Vostermans Ventilation MultiFan V-FloFan – 120 Volt

The Vostermans MultiFan V-FloFan (120 Volt) is a greenhouse circulation fan engineered to deliver vertical airflow directly onto the crop canopy. By moving air downward at plant level, it creates a uniform microclimate that helps growers manage heat distribution and reduce the effects of excess humidity — improving crop development consistency across the growing area. At 40 lb, the unit mounts overhead within the greenhouse structure and is designed for straightforward installation and long-term, low-maintenance operation.

MultiFan V-FloFan Specifications

The following specifications are derived from the canonical product data and manufacturer product line information. All values are grounded in the supplier listing or product attributes unless noted.

Specification	Value
Brand	Vostermans (Multifan)
Model Line	V-FloFan
Voltage	120 Volt (60 Hz)
Airflow Direction	Vertical — downward onto crop canopy
Weight	40 lb
Primary Application	Greenhouse air circulation and microclimate management
Crop Compatibility	Wide range of crops (greenhouse use)
Power Cord	Not included for part numbers #737502 and #737504

Why Choose the MultiFan V-FloFan

Growers evaluating greenhouse circulation fans typically weigh airflow uniformity, energy consumption, mounting logistics, and crop compatibility. The V-FloFan addresses each of these from a design perspective centered on vertical airflow delivery.

• Vertical airflow at crop level: The V-FloFan is specifically engineered to direct air downward onto the plant canopy rather than horizontally across the space. This means the airflow reaches the plants directly, rather than circulating primarily above them — a meaningful difference when managing canopy humidity and leaf surface temperature.
• Optimized heat distribution: In modern commercial greenhouses, temperature stratification is a persistent problem — warm air rises and collects at roof level while the crop zone remains cooler or experiences pockets of humidity. Vertical circulation disrupts this stratification and promotes a more uniform temperature gradient from floor to ceiling.
• Energy-efficient operation: The V-FloFan is described by Vostermans as an energy-efficient solution for humidity and microclimate management. For operations running fans continuously across large greenhouse areas, lower draw per unit translates to meaningful reductions in operating costs over a growing season.
• Wide crop applicability: The fan is not application-specific — it is designed to work across a broad range of greenhouse crops, making it a reasonable choice for facilities growing multiple crop types in rotation or mixed production environments.
• Simple installation and maintenance: The unit is designed to be mounted within the greenhouse structure and does not require specialized tools or extended downtime for routine maintenance, which matters in commercial production schedules where equipment availability is critical.

Best Uses for the MultiFan V-FloFan

The V-FloFan is designed primarily for professional greenhouse environments. Below are the scenarios where its vertical-airflow design provides the most direct benefit.

• Commercial and semi-commercial greenhouses: The fan’s size, weight (40 lb), and construction suit it for permanent overhead installation in greenhouse bays rather than portable desktop or floor-stand applications. It is appropriate for operations with the structural capacity to support overhead fan mounts.
• Humidity management: In crop environments where transpiration is high — such as leafy greens, tomatoes, cucumbers, or flowering plants in dense plantings — surface humidity on leaves can contribute to disease pressure. Vertical airflow that moves air through the canopy helps reduce leaf wetness duration. Pairing this fan with a capable dehumidifier (such as the Ideal Air Pro Series system) strengthens overall humidity control.
• Heat distribution across large growing areas: In multi-span or wide-bay greenhouses where heating is uneven, multiple V-FloFans positioned at regular intervals help break up stratified air and improve the uniformity of the temperature profile experienced by the crop. This is particularly relevant during winter heating season or in climates with significant day-to-night temperature swings.
• Supplemental CO2 distribution: When CO2 enrichment systems are in use, moving air through the canopy improves CO2 contact with leaf surfaces. The V-FloFan’s downward airflow pattern supports more effective delivery compared to fans that circulate air primarily in the horizontal plane.
• Year-round operation: Because the unit is designed for continuous greenhouse use rather than seasonal or portable deployment, it suits operations that maintain climate-controlled growing conditions throughout the year.

MultiFan V-FloFan vs Similar Products

When evaluating greenhouse circulation fans, buyers typically compare the V-FloFan against horizontal airflow fans (HAF fans) and general-purpose pedestal or wall-mount fans adapted for greenhouse use.

V-FloFan vs. horizontal airflow (HAF) fans: HAF fans are the most widely used circulation method in commercial greenhouses. They are mounted at an angle or horizontally, and move air in a long looping pattern around the perimeter of the house. The V-FloFan takes a different approach: it hangs overhead and delivers airflow vertically into the canopy. In environments where canopy humidity management is the primary concern, vertical delivery can provide more targeted airflow directly to the leaf surface. HAF systems are generally less expensive per unit but require more units and careful positioning to achieve uniform coverage. The right choice depends on greenhouse geometry and the specific climate problem being solved.

V-FloFan vs. general-purpose pedestal fans: A standard pedestal fan, such as the Active Air HD 18-inch pedestal fan, is a lower-cost option suitable for smaller growing spaces, grow tents, and indoor gardens. For a commercial-scale greenhouse where permanent overhead mounting is feasible and a purpose-built solution is warranted, the V-FloFan’s design is more appropriate. The pedestal fan offers portability and lower upfront cost; the V-FloFan offers a dedicated overhead mounting format optimized for greenhouse canopy airflow.

