CENTRIC AIR 4.0 Whole House Fan (Cools Home up to 4400 Sq. Ft.) 3921 CFM (HVI-916) | ENERGY SAVER 623 WATTS HIGHLY RATED GERMAN FAN MOTOR (Click to View Details) (Call for FREE Expert Advice & Additional Discounts) FREE SHIPPING

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  • Centric Air offers an advanced 2-Speed wireless controller using built-in timer or by temperature.  The wireless remote sits on a bedroom table or used anywhere in the home.  (Optional)
  • Wall Control. Temperature, Timer and Speed Control (Hi/Low)
Wall Control With 50' Cable.  Temperature, Timer and Speed Control (Hi/Low).  Improves Comfort and Energy Efficiency.  Plug & Play Connection.  Eliminates Installing and Wiring Line Voltage Timer and Speed Switch
  • Centric Air offers a Cold/Hot Weather R-50 & R-10 Power Damper. Can be used in either a ceiling or vertical wall.  (Optional) Call 888-849-1233 for details
  • Designer High-flow grille 16" X 30"  is designed to minimize noise from air movement (Included)
  • Single Speed Remote (Included)
  • 100% Money Back Guarantee
  • Assembled in the USA
  • 15 Year Limited Warranty
MSRP: $1,995.00
Now: $1,629.00
Was: $1,799.00
— You save $366.00


Centric Air 4.0 Whole House Fan 3921 CFM (HVI-916) to 4400 Sq. Ft. | $25 OFF COUPON J9C7W6T6DT

The Highest Quality & Quietest Whole House Fan on Market with 15 Year Warranty | 5-Blade Computed Balanced German Motor | Comes with New R-5 Energy Star 1" Poly Foam Damper (Optional 2-Speed Remote with Timer or Wall Switch | R-10 or R-50 Cold Weather Power Damper for Ceiling or Wall Mount) Call for FREE Expert Advice & Additional Discounts | FREE SHIPPING

CentricAir 4.0 whole house fan delivers a powerful 3921 CFM (HVI-916). It requires about 5.0 sq. ft. of net free attic ventilation and costs about $0.10 per hour to operate. It uses 623 WATTS of power and is designed to cool 2-story homes up to 4400 sq. ft. and 1-story homes up to 3000 sq. ft.

CentricAir whole house fans consist of a German engineered fan motor which is 30% more powerful and uses 1/3 less electricity than other whole house fan motors. These high efficient motors come with a 15-year guarantee and are rated for 40,000 hours of operation.

Included with the system is a R-5 Energy Star 1" Poly Foam industrial grade back-draft damper, sound absorbing acoustical duct-work, custom high airflow grill, on/off remote control or wall switch/timer and all necessary hardware. Also available with select CentricAir products are our exclusive two-speed remote control with timer and cold climate damper. (See included & upgrade options below)

Centric Air German Engineered Whole House Fan Motor



Included (Control & Damper)
Industrial grade gravity fed back draft damper requires no power and now comes with all CentricAir whole house fans. The gravity damper is designed keep attic air from entering the living space when the whole house fan is not in use.
Single Speed Remote Control
Our Wireless Single speed remote control is available for FREE with all CentricAir whole house fans. It allows you to operate the fan up to 100 feet away. Make your whole house fan more convenient to use and eliminate the need to cut holes and run wires down the wall with a wireless remote control.


Single Speed Wall Timer
Single Speed Wall Timer
The Single Speed Timer allows you to operate the fan on high speed and also choose how long to run your fan (1, 2, 4, 8 hours or HOLD).

