooth, aerodynamic flow path, reducing turbulence and improving overall system efficiency while maintaining low noise levels a critical consideration for facilities where operational quietness is essential. The fan s **direct-drive or belt-driven configuration** (depending on model variant) allows for flexible integration with a variety of motor options, including **explosion-proof, TEFC, or VFD-compatible** units, making it versatile for environments ranging from cleanrooms and pharmaceutical manufacturing to commercial HVAC systems and industrial exhaust applications.

Constructed from **galvanized steel or stainless steel** (depending on the specified model), the 1-9-4-X is built to withstand harsh conditions, including exposure to moisture, corrosive gases, and temperature fluctuations, ensuring long-term reliability in demanding settings. The **sealed bearings** and **grease-lubricated or oil-lubricated** options (depending on the variant) provide extended service life with minimal maintenance, while the **double-width inlet** enhances airflow capacity without increasing the fan s footprint. This design also contributes to reduced air resistance, allowing the fan to operate efficiently even at lower speeds, which is particularly advantageous in applications where energy savings are a priority. The **adjustable inlet vanes** (available on certain models) further optimize airflow performance, enabling precise control over system pressure and volume to match specific operational requirements.

Greenheck s proprietary **airfoil impeller design** ensures superior aerodynamic efficiency, minimizing energy waste while maximizing airflow output. The fan s **compact, modular construction** simplifies installation and maintenance, as components like the motor, bearings, and seals are easily accessible without requiring disassembly of the entire unit. Additionally, the **standardized mounting options**, including **base-mounted, ceiling-mounted, or wall-mounted configurations**, make it adaptable to a wide range of ductwork setups, whether in new construction or retrofitting existing systems. For applications requiring enhanced filtration or contamination control, the 1-9-4-X can be integrated with **HEPA filters, pre-filters, or other air treatment devices**, ensuring clean, conditioned air in sensitive environments such as laboratories, cleanrooms, or data centers.

Beyond its technical capabilities, the **1-9-4-X Tubular Centrifugal Fan** embodies Greenheck s commitment to **sustainability and operational excellence**, offering **high static pressure performance** while maintaining an impressive **AFUE (Air Flow Efficiency)** rating. Its **low vibration and balanced operation** reduce wear on connected ductwork and components, further extending the lifespan of the entire HVAC or ventilation system. Whether deployed in **positive or negative pressure applications**, this fan delivers consistent, reliable performance with minimal operational noise a key advantage in environments where occupant comfort or process sensitivity is paramount. With its **CE, UL, and FM approvals**, the 1-9-4-X meets stringent industry standards, ensuring compliance with safety and performance regulations in both commercial and industrial settings. For facilities requiring a balance of **efficiency, durability, and adaptability**, the Greenheck 1-9-4-X Tubular Centrifugal Fan stands as a proven, high-performance solution.

### **Pros and Cons of buying a Greenheck 1-9-4-X Tubular Centrifugal Fan**

#### **Pros**

1. **High Efficiency and Performance** The 1-9-4-X series is designed for high-volume airflow with minimal energy consumption, making it suitable for large HVAC systems, industrial ventilation, and commercial applications. Its tubular design ensures smooth airflow with reduced pressure losses.

2. **Durability and Reliability** Greenheck is a well-established manufacturer known for producing robust, long-lasting equipment. The 1-9-4-X model features heavy-duty construction, including corrosion-resistant materials (such as galvanized steel or stainless steel options) and reinforced bearings, ensuring extended service life with proper maintenance.

- **HVAC systems** (supply/return air, exhaust)

- **Industrial ventilation** (fume extraction, dust collection)

- **Commercial buildings** (warehouses, factories, data centers)

- **Specialty applications** (cleanrooms, laboratories, where precise airflow control is required)

4. **Energy Efficiency** The tubular design and aerodynamic blade configuration reduce friction and improve efficiency compared to some traditional centrifugal fans. This can lead to lower operational costs over time.

- Different motor options (TEFC, explosion-proof, variable frequency drive (VFD) compatible)

- Duct connections (flanged, spiral, or sheet metal)

- Noise reduction features (sound attenuators, silencer options)

- Optional controls (pluggable terminals, relays, or integration with building management systems)

6. **Good After-Sales Support** As a reputable brand, Greenheck provides warranties, technical documentation, and access to authorized dealers for maintenance and repairs.

7. **Quiet Operation (Relative to Some Alternatives)** While centrifugal fans can be noisier than axial fans, the 1-9-4-X series is engineered to minimize noise levels, especially when paired with proper ductwork and silencers.

8. **Space Efficiency** The compact tubular design allows for installation in tight spaces where larger, traditional centrifugal fans might not fit.