A note on part number variants: The V-FloFan is available in multiple part numbers (including #737502 and #737504), which do not include a power cord. If purchasing one of these variants, budget for a compatible cord or verify your facility’s wiring configuration before ordering.

Compatibility

The MultiFan V-FloFan (120 Volt) is designed for use with standard 120V / 60 Hz electrical supply, which is the standard outlet voltage in North American commercial and residential facilities.

Electrical: The unit operates on 120 Volt power. Confirm your greenhouse electrical panels and distribution circuits are rated for the fan’s draw before installation. For part numbers #737502 and #737504, a separately sourced power cord is required — consult your electrician or Vostermans’ documentation for the correct connector specification.

Mounting: The fan is designed for overhead mounting within a greenhouse structure. The specific mounting hardware requirements and load capacity of your greenhouse trusses or purlins should be verified against the fan’s 40 lb weight before installation. Vostermans provides mounting guidance for the Multifan product line through their documentation and authorized dealer network.

Crop and environment compatibility: The V-FloFan is stated to be compatible with a wide range of greenhouse crops. It is not rated for outdoor, wet-location, or explosive-atmosphere use — it is an indoor greenhouse circulation fan. For humidity monitoring alongside this fan’s operation, a humidity and temperature monitor (such as the Boveda humidity management products for smaller spaces, or a dedicated climate controller for larger operations) can help quantify the microclimate improvements the fan delivers.

Note: Manufacturer-published detailed compatibility data (such as airflow curves, noise levels, and specific mounting hardware part numbers) is available through Vostermans’ technical documentation. See the Sources section below for the manufacturer website.

Usage Guidelines

The V-FloFan is a continuous-run circulation fan intended for permanent installation in a greenhouse environment. The following guidelines cover positioning, operation, and general care based on the product’s design purpose as described in manufacturer documentation.

Positioning: Mount the V-FloFan overhead, centered above the crop rows where uniform airflow is needed most. In wider bays, multiple units spaced at regular intervals across the growing area provide more consistent coverage than a single large unit at one end. The vertical airflow pattern is most effective when the fan is positioned to direct air into the canopy zone rather than the walkways or perimeter areas.

Continuous vs. intermittent operation: In most greenhouse applications, circulation fans are run continuously during growing hours — or even around the clock — to maintain consistent airflow and prevent humidity pockets from forming overnight when transpiration continues but vents may be closed. The V-FloFan’s energy-efficient design is suited to this duty cycle.

Interaction with ventilation systems: Circulation fans like the V-FloFan work alongside (not as a replacement for) the greenhouse’s primary ventilation system. Natural ventilation or powered exhaust fans handle the exchange of inside and outside air; the V-FloFan handles internal air movement and uniformity. Both functions are needed for complete climate management.

Part number note: If you ordered part #737502 or #737504, these variants do not include a power cord. Do not attempt to power the unit without the correct cord and connector. Consult the product documentation or a licensed electrician to confirm the appropriate cord specification before first use.

How to Install the MultiFan V-FloFan

Installation involves overhead mounting and electrical connection. Because the unit weighs 40 lb and requires a 120V power source, two people and basic electrical knowledge are recommended. The following steps follow the generic overhead-mount fan installation process applicable to this product category.

1. Plan your layout: Before mounting, determine the number of fans needed for the growing area, the spacing between them, and which structural members (trusses, purlins, or overhead rails) will carry the load. Each V-FloFan weighs 40 lb — confirm the mounting points are rated for at least twice this weight as a safety factor.
2. Gather materials: You will need appropriate mounting hardware (brackets, bolts, or chain rated for the load), a torque wrench or socket set, a ladder or lift, and (for #737502 / #737504) a compatible power cord. Have a licensed electrician involved if you are hardwiring units into a distribution panel.
3. Mount the fan bracket: Attach the mounting bracket or yoke to the selected overhead structural member. Tighten all fasteners to the torque specifications in the Vostermans installation guide for the V-FloFan. Do not overtighten into hollow-section structural members without backing plates.
4. Hang and secure the fan: With a second person steadying the load, lift the fan unit and attach it to the mounted bracket. Confirm all locking pins or bolts are fully engaged and the unit hangs plumb (vertically level) so airflow is directed straight down.
5. Connect the power: Route the power cord or hardwired conduit to the fan’s electrical connection point. For plug-in models, plug into a grounded 120V outlet on an appropriate circuit. For hardwired configurations, have a licensed electrician complete the termination. Ensure the circuit breaker protecting the circuit is appropriately rated.
6. Test before leaving the area: Power on the fan from a safe position on the ground. Verify it runs smoothly without vibration, noise anomalies, or electrical issues. Check that airflow is directed downward as expected. If the unit vibrates excessively, re-inspect all fasteners and the bracket seating.
7. Document the installation: Record the mounting location, electrical circuit used, and part number for maintenance records. Note whether the unit requires a separately sourced power cord (#737502 / #737504) for future service reference.

Sources & Further Reading