20 Foot HVLS Ceiling Fan | 8 Blades | 19,750 Square Foot Coverage | 183620 CFM

Product Overview

This 20 Foot HVLS Ceiling Fan is engineered for large-scale air movement in commercial and industrial environments. The 8-blade design, powered by a 1.5 HP gear drive motor, delivers high-volume, low-speed airflow for effective ventilation and occupant comfort. Typical installations include warehouses, manufacturing facilities, and other expansive spaces with high ceilings where consistent air circulation is required.

The fan operates at a maximum speed of 49 RPM and is capable of moving up to 183,620 CFM, covering areas up to 19,750 square feet. It is suitable for mounting heights starting at 15 feet, with a minimum ceiling clearance of 3?4 feet and a minimum horizontal clearance of 2 feet from obstructions. The included NEMA 1 wall-mounted VFD controller provides variable speed control and integrated safety features.

Core Performance and Output

This HVLS fan delivers 183,620 CFM at full speed, supporting effective air mixing and destratification in large open areas. The 20-foot diameter and 8-blade configuration are designed for maximum coverage, reducing stagnant air and improving thermal comfort across nearly 20,000 square feet. The fan operates quietly, with sound levels below 59 dB at maximum speed.

Variable speed control allows adjustment to match seasonal needs or occupancy levels. The 1.5 HP motor is compatible with 208-480V power and supports both single and three-phase operation. Excessive output may occur if installed below the minimum recommended mounting height of 15 feet, potentially causing discomfort or excessive air movement at occupant level.

Adjustability and Control Options

The fan is equipped with a wall-mounted VFD controller, allowing precise speed adjustment to suit changing ventilation requirements. The controller includes a safety disconnect, on/off toggle, and speed regulator for straightforward operation and maintenance. Variable speed capability supports both high-output summer cooling and low-speed winter destratification.

Multiple voltage options (208V-240V, 110V-120V, 460V-480V) provide flexibility for integration into existing electrical systems. The fan can be adapted to different installation scenarios using the included mounting hardware for I-beams, Z-purlins, or open joists.

Longevity and Reliability

The 1.5 HP gear drive motor is designed for continuous operation in demanding environments. Aluminum blades resist corrosion and maintain structural integrity over time. The fan includes a safety cable, hub clips, hub retainer, and dual-method fastening for all joined components, reducing risk of mechanical failure.

Integrated sprinkler shut-off and robust construction support long-term reliability in commercial and industrial settings. The fan is covered by a 5-year warranty, reflecting its suitability for high-duty-cycle applications.

Build Quality and Physical Characteristics

The fan features an 8-blade aluminum design with a 20-foot diameter, weighing 218 lbs. Blade finishes are available in brushed aluminum, black, blue, or white. The downrod is 1 inch in diameter, supporting secure suspension from compatible ceiling structures.

Mounting options include I-beam, Z-purlin, and open joist configurations, with minimum ceiling and horizontal clearances required for safe operation. The fan is designed for indoor use in large, open spaces with adequate structural support and ceiling height.

Where This Product Fits Best

This HVLS fan is intended for large-volume air movement in expansive, high-ceiling environments. It is commonly installed in facilities where consistent ventilation and occupant comfort are operational priorities.

• warehouse ventilation
• manufacturing facility ventilation
• gymnasium ventilation
• agricultural building ventilation
• aircraft hangar ventilation
• distribution center ventilation
• convention center ventilation
• large retail ventilation

Environments with mounting heights of at least 15 feet and sufficient ceiling and horizontal clearance are required. The fan is suitable for both conditioned and unconditioned spaces where air movement is needed to control temperature stratification, humidity, or occupant comfort.

Installation and Long-Term Use

Installation requires structural mounting to I-beams, Z-purlins, or open joists, with attention to minimum clearance requirements. The fan?s weight and blade span necessitate secure attachment and verification of ceiling load capacity. Electrical connection supports a range of voltages and both single and three-phase power.

Routine inspection of safety cables, hub fasteners, and controller function is recommended. The integrated safety features and robust construction minimize maintenance needs. Long-term operation is supported by the gear drive motor and corrosion-resistant blades, with the 5-year warranty providing additional assurance.

How This Fixture Is Commonly Used

Typical mounting heights range from 15 to 40 feet, depending on ceiling structure and desired airflow pattern. Fans are spaced to provide overlapping coverage, with one unit typically serving up to 19,750 square feet. In larger facilities, multiple fans may be installed in a grid or staggered layout to ensure uniform air movement.

Variable speed operation allows adjustment for seasonal changes or occupancy. Higher speeds increase coverage but may require greater spacing to avoid excessive air velocity at occupant level. Lower speeds are used for destratification or gentle air mixing during cooler months.

Safety, Certifications, and Warranty

This HVLS fan includes a NEMA 1 wall-mounted VFD controller with integrated safety disconnect. Safety features include a safety cable, hub clips, hub retainer, dual-method fastening, and sprinkler shut-off. The fan is designed for compliance with standard commercial and industrial safety practices.

The product is covered by a 5-year warranty. All components are engineered for durability and safe operation in large-scale ventilation applications.

Frequently Asked Questions

Q: What is the minimum ceiling height required for this fan?

A: The minimum recommended mounting height is 15 feet from the finished floor to the fan blades.

Q: How large of an area can a single fan cover?

A: One fan can provide effective air movement for up to 19,750 square feet, depending on layout and obstructions.

Q: What mounting options are available?

A: The fan can be mounted to I-beams, Z-purlins, or open joists using the included hardware.

Q: Can the fan speed be adjusted?

A: Yes, the wall-mounted VFD controller allows variable speed adjustment to match ventilation needs.

Q: What voltage options are supported?

A: The fan operates on 208V-240V, 110V-120V, or 460V-480V, single or three-phase power.

Q: How should fans be spaced in a large facility?

A: Spacing depends on ceiling height and airflow requirements, but one fan typically covers up to 19,750 square feet. Overlapping coverage may be used for uniform air movement.

Application Questions and Clarification

Q: Is this fan suitable for use in aircraft hangars?

A: Yes, the fan is commonly installed in aircraft hangars with adequate ceiling height and structural support.

Q: Can this fan be used in agricultural buildings?

A: The fan is suitable for agricultural building ventilation where ceiling height and mounting structure meet requirements.

Q: Is this fan appropriate for gymnasium ventilation?

A: Yes, it is frequently used in gymnasiums with high ceilings to improve air circulation and comfort.

Q: What are the clearance requirements for safe operation?

A: Minimum ceiling clearance is 3?4 feet above the fan, with at least 2 feet of horizontal clearance from obstructions.