Upgrade Option



Two Speed Wireless Remote with Timer & Temperature Control  |  Smart Wireless Controller Instruction Manual 

Centric Air offers advanced 2-Speed wireless controls for it's 1.5, 2.0, 2.7, 3.4, & 4.0 whole house fans using built-in timer or by temperature.  The wireless remote sits on a bedroom table or used anywhere in the home. Improves Comfort and Energy Efficiency using Temperature Control. Never over cools the home and eliminates homeowner having to get up to adjust a timer. Never wastes energy because fan only runs when needed. Simple and Fast Installation – Eliminates wiring and installing a timer and speed control switch. Features plug and play connection. Fan plugs into side of controller box and controller box plugs into outlet in attic. Easy install. 
This remote will Operate:  "Fan alone" or "Fan & R-10 or R-50 Power Damper". 
Two-Speed Wall Switch & Timer
2-Speed Wall Switch with Timer
Our wall mounted two speed switch & timer lets you set the speed of your fan and choose when it will shut off.
Cold Climate Damper (Ceiling or Wall Mount)
Cold Weather Damper R-10 & R-50
Designed for cold climates, the Cold Climate Damper (available with 2.7, 3.4, & 4.0 models only) is powered by a heavy-duty actuator that is tested to 60,000 cycles. The damper door is insulated to R-10, (upgradable to R-50), to help ensure an air tight seal whenever your whole house fan is not in use. The damper can be installed vertically or horizontally. 

3921 actual CFM (max); 2184 CFM low speed


Fits in between 16" or 24" on center joists


120 VAC, 60 Hz

Unit weight

64 lbs total

Damper box size

28" × 14" × 13.75" (L × W × H)

Grille size (outer)

16" x 30"

Required attic venting

5.0 sq. ft. net-free

Rough opening

14" × 28"


Low profile, hi-air flow, cube-core aluminum (white)


20-inch, industrial-grade motorized impeller


Remote control or wall switch


R-5 or R-10 (cold weather damper ) or R-50 (extreme cold weather damper)

Attic seal

Industrial-grade maintenance free damper


49 Decibels (dBA); 47 dBA low speed


6.13 CFM/Watt (max)

Energy use

640 Watts


15 year limited fan motor warranty. All other components and electrical parts are warranted for 1 year from date of purchase. Warranty excludes batteries.

Control Choice of:
  • Wired 1 Speed Wall Timer – Compatible with Back Draft Damper
  • Wired 2 Speed Wall Switch with Timer & Temperature – Compatible with All Dampers
  • Single Speed Smart Wifi Plug – Compatible with Back Draft Damper
  • Wireless 1 Speed Remote Control – Compatible with Back Draft Damper
  • Wireless 2 Speed Remote Control with Timer & Temperature – Compatible with All Dampers
Damper Choice of:
  • R5 Back Draft Damper
  • R10 Cold Weather Damper
  • R50 Extreme Cold Weather Damper
Optional Wall Mount Adapter Choice of:
  • No Adapter required for ceiling installation
  • Vertical Wall Mount Adapter for Wall Installation

Due to product improvements and equipment upgrades, performance ratings and specifications are subject to change without notice.

Features  & Benefits
Exceptional Power, Extremely Energy Efficient!

The Centric Air 4.0 is a high quality, very powerful and ultra quiet alternative cooling solution. It uses a German engineered industrial grade fan motor that can provide 30% more power while using 1/3 less energy as compared to other industry standard fans.

Extreme Engineering - Built To Last, Extremely Low Noise

These high-end industrial grade motors are built to last and are rated for approximately 40,000 hours of operation. The noise level is also really something to hear – or, actually not hear. At a very quiet 49 dBA on high, the 4.0 is very quiet. Every aspect of this system is built to a rigorous specification suitable to demanding industrial applications and is completely maintenance free.

Two Speed Wireless Remote Control with Timer

The optional two speed remote control with timer is our most versatile control which features an LED display and 5 Timer Functions 1, 2, 4, 8 hours or ON. On high speed the system operates at a powerful 3921 CFM. Set to low speed the system provides a comfortable flow of air while maintaining a whisper quiet noise level.

Heavy-duty R-5 Energy Star 1" Poly Foam Maintenance Free Damper

A fundamental problem with traditional whole house fans was air leakage between the attic and living spaces. This could result in dirty attic air entering your home. The 4.0 takes care of this problem with an industrial-quality damper that is thermally insulated and maintenance free. Silicone seals are provided to ensure sealing longevity; they also provide phenomenal resistance to weathering and changes in temperature. Silicone seals have an approximate service life of 30 years and remain flexible down to -40 degrees F/C.

