WEG HOWDEN AF-8-R08125-4 Centrifugal Blower Frame 1/2 115/208-230V 3500RPM 1.15SF W56C

( Brand: Weg Howden ), ( Manufacturer Part Number: AF-8-R08125-4 ), ( Model: AF-8-R08125-4 / 5036ES1BW56C-S ), ( Type: Centrifugal Blower ), ( Voltage: 115/208-230 V ), ( Material: Aluminum ), ( Power Phase: 1 Phase )

Review WEG HOWDEN 1/2 Hp Centrifugal Blower 115/208-230v 3500rpm Frame

The **Weg Howden AF-8-R08125-4 Horsepower Centrifugal Blower** is a high-performance, energy-efficient industrial-grade fan designed for demanding applications requiring precise airflow management, reliability, and durability. Engineered with precision, this centrifugal blower operates at a consistent **3,500 RPM**, delivering a steady and controlled airflow output of **1.15 cubic feet per second (CFM)** while maintaining optimal pressure levels for its intended use. Built on a robust **W56C frame**, this unit combines the strength and efficiency of Weg s premium electric motor technology with Howden s aerodynamically optimized impeller design, ensuring superior performance in both clean and mildly contaminated environments.

The blower s ** horsepower (HP) motor**, rated for **115/208-230V single-phase operation**, provides the necessary torque and efficiency for applications such as HVAC systems, industrial ventilation, dust collection, or process air movement. Its compact yet sturdy construction allows for easy integration into existing mechanical systems, while the sealed motor design minimizes maintenance requirements and extends operational lifespan. The centrifugal design ensures smooth, pulsation-free airflow, making it ideal for applications where consistent pressure and volume are critical, such as in laboratory ventilation, small-scale manufacturing, or commercial exhaust systems.

Constructed with high-grade materials, this blower is built to withstand continuous operation under moderate load conditions, offering a balance of performance and longevity. The **AF-8 series** designation indicates a versatile, mid-range centrifugal blower suited for applications where space constraints or moderate airflow demands are primary considerations. Whether used in a controlled industrial setting or as part of a specialized ventilation system, this unit delivers reliable performance with minimal noise and vibration, contributing to a quieter, more efficient operational environment. Its straightforward installation and compatibility with standard electrical systems further enhance its practicality for technicians and engineers seeking a dependable, off-the-shelf solution.

### **Pros and Cons of buying a Weg Howden AF-8-R08125-4 (1/2 HP Centrifugal Blower)**

1. **Reliable Brand** Weg Howden is a well-established manufacturer known for durable industrial and commercial equipment, particularly in HVAC and ventilation applications. Their centrifugal blowers are often preferred for longevity and consistent performance.

2. **Proper Power Rating for Small Applications** The 1/2 HP motor is sufficient for moderate airflow requirements (1.15 CFM at 56" static pressure), making it suitable for small exhaust systems, fume hoods, or localized ventilation in workshops, labs, or light commercial spaces.

3. **Dual Voltage (115V/208-230V)** The ability to operate on both single-phase (115V) and three-phase (208-230V) power provides flexibility in installation, especially in mixed-voltage environments or where phase availability is limited.

4. **Standardized Frame (W56C)** The W56C frame is a common NEMA size, meaning replacement parts, bearings, and motors are widely available, reducing long-term maintenance costs.

5. **High RPM (3500 RPM)** The 3500 RPM speed allows for efficient airflow delivery, which can be advantageous in applications requiring quick exhaust or pressure differentials without needing a larger, slower motor.

6. **Compact and Lightweight** At 1/2 HP, this blower is relatively small and easy to install in tight spaces, making it practical for retrofits or applications with limited clearance.

7. **Centrifugal Design** Centrifugal blowers are robust and better suited for handling dust, debris, or corrosive gases compared to axial fans, depending on the inlet/outlet configuration and material of construction.

8. **Potential for Quiet Operation** If properly installed with sound-dampening materials and ductwork, centrifugal blowers can operate more quietly than some axial fans, especially at lower pressures.

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1. **Limited Airflow Capacity** At only 1.15 CFM at 56" static pressure, this blower is **not suitable for large-scale ventilation** (e.g., full-room HVAC, industrial exhaust systems, or high-volume fume extraction). It may struggle in applications requiring higher airflow rates.

2. **High Static Pressure Drawback** The 56" static pressure rating means the motor must work harder to push air through restrictive ductwork or filters. This can lead to **higher energy consumption** and potential overheating if the system is not properly sized or maintained.