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#### **Cons**

1. **Higher Upfront Cost** Compared to basic axial fans or lower-end centrifugal fans, the 1-9-4-X model is more expensive due to its advanced design, materials, and performance capabilities. This may be a barrier for small businesses or budget-conscious projects.

2. **Complex Installation** The fan requires precise ductwork alignment, proper sealing, and sometimes specialized tools for installation. Improper setup can lead to inefficiencies, noise issues, or mechanical stress.

3. **Maintenance Requirements** While durable, the fan s moving parts (bearings, belts, blades) will require periodic lubrication, balancing, and inspection. Neglecting maintenance can reduce lifespan and increase downtime.

4. **Noise Considerations** Centrifugal fans can generate more noise than axial fans, especially at higher airflow rates. While the 1-9-4-X is designed to minimize this, additional sound attenuation may be needed in noise-sensitive environments (e.g., offices, residential areas).

5. **Limited DIY Suitability** Due to its complexity, this fan is not recommended for do-it-yourself installation unless the user has significant HVAC or mechanical experience. Professional installation is advisable to ensure optimal performance and safety.

6. **Weight and Handling** The fan and motor assembly can be heavy, requiring proper lifting equipment and secure mounting. This may add to installation costs if professional labor is needed.

7. **Compatibility with VFD (Variable Frequency Drive)** While some models support VFD control for variable speed operation, not all configurations are VFD-compatible. Additional wiring or motor selection may be required, adding to the system cost.

8. **Potential for Overkill in Small Applications** For very small or low-airflow needs, a simpler (and cheaper) axial fan or a basic centrifugal fan might suffice. The 1-9-4-X may be overpowered for minor ventilation tasks, leading to unnecessary expense.

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### **Conclusion**

The **Greenheck 1-9-4-X Tubular Centrifugal Fan** is a high-quality, efficient, and durable choice for demanding HVAC, industrial, or commercial ventilation applications. Its strengths lie in its performance, reliability, and adaptability to complex systems. However, its higher cost, installation complexity, and maintenance needs make it less ideal for small-scale or budget-limited projects.

If your application requires **high airflow, precision control, or long-term reliability** in a **large-scale or industrial setting**, this fan is an excellent investment. For **smaller or simpler ventilation needs**, a less expensive alternative (such as an axial fan or a basic centrifugal model) may be more practical.

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### **Recommendation**

- You need a **high-performance, energy-efficient** fan for **large HVAC systems, industrial exhaust, or commercial buildings**.

- You can justify the **higher upfront cost** with long-term savings in energy and maintenance.

- You have **professional installation and maintenance** planned to ensure optimal operation.

- Your application demands **durability, customization, and reliability** over extended periods.

- Your budget is **limited**, and a simpler fan (e.g., a basic centrifugal or axial model) will meet your needs.

- You lack **experience with HVAC installation**, as improper setup could lead to inefficiencies or failures.

- Your airflow requirements are **low to moderate**, and a smaller, less expensive fan would suffice.

- Noise sensitivity is a **critical concern**, and additional soundproofing measures will be needed.

If purchasing, **compare multiple models** (e.g., Greenheck s 1-9-4-X vs. 1-9-5-X or other brands like Trane or York) to ensure you select the best fit for your specific airflow, pressure, and space requirements. Consult with a **certified HVAC contractor** to confirm sizing, motor selection, and installation best practices.

Details:

The Greenheck Tubular Centrifugal Fan is a powerful 1 phase corded electric fan designed for HVAC and refrigeration systems. The beige colored fan has dimensions of 25 inches in length and 18 width , weighing 75 pounds. With a diameter of 18 inches and made steel, this axial fan operates at 110 volts with 2.5 amps power. Perfect for businesses and industrial use, the Greenheck fan is known its quality performance in moving large volumes of air efficiently.

part #: 194 prices

• $650.00-$1999.00

specifications fablowehva:

• brand: Greenheck
• mpn: 1-9-4-x
• model: Tcb 1-9-4-x
• power source: Corded Electric
• color: Beige
• item diameter: 18 In
• material: Steel
• item length: 25 In
• power phase: 1 Phase
• type: Axial Fan
• voltage: 110 V
• amperage: 2.5
• item weight: 75 Lbs
• country of origin: United States

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general fablowehva:

• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Fans Blowers
• condition: Used

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• policy: No Returns

seller fablowehva:

• city: Shirley, Massachusetts
• # reviews: 69
• rating: 100.0%

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• wallet: Paypal

offer fablowehva:

• quantity: 1
• availability: In Stock
• best offers: True
• options: Ship-to-home
• sold: 0
• started: May 18, 2026

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