HV3400 R38 2 Speed Whole House Fan With Remote Control

(5 customer reviews)


The HV3400 will cool your home and can improve air quality by exhausting hot, stuffy air and indoor air pollutants through attic vents and replace it with fresh air. The HV3400 moves up to 3400 CFM of air. The unit is equipped with unique R38 insulated doors that open and close automatically.

FREE SHIPPING (to the 48 contiguous states)

Current Lead Time is 1 week.

Ships to Continental US addresses only


SKU: TTi-HV3400R38


HV Whole House Fans

The HV3400 R38 Whole House Fan easily mounts in the attic on 16 or 24 inches on center joists and is operated by a  Remote Control included with your purchase.  This 3400 CFM* fan quickly circulates air and cools your home whenever the outdoor air is cooler than the indoor air. The HV3400 R38 Whole House Fan operates at two speeds to exhaust hot air, indoor air pollutants, allergens,  moisture, and odors out through attic vents or gables while pulling cool, fresh air into the home through the open windows. The air exchange naturally cools your home and can improve indoor air quality.

Like all Tamarack HV Series Whole House Fans, the HV3400 R38 Whole House Fan features a unique self-sealing door design. The unit includes R38 insulated doors that open automatically when the fan is operating and seal shut automatically when the fan is off. The insulated door design prevents cool air from escaping your living area to the attic. The insulated doors also prevent heat loss through the attic during the cooler months.

Installing an HV3400 R38 Whole House Fan reduces energy consumption and saves money. Tamarack’s Whole House Fans use 10% of the energy of a central air conditioning system thus cooling your home while reducing your energy bill.

As a result of the high quality of this product and ease of installation, the Tamarack HV fans have been featured twice on the popular home improvement show “Ask This Old House”.  A clip of the episode can be viewed here.


  • Two Speeds-capable of moving air at 1,900 CFM or 3400 CFM (cubic feet per minute)*.
  • Only whole house fan brand with R38-insulated self-sealing doors (also available in R50 insulation).
  • Quick and easy installation.
  • Energy efficient.
  • Optional hardwire operation**.


  • Two Remote Controls
  • 24.5″ x 16.5″ white ceiling grille.
  • 6 ft. power cord – 3 prong.
  • 3-year limited warranty  – extended warranty available.


  • Can reduce energy costs by using the AC less frequently.
  • Tested to HVI-916 @ 2852 CFM for CA only.
  • Listed in the California Energy Commission Modernized Appliance Efficiency Database.

*CFM rates measured in a controlled test environment. Your results may vary due to building construction.
**Use of any type of control other than those we recommend will void the product warranty. Recommended controls for hardwired fans include single pole single throw wall switches or spring-wound mechanical timers.

Current Lead Time 3-5 days

Product Specs

Ghost HV3400 Ductless Whole House Fan Product Specifications


HV3400 Manual

5 reviews for HV3400 R38 2 Speed Whole House Fan With Remote Control

  1. Scott Peckham

    Tamarack Technologies has Great Customer Service!

  2. Russell

    Great deal on the fan and super follow up. Cool house down at night, lock it up an AC doesn’t click on until late afternoon. Thanks again to Nelson and Lindsay.

  3. John K

    I replaced an old 30″ whole house fan with only aluminum gravity dampers to seal it from the attic, The hallway was cold in the winter and you could feel the heat radiating from louvers in the summer. Attic temps range from -5′, winter, to 135’F in the summer.
    The new fan has been in for a month now, works perfectly, low speed is quiet, dampers open and close and seal very well, no more cold drafts in the Hallway. The remote control that is included with the Whole House Fan purchase is a nice feature.

  4. David

    we put an Hv3400 in the attic 4 years ago to cool down the second floor in the Canadian summer.
    open the back french doors and light it up on high and cool the entire house down 10 degrees at night in 30 minutes
    the attic gets chilled as a bonus and the air is changed out in the entire house to fresh oxygen 8 months out of the year.
    u gotta luv this monster air mover.

  5. Todd Saddler

    We used to open the windows at night and close them by day, but on nights where the temperature stayed above 70F the house never really cooled down much. We put the Tamarack in last summer. It was straightforward to install and worked correctly right from the start. Solid, well insulated, airtight. We decided we won’t be needing an air conditioner since we have this.

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