Low Profile - High Air Flow Register

The Centric Air 4.0 comes with a high air flow register that reduces air movement noise through the register. These high-performance grills look great too, so your system looks as inconspicuous as it sounds.

Maintenance-Free Operation

The German-engineered sealed motor and damper never requires lubrication or maintenance of any type.

FREE SHIPPING | Call 888-849-1233 for FREE Expert Advice & Discounts

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28 Reviews

  • 5
    High End Ventilation | Great Service

    Posted by Mike C on 11th Jun 2023

    Centric Air is the highest quality fan that a researched and when I installed it meet my approval. Mike at Factory Fans Direct is a great guy. Call me and he will help you. 5 Stars

  • 5
    The Best Fan on the Market | 5 Stars

    Posted by Bil J on 22nd Jan 2023

    We have a 3000 sq ft home in Los Angeles that we were looking to cool off. A friend of mine got a Quite Cool WHF and I was going to order one of those until I read about Centric Air. I watched a few videos and spoke with Mike and soon realized the Centric Air has a better motor, fan blade, and duct system. I installed it myself without too much hassle. We have plaster and lathe so I had to use a multi tool to cut the hole in the ceiling. We got the 4.0 fan and love it! We have three dogs so we love that it brings in fresh air all night. Highly recommend it for everyone with an attic. Thanks

  • 5
    Loyal Customer | 5 Stars

    Posted by Mary M on 4th Sep 2022

    As a loyal customer backed by a great product- I have used Centric Cool Fans in my last two homes. I currently live in SOCAL and the heat is intense but at night the air is cool outside and once the fan is turned on the entire house feels cool along with fresh air. The fan is very appealing and has a streamline look. I highly recommend using this company as they back their product and I stand by it!!

  • 5
    The Fan and Service is amazing!

    Posted by Andy J on 23rd Aug 2022

    The fan is amazing! And working with the Factory Fans Direct could not be easier. I bought the top of the line fan and never looked back. My wife and I both agree we should have done this years ago. Had my fan for over a year and it still makes me happy. No more sweating at night. Do yourself a favor and get the fan from Factory Fans Direct. They are great and not some huge faceless company!

  • 5
    Best Fan | It is a no brainer

    Posted by Bob G on 10th Aug 2022

    It is a no brainer. I recently moved and started checking my electricity usage. My AC was using an insane amount of energy, driving up my bill so I started searching for alternatives to a new $20K HVAC upgrade. I was referred to Factory Fans Direct by a friend and got the 4.0. What a difference! We have had it for two weeks and have not had to use the AC once. My Electric usage dropped dramatically. This uses less than 1KWh where my AC uses greater than 12 KWh each hour. It is also great at night to have a cool breeze coming in with fresh air. It is like you are at the beach. Install was fast.. Definitely, go with the two speed remote with timer over the wall switch.

  • 5
    The Best Whole House Fan | Whole different level

    Posted by Steve Z on 30th May 2021

    We had other whole house fans in our past homes and were not satisfied with them. Centric Air is at a whole different level of whole house fans, with a German motor and being whisper quiet and energy efficient. 5 Stars

  • 5
    Buy a Fan | Tell Friends | Receive $50 Checks

    Posted by Linda P on 28th Jun 2020

    My husband and I are Real Estate brokers and wanted a quality whole house fan for our home and our rental properties. We talked with Mike at Factory Fans Direct and he gave us expert advice and a great deals on the Centric Air whole house fans. He had a list of qualify installers who did a wonderful job and we are very happen with our choice. Mike also told us that if we liked our fan and we did to tell our friends, neighbors and clients. We did and referred many customers to Mike and get weekly $50 checks. Best fan | Tell Friends | Receive checks | Such a deal..

  • 5

    Posted by Dave L on 4th May 2020

    It sucks...the hot air out of the house!
    Wife and I have enjoyed the cool breeze and not running the A/C. It is really quiet.

  • 5
    Outstanding Whole House Fan

    Posted by Tony L on 18th Jan 2020

    We installed the Centric Air 4.0 in our home last summer and what a relief. Hot air on second level was removed and quiet operation. Very well constructed.

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