Vostermans Ventilation MultiFan V-FloFan – Hanging Set

The Vostermans Ventilation MultiFan V-FloFan Hanging Set is a vertical-airflow circulation fan designed for greenhouse and indoor growing environments. It directs airflow downward through the crop canopy, reducing humidity pockets and evening out temperature distribution across the growing zone — helping plants develop more uniformly from seedling to harvest.

V-FloFan Hanging Set Specifications

The V-FloFan Hanging Set ships ready to suspend from overhead structures in a greenhouse bay or indoor grow space. The table below lists confirmed specifications drawn from the manufacturer data and supplier listing.

Specification	Value
Brand	Vostermans Ventilation
Product Series	MultiFan V-FloFan
Configuration	Hanging Set
Voltage	120V
Weight	3.00 lb (1.36 kg)
Airflow Direction	Vertical (downward through crop canopy)
Power Cord	Not included for part #737502 and #737504
Supplier SKU	VOSZA182

Why Choose the Vostermans MultiFan V-FloFan

The V-FloFan addresses a specific gap in greenhouse and controlled-environment agriculture: uneven air distribution within the crop canopy. Standard horizontal fans push air in one direction along a single plane, leaving areas of stagnant, humid air where fungal pressure builds. The V-FloFan approaches this differently.

• Vertical airflow design: The fan is engineered to direct air downward through the plant canopy rather than horizontally across it. This creates a more uniform microclimate at plant level rather than just moving air above the crop.
• Humidity management: By continuously circulating air through the canopy, the V-FloFan reduces the localized pockets of high humidity that promote mold, mildew, and Botrytis — a concern in dense plantings and humid climates.
• Heat distribution: Greenhouses accumulate heat near the roof and at certain points in the structure. Vertical circulation pulls warmer upper-layer air downward and mixes it with cooler crop-level air, reducing temperature stratification.
• Energy efficiency: The MultiFan series is designed with commercial energy budgets in mind. Circulating air effectively means you can maintain target conditions with less heating, cooling, or dehumidification running time.
• Ease of installation and maintenance: The hanging set configuration is ready to mount on overhead rails or trusses with no complex brackets required. The unit is also straightforward to remove for cleaning or service.

Best Uses for the Vostermans MultiFan V-FloFan Hanging Set

The V-FloFan Hanging Set is suited to environments where vertical air mixing is more useful than horizontal air movement. Growers who already have perimeter fans or HAF (horizontal airflow) systems often add V-FloFan units to address canopy-level microclimates that their existing fans miss.

• Commercial greenhouses: Designed for greenhouse use, the V-FloFan works well in multi-span structures where overhead suspension is practical and where large plant volumes make uniform conditions critical to consistent crop quality.
• Propagation and cloning areas: Young cuttings and seedlings are especially sensitive to humidity fluctuations. Gentle vertical airflow reduces the wet-leaf period that promotes damping off without subjecting fragile plants to harsh direct airflow.
• Dense canopy crops: Tomatoes, cucumbers, peppers, and other vining crops that form thick canopies create internal microclimates that standard fans struggle to reach. The V-FloFan’s downward-directed flow penetrates this zone.
• Indoor grow rooms and vertical farms: Wherever rack or table systems stack plants at multiple heights, overhead vertical fans help maintain more even conditions across all levels — reducing the management overhead of adjusting individual level fans.
• Post-irrigation drying: After overhead irrigation or heavy foliar feeding, the V-FloFan accelerates drying on leaf surfaces, reducing the window of leaf wetness that leads to fungal outbreaks.

For large grow rooms that also use pedestal-style fans for horizontal airflow, pairing V-FloFans with a unit like the Active Air HD pedestal fan gives you both horizontal and vertical coverage across the space.

Compatibility

The V-FloFan Hanging Set is rated for 120V operation, making it compatible with standard North American electrical infrastructure. It can be connected to a timer or environmental controller to run on a schedule or in response to humidity or temperature triggers — though the fan itself does not include a built-in controller.

