HV1000 Whole House Fan


The HV1000 Whole House Fan provides an energy efficient solution to cooling down your home and avoid using the AC when the outdoor air is cooler than the indoor air.  Circulating 1000 CFM, this fan can help improve indoor air quality by bringing in fresh air while exhausting stale air. Choose whether you want a remote control and choose R38 or R50 insulated doors.  A good solution for homes under 1600 sq. ft.

Current Lead Time is 1-2 Weeks

Ships to Continental US addresses only

Canadian Customers Please Call 774-678-4433 To Order Our Products!

Want a Remote Control? Available Here 
Want a Sound Muffler? Available Here

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The HV1000 Whole House Fan  easily mounts in the attic on 16 or 24 inch on center joists and is operated by a SPST wall switch, spring-wound timer or a Remote Control.  The fan can be installed vertically or horizontally. This 1000 CFM* fan quickly circulates air and cools your home whenever the outdoor air is cooler than the indoor air. The HV1000 Whole House Fan operates at one speed 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 the indoor air quality.

Like all Tamarack HV Series Whole House Fans, the HV1000 Whole House Fan features a unique self-sealing door design. The unit includes R38 or R50 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 HV1000 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.


  • Quickly circulates air at 1,000 CFM* (cubic feet per minute) using only 63 watts
  • Only whole house fan brand with insulated self-sealing mechanical doors (Available in R38 or R50 insulation value)
  • Easily installed vertically (inside attic wall) or horizontally (inside attic floor)
  • Energy efficient & maintenance-free
  • Controlled by SPST wall switchspring-wound timer**, or Radio Frequency Remote Control (not included)


  • Interior ceiling grille.
  • 3-year limited warranty – extended warranty available.
  • Unit is hard wired during installation.
  • Can reduce energy costs by reducing the need for AC.
  • Tested to HVI-916 @ 821 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.
Recommended controls for hardwired fans include single pole single throw wall switches or spring-wound mechanical (non-digital) timers. Not included with purchase. The use of any type of control other than those we recommend will void the product warranty. 
UL Component UL Listings; E115252, E170149

Product Specs


Installation Video:

3 reviews for HV1000 Whole House Fan

  1. Ryan

    Our HV-1000 arrived in perfect condition this week. The actual installation was duck soup thanks to Tamarack’s fine on-line documentation, which permitted me to complete all framing and rough-in wiring in advance.

    I did encounter an attic space issue and thought potential customers might be interested in my devised solution, which worked perfectly.

    I can’t be the first customer to have hit this snag: At our desired location, I did not have an unobstructed joist space into which to fit the fan. Because I’m a DIYer, my knee jerk reaction was that the HV would not work for us. But after thinking it through, I worked out the attached solution.

    The solution would probably abundantly obvious to a contractor, but it struck me that other DIYers might walk away (as I nearly did) because of space restrictions that could be resolved with the alternative framing scheme.
    We’ are delighted with our new HV. Looking forward to Fall when it will be cool enough in Austin to enjoy it!


  2. Ryan

    We replaced an old-style fan and have to say these are simply amazing. Way better than the old-style fans, much quieter and install was nowhere near as complicated.

  3. Ryan

    I have owned an HV1000/HV1600 whole house fan since the mid-90s. I installed it myself. It has never failed me. I have chosen to purchase a replacement as it is only beginning to exhibit some signs of all the service it has flawlessly provided. The efficiency of these units is self-evident. I have avoided the cost of buying air conditioning for all these years. A great product!

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