QuietCool QC CL-4700 Classic Whole House Fan

September 20, 2019

QuietCool QC CL-4700 Classic Whole House Fan:

Setting up the grow room’s proper ventilation system is one of the crucial steps in ensuring a successful indoor grow. If done right, this system should effectively remove hot, stale air and supply fresh air to the environment, which in turn, provides CO2 to the crops without CO2 enrichment systems.

These ventilation systems can be as basic as a few fans or as elaborate as a series of air conditioners, dehumidifier, blowers, and atmospheric controllers. Despite what ventilation system is utilized, the purpose remains the same: to keep humidity and temperature in the space within the preferred consistent range.

In terms of whole house fans, QuietCool is one of the top brand choices all across America. QuietCool CL-4700 allows cooled outdoor air in the grow space through the home, windows, and attic space. It approaches home ventilation in a different way, thoroughly ventilating and cooling both the home and attic.

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Intake and Exhaust Fans

QuietCool QC CL-4700 Classic Whole House FanIntake and exhaust fans are part of any ventilation system, regardless of how basic or complex the set up is.
The intake fan’s primary job is to draw fresh air from the outside, may it be outside the house or just a space outside the growing area. Growers typically filter the incoming air using HEPA filters or nylon stockings. This is to reduce the likelihood of insects or pathogens contaminations.

On the other hand, the exhaust fan’s purpose is to remove the heated, stale air from the grow space. Also, it removes odors as the air is exhausted when connected to a carbon filter.

In most cases, these fans are set up to work in conjunction with each other. The exhaust fan is normally rather larger than the intake fan to ensure a slight negative pressure. This is to make sure all odors are forced out through the exhaust when exiting the grow area.

Both fans can be connected to thermostatic controls or set up on timers. In terms of controls, Thermostatic controls offer more since growers can set the preferred temperature and the fans automatically turn on or off as needed.
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QuietCool QC CL-4700 Classic Whole House FanQuietCool products are assembled and manufactured in Temecula, California. The company’s goal is to build the most energy efficient and quietest whole house fans on the market. The entire QuietCool team is dedicated to achieving these goals while continually pursuing innovation in the modern “green energy” industry.

In 2017, the company introduces the new 5.5 and 5400 model QC whole house fans to bridge the gap between the 4.8/4700 and 6.5/6400 models.

QC CL-4700 Classic Whole House Fan

The original classic line of QuietCool Advanced Whole House Fans offers the best initial value in the Classic Series. these fans were in the first line of QuietCool that was introduced in 2003.

This classic series is a consumer line very similar to the QuietCool Trident Pro series, with the same type of permanent split capacitor motor. This motor makes phenomenal reliability with maximum energy efficiency possible.

The Classic Whole House Fan QC CL-4700 can be set up by the user without the need for professional installers. It is available at growers House for $1,044.00

Patented Innovative Design

To help neutralize the noise and sound vibrations, this line of whole house fan features the patented, self-contained acoustical duct system that hangs in the attic, attached to an R5 damper box. The zero noise vibration allows the system to be used in the home with whisper quiet operation and complete discretion.

Damper System with R5 Insulation

The barometric pressurized gravity dampers of the included damper system ensure no heating or cooling is lost between the attic and home. Most traditional whole house fans that have old-style shutters with zero R-value that tends to lose cooling or heating in the operation process.

Permanent Split Capacitor Motor

The permanent split capacitor efficiency motors are standard in all QuietCool Classic Line fans. These motors offer enormous value with above-average efficiency. These Classic whole house fans operate on low amperage and low wattage. And due to its motor’s high efficiency, A/C related electricity costs can be potentially slashed by up to 50 to 90 percent.

Industry Leading 10-Year Warranty

With QuietCool Classic Whole House Fans, users can be confident that these fans will operate at its fullest potential for a decade and likely even longer with its industry-leading 10-year warranty. The company will completely cover the repair or replacement of any parts that make up the QuietCool fan motor assembly for an entire decade.

Tech Specs:

  • Airflow: High 4672 CFM / Low 3586 CFM
  • Energy Efficiency: High 519 Watts / Low 491 Watts @ 7.91 / 7.30 CFM/Watt
  • Grille: 16” x 32” inches
  • Attic Venting Required: 6.2 Sq. Ft. net free area
  • Covers up to: 2210 sq. ft. / Medium Homes
  • Weight: 58 lbs.
  • Voltage: 120v

Buy QuietCool QC CL-4700 Classic Whole House Fan Click Here!

There are many products related to growing marijuana; so many that we needed a dedicated person to review them all. Anthony is that person. If there’s a product that will help you grow marijuana, he’s likely tried it or at least heard of it. More... [read more]


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  1. By Ray ,17 Feb 2020
    I'm looking for activated charcoal filter,fan and duct set up.

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