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Thread: small attic fan

  1. #1
    Join Date
    Feb 2001
    Posts
    447

    Question small attic fan

    Tamarack Technologies has discontinued their HV-700 insulated attic fan. I would rather call it a whole house fan, but it was so small that it could only really vent single rooms. Does anybody know of a similarly small (700 CFM or less), insulated attic fan?

  2. #2
    Join Date
    Jan 2008
    Posts
    89
    There are a couple of companies making similar products to the HV series, but I'd probably go for an HV1000 if you've been satisfied with the HV-700.

    I have an HV1600 and its okay. Pretty low airflow on low, but I wanted a low-and-slow fan to run all night when its cooler in the summer. The high mode does move air but wow is it loud. I really like the automatic opening insulated doors. Not as energy efficient as I thought it might be.

    If you're looking for smaller scale and less expensive, a low sones high flow or multispeed bathroom type fan with a piece of r-8 duct and an insulated wall cap can move similar amounts of air to the hv-700 with a similar noise profile and be placed inconspicuously.

  3. #3
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,295

    Reduce Run Time

    Quote Originally Posted by charles2 View Post
    Tamarack Technologies has discontinued their HV-700 insulated attic fan.

    ... but it was so small that it could only really vent single rooms.

    Does anybody know of a similarly small (700 CFM or less), insulated attic fan?
    No, but you can run a

    http://www.wholehousefan.com/HV1000brochure0106.pdf

    2/3rds of the time of an HV-700.
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

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