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Cool Components Inline Duct Fan - 4" 1-VS-IDF-4
Cool Components Inline Duct Fan - 4"
Cool Components Inline Duct Fan - 4'
Retail Price: $75.00
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Item Description

Manufacturer: Cool Components
Part#: VS-IDF-4

This is a moderately aggressive residential unit for venting a variety of applications related to home technologies.  This is a 4" version which 4" ducting is perhaps the most common for technology related applications and can be used with non-insulated thin walled ducting to fit into 2x4 walls.  This size provides a nice balance of significant airflow and still the convenience to fit into most areas.

Due to the trend of addressing cooling and venting earlier in projects, during pre-construction/renovation, Cool Components has greatly expanded their line of duct fans.  Using duct fans is superior in most respects and primarily because the fans are quieter, move more air, very efficient and are simply out of the way since they will installed usually in an attic, crawl space, or basement.  With proper planning they should also be easily serviceable. Duct fans, as the name implies, utilize ducting to connect the fan unit to the areas where wish to remove air (intake) and directs that air to another area or preferably, to the HVAC return vent (exhaust).  Generally the inline duct fans feature multi-speed motors and are powered with 110/120 current (220V versions are available via special order).   

There are several units available ranging from Residential to Professional versions with the primary difference being the residential housings are made from ABS while the Pro versions have a Polypropylene housing and come with optional EC (Electronic Controllable) fan motors.  This is the latest advancement in inline duct fans as it allows high voltage fans to be controlled with low voltage controllers.  Traditionally high voltage fans were only reliably controlled using 'step' control meaning there were 3 or 4 speeds that increased in a progression that usually left you hearing each time the unit took a 'step'.  The EC fans provide for a smooth linear progression so the fans start slow and ramps the speed up smoothly as the temperature rises.  As with all of Cool Components products, serviceability is also a key as the fan unit can be separated and cleaned without removing and having to re-attach the ducting.  Then at the end of the life of the fan, it is very easy to swap out the fan also without removing the ducting.  Another staple of these fans and the latest technologies is that the units are very efficient and are also fully recyclable.

This listing is the 4" version which utilizes 4" ducting that will fit in 2x4 walls when using appropriate ducting (insulated duct would not be possible but is also unnecessary in interior walls).  Another scenario is using this product to connect two 3" ducts to a single 4" duct.  This unit is perfect for a variety of duct cooling applications and has semi aggressive and quiet operation.  This unit features a maximum speed of 2750rpm with approximately 100cfm (at max speed) and a noise rating at or below 31db.  The motor utilizes a sealed ball bearing design with an estimated life span of 50,000 hours.  It should be noted that massive airflow (cfm) is not always better.  With electronics the keys are simply adequate spacing of components and then usually just a basic flow or air around the components paying special attention to eliminating any dead/hot spots.  These are areas where air just remains still and not circulating throughout the system.
Please Note:  This fan is designed to be installed in an attic or remote location and has to be connected to ducting for proper air pressure and functionality.


  • Engineered To Efficiently Vent Hot Air in a Variety of Applications 
  • Durable ABS Housing with Detachable Motor for easy Installation and Service
  • Integrated Mounting Bracket for Easy Installation
  • Utilizes 4" Flexible Duct for Intake and Exhaust
  • Pre-wired with a 120 Volt Power Cord for Easy Power Connection
  • IP44 Rated to Resist dust and Minimal Moisture (Resists humidity well)
  • Optional Accessories: Ceiling and Wall Rough-in Boxes, 4" Flexible Duct Tubing...
General Specifications
Dimensions: 29 x W 19 x H 14cm
Construction: ABS Housing
Fan Motor: 2 Speed Motor (L/H)
Duct Size: 4"
Air Flow: Low Speed 78 cfm / High Speed 100cfm
RPM: 2100 / 2600
Noise: 26 / 31db

Power Specifications


Power Connection: Pre-wired 120 Volt Power Cord

Voltage: 120V 60Hz

Current - Amp: .45 / .55A

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