3. **Potential for Noise** Centrifugal blowers can generate more noise than axial fans, especially at higher pressures. Without proper sound attenuation (e.g., silenced housings, flexible ducting), this could be an issue in noise-sensitive environments.

4. **Single-Speed Operation** This blower lacks variable speed control, meaning airflow is fixed. Applications requiring adjustable airflow (e.g., demand-controlled ventilation) would need an external variable frequency drive (VFD), adding cost and complexity.

5. **Maintenance Requirements** Like all centrifugal blowers, this unit requires periodic bearing lubrication, belt tension checks (if belt-driven), and seal inspections to prevent air leaks. Neglect can lead to premature failure.

6. **Cost of Replacement Parts** While the W56C frame is standard, specialized components (e.g., impellers, seals) may still be expensive, particularly if the blower is no longer in production.

7. **Voltage Compatibility Issues** If the installation site lacks the correct voltage (e.g., 208V/230V three-phase), additional wiring or a transformer may be needed, increasing installation costs.

8. **Limited Customization** This is a stock unit with fixed specifications. If your application requires non-standard inlet/outlet sizes, special materials (e.g., stainless steel), or unique mounting, modifications may be necessary, adding expense.

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The **Weg Howden AF-8-R08125-4** is a **well-suited, reliable choice for small to moderate ventilation tasks** where airflow requirements are low to moderate (under 2 CFM) and static pressure demands are high (e.g., localized exhaust, fume hoods, or small industrial processes). Its dual-voltage capability, durable construction, and standard frame make it a practical off-the-shelf solution for many applications.

However, it is **not ideal for large-scale ventilation, high-volume airflow, or applications requiring adjustable speed control**. If your project demands higher CFM, lower static pressure, or variable airflow, a different blower (e.g., a larger centrifugal model, axial fan, or VFD-controlled unit) would be more appropriate.

- Your application requires ** 1.15 CFM at 56" static pressure** (e.g., small exhaust systems, lab hoods, or localized fume extraction).

- You need a **reliable, low-maintenance** solution with a proven brand.

- Your power supply matches **115V/208-230V**, and installation space is adequate.

- Noise is not a critical concern, or sound attenuation can be added.

- You need **higher airflow (above 2 CFM)** opt for a larger centrifugal blower (e.g., 1 HP or higher) or an axial fan.

- Your system requires **variable speed control** pair this with a VFD or choose a model with built-in speed adjustment.

- The blower will operate in **harsh environments** (e.g., extreme temperatures, corrosive gases) ensure the housing and seals are compatible (e.g., stainless steel or coated materials).

- Noise is a major concern evaluate silenced models or axial fans for quieter operation.

For most **small-scale, high-pressure exhaust applications**, this blower is a **solid, cost-effective choice**. For anything beyond its rated capacity, a different model would be more efficient and cost-effective in the long run.

Details:

Warranty begins on the date merchandise is received. COMPANY NAME, ADDRESS and PHONE NUMBER. WEG HOWDEN 1/2 HP CENTRIFUGAL BLOWER, MOTOR model NO. 5036ES1BW56C-S, 115/208-230 VOLT AC, 3500RPM / 1, 1.15 SERVICE FACTOR, W56C FRAME, 7.00/3.87-3.50 AMP, FAN model NO.

SHIPPING PACKAGED ITEMS: Orders put in before 8am will got out the same day, orders placed after next day. We combine all shipping.

part #: af8r081254 prices

• $225.00-$299.99

specifications fablowehva:

• brand: Weg Howden
• mpn: Af-8-r08125-4
• model: Af-8-r08125-4 / 5036es1bw56c-s
• type: Centrifugal Blower
• voltage: 115/208-230 V
• material: Aluminum
• power phase: 1 Phase

seller fablowehva:

• city: Pennsauken, New Jersey
• rating: 99.9%
• # reviews: 11443

payments fablowehva:

• wallet: Paypal
• other
• credit card: Diners-club

returns fablowehva:

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

offer fablowehva:

• quantity: 1
• availability: In Stock
• started: February 27, 2026
• sold: 0
• options: Ship-to-home

general fablowehva:

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

shipping fablowehva:

• transit: 3-6 Days
• cost: $91.47
• service: UPS Ground, UPS Next Day Air Saver
• class: Standard, One-day
• type: Calculated
• carrier: UPS

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