Vostermans Multifan HAF Q 16 Inch HAF Fan for Greenhouses
The Multifan HAF Q 16 is a horizontal airflow fan from Vostermans for greenhouse air circulation. It moves up to 3,294 CFM on a 240V single-phase supply. HAF fans push air along the length of a greenhouse, keeping it moving over and around the crop. That steady movement evens out temperature and humidity from one end of the house to the other. Multifan circulation fans carry an IP55 motor rating against dust and water jets, with class F motor insulation. The housing is white, which reflects light and casts less shadow on the crop below. Wire guards are powder-coated steel built to OSHA requirements. Prepared suspension points let the fan hang from trusses, purlins, chains or cables. Single-phase Multifan motors can run at reduced speed from a TRIAC, SCR or transformer controller. Vostermans covers its HAF fans with a 3-year warranty. The Vostermans model code is T4E40K2M81100.
Laying Out Greenhouse Circulation Fans in a Loop
In a greenhouse, HAF fans work as a group rather than one at a time. Hang a row down one side of the house, all blowing the same way. Run a second row down the other side, blowing back, so the air travels in a loop. Space each fan within the throw distance of the one before it so the airstream stays continuous. Mount the fans above the crop canopy, clear of hanging baskets, beams and anything else in the throw path. Most plants dislike strong air aimed straight at them, so keep the stream over the top of the crop. Hang each fan on chain or cable rated for its weight. Wire the fans to local electrical code, with a disconnect for each fan or fan circuit. A speed controller sized for the combined current lets the airflow be turned down on cool, still days. Switch HAF fans off while exhaust fans or roof vents are ventilating, since they can work against that airflow. Running them through the night cuts damp, still air in the canopy, which helps limit disease pressure. Clean the guards and blades regularly so dust does not cut the airflow.
Key Features
- 3,294 CFM Airflow: Long horizontal throw down the greenhouse.
- 240V Single-Phase: Reduced-speed capable with a TRIAC, SCR or transformer control.
- IP55 Motor: Protected against dust and water jets.
- Class F Insulation: Motor built for warm greenhouse air.
- White Housing: Reflects light and casts less shadow.
- OSHA Steel Guards: Powder-coated, with a 3-year warranty.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Vostermans Multifan |
| Model | HAF Q 16 in |
| Model code | T4E40K2M81100 |
| Type | Horizontal airflow (HAF) circulation fan |
| Fan size | 16 in |
| Airflow | 3,294 CFM |
| Power supply | 240V, single-phase |
| Speed control | TRIAC, SCR or transformer |
| Motor protection | IP55 |
| Insulation class | F |
| Housing | White |
| Guards | Powder-coated steel, OSHA compliant |
| Mounting | Suspension points for trusses, purlins, chain or cable |
| Warranty | 3 years |