The hanging set mounting hardware is designed for greenhouse overhead structures including Venlo-style trusses, gutter-connected bays, and standard grow-room unistrut or racking systems. The unit is light enough (3 lb) that most overhead anchor points used for irrigation lines or lighting are suitable, though you should verify the load rating of your specific mounting hardware.

The V-FloFan is suitable for a wide range of crops as noted in the manufacturer documentation — vegetables, herbs, flowers, and soft-fruit crops grown in protected environments. It is not rated for outdoor unprotected use.

Note on power cords: Part numbers #737502 and #737504 do not include a power cord. If your configuration corresponds to these part numbers, ensure you have a compatible cord before installation. Part #737500 (the base Hanging Set) includes a cord. Check the part number on your order confirmation if you are unsure.

If you are managing humidity more broadly in your space, pairing the V-FloFan with a dedicated dehumidification system provides more complete humidity control. The Ideal Air Pro Series dehumidifier condensate pump is one accessory to consider when building out a full humidity management setup.

Usage Guidelines

Getting the most from a vertical-airflow fan depends on placement and spacing. The following guidelines reflect the intended use described in the manufacturer documentation.

• Mounting height: Suspend the fan above the crop canopy so airflow is directed down into and through the plant zone rather than into the space above. For most annual vegetable crops, this means hanging the unit 6–12 inches above the expected canopy top and adjusting as crops grow.
• Fan spacing: In commercial greenhouse bays, multiple V-FloFan units are typically spaced evenly along the length of the bay to cover the full growing area. The specific spacing depends on fan coverage area and crop type — consult Vostermans technical documentation for spacing recommendations for your crop and bay width.
• Operating schedule: Many growers run circulation fans continuously during the photoperiod and reduce or stop airflow during the dark period to conserve energy. In high-humidity environments or during heavy production, continuous operation may be preferred.
• Adjustment during growth stages: During propagation and early vegetative stages, keep airflow gentle to avoid excessive transpiration stress on young plants. As the canopy fills and plant mass increases, stronger airflow is typically better tolerated and more beneficial.
• Combination with dehumidification: The V-FloFan reduces surface condensation and improves air mixing, but is not a replacement for active dehumidification in environments with persistently high relative humidity. Use it as part of an integrated climate management system.

How to Install the V-FloFan Hanging Set

The V-FloFan is described by the manufacturer as easy to mount and easy to maintain. The hanging set comes with the hardware needed to suspend the unit from an overhead structure. The following steps describe a typical installation.

1. Confirm your part number and power cord: Before installation, identify your part number. If you have part #737502 or #737504, you will need a separately sourced power cord rated for 120V before the fan can operate.
2. Choose your mounting location: Select an overhead mounting point — greenhouse truss, unistrut channel, or equivalent structural member — directly above the area of the crop you want to circulate. Verify that the anchor point can support the fan’s weight (3 lb) plus any dynamic load from the hanging hardware.
3. Attach the hanging hardware: Connect the included hanging set hardware to the overhead structure. Typical setups use a hook, chain, or cable. Ensure the connection is secure and that the fan will hang level so airflow is directed straight down.
4. Hang the fan unit: Attach the fan to the hanging hardware. Adjust the suspension length to achieve the desired height above the crop canopy.
5. Route and connect the power cord: Route the power cord away from the fan blades and any water or irrigation lines. Plug into a grounded 120V outlet. If connecting to a timer or environmental controller, make that connection before powering on.
6. Power on and verify operation: Switch on the fan and confirm normal operation — steady airflow directed downward with no unusual noise or vibration. If vibration is present, check that the hanging hardware is secure and that the fan is hanging level.
7. Adjust height as needed: Monitor crop response over the first week of operation. If outer leaves show signs of airflow stress (curling, excessive drying), raise the fan slightly. If airflow is not reaching the lower canopy, lower the fan.

Sources & Further Reading