Whole House Coolers

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The HV1000™ and HV1600-G™  are an original design in whole house cooling fans.  Engineered to reduce indoor air temperature, the HV pushes the hot air out of the house through the attic and replaces it with cooler outside air.  The HV utilizes twin, high-tech, super efficient fan motors to minimize noise and power consumption.  Our systems have the industry's only automatic door assembly, providing an air-tight seal with an insulating value of R-22.

"Attic Conversion"- HomeTime episode 1713 (part of an 8 part series 1711-1718) continues its rebroadcast through out this season. Check with your local cable carrier for for airdates and times. To locate a syndicate station click here.

• Key Benefits

• Specifications

• Location

• Options

• Product Manual

• FAQ

• Ordering

• HV on TV

• HV1600-G

Radiant heat from the sun beats down on houses all day.  On a hot, sunny day the temperature at the attic floor can reach as high as 140 degrees!  The indoor temperature will often remain higher than the outdoor temperature for several hours.  By pulling heat out of your home, cooler outside air can be drawn into the home.  The heated air is then pushed out of your home through the attic vents. 

Extremely economical, the HV uses about the same amount of electricity as two sixty watt light bulbs.  If you have air conditioning, you can reduce the costs of A/C by as much as 30%.  Motorized, gasketed and insulated doors close to form an air tight seal, preventing heat loss in colder weather.

Quick and easy to install, the fan housing will fit either 16" on center or 24" on center rafters with no rafter cutting!  The low power system can be connected to any available power source.  The grille attaches to the ceiling below for a clean, finished look from the living space. 

◄Discovery Channel Program: "Michael Holigan's Your New House"

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The HV systems require no maintenance.  With its automatic door assembly, there is no need to venture into the attic to shut down your ventilation system during cold weather.  There are no belts to tighten or motors to lubricate.

 A Note on Air Flow and fan sizing.  How much air needs to move through your house to make it cooler?   The following table shows estimates of how quickly all the air will move through different size houses with different size fans. 

But how quickly does the outside air temperature drop?  Remember that a fan cannot bring the temperature in the house down below the outside air temperature.  So a fan like the HV will move the air from the outside, through the house, through the attic and back to the outside.  As it completes that path it will carry heat with it.  A very significant portion of the cooling job can get done by the first 1000 cubic feet of air moved by the fan.

For detailed information on these and other ventilation issues, see  IAQ & Ventilation  & About Overheating .

The energy efficient HV system can reduce your cooling costs by as much as 30%. You may also qualify for a rebate of up to $250 from your supplier of electricity. Read on for details...

Tamarack's Whole House Fan places in the 2003 Cool Products Competition!

Specifications

HV1000™ HV1600-G™ Power Requirement ► 115VAC 60 Hz 115VAC 60 Hz Fans Running ► 116 watts 276 watts Lift Motors Running ► 6 watts 6 watts Open/Close Time ► 30 seconds 30 seconds Air Flow @ .1" SP ► 1000 cfm 900 cfm low/1600 cfm high Sound Level ► 3 sones TBA R Value at Closed Panel* ► 22 22 Rough Opening. ► 14.5" x  22.5" 14.5" x  22.5" Height w/ Doors Open ► 11"@ R22,  12 " @ R38 11"@ R22,  12 " @ R38 Interior Grille ► Return Air  Return Air Grille Color ► White White Weight ► 17 lbs. (shipping 32 lbs.) 21 lbs. (shipping 34 lbs.) Pressure relief required ► 1.5 sq' 3 sq'   *The HV is also available with an insulation value of R-38 and may be ordered with remote control capability. See the options section of this page for further details.   pdf downloads: HV Series (HV1000-HV1600) Manual and Installation Guide HV1000 Product Brochure HV1600 Product Brochure Links: Ordering and Pricing Information  Technical Evaluation (HV1000)

Options

►Remote Control:  The dedicated remote control system offers the user a simplified 110 volt powered remote control.  The system includes a hand-held transmitter, which operates on a 12-volt battery (included),  and a receiver.  The transmitter features a signal operating light that goes on when the ON or OFF buttons are depressed. The controls offer 256 unique security codes that are factory programmed into the system allowing multiple remote control units in the same room or building. The systems operating distance is 60' and is not restricted to "line-of-sight" applications because the system uses radio frequency control. It operates on the R.F. frequency of 303.875 MHz. The control is UL listed and is FCC certified in the U.S. and I.S.C. certified in Canada.

 

►Timer: Operate your HV1000 for a preset amount of time.   Below is a list of the most popular timers used with the HV.  These timers are available at your local electrical supply house or home center.

Rebate Offers

Several electricity suppliers are offering cash back rebates  for the purchase and installation of the HV Whole House Coolers.  Many companies recognize the need to conserve energy and are offering to pay you to help in this effort.  Call your supplier of electricity to see if they are offering rebates.

The HV1600-G (G is for Gold!)

Gold gets better

February 17, 2004

In 2003 we introduced the HV1600-G in response for something a little more powerful and that product received honors from the moment it stepped off the test bench.  It’s not always easy to make a good thing better, but we’ve managed.

The elegant HV1600-G whole house cooler has been revamped and is now sporting dual speed control.  There are times when you want to pull that cool, outside air through your home at 1600 cfm.  But there are also times when you’d rather have a quieter, subtle change happening. That’s now available on the HV1600-G at 900 cfm on low speed.  The enhanced HV1600-G comes with a remote control but it can be hard wired to dual wall switches (special wiring is required, please call for details).  Installation is still a breeze with the body of the fan still fitting between either 16 or 24 inch on center studs or joists.  And the HV line of whole house coolers are still the only whole house fans made with tight sealing, motorized, insulated doors as well as being energy efficient and economical to use. The HV1600-G even offers the quiet operation that Tamarack Technologies products are known for, and only consumes 276 watts of power. 

Tamarack Whole House Cooler outperforms competition in independent lab tests

We know that our HV1000 Whole House Cooler has been quietly, inexpensively and reliably cooling our customers for close to 15 years now.  What we didn’t know is that we should have been calling it the HV1000 PLUS.

We recently submitted our HV1000 to Texas A & M’s airflow testing laboratory for an objective and independent analysis of our performance.  The fan actually moves 1080 cubic feet per minute (cfm) of air! No wonder our customers like it so much.

We also learned that our HV1600, our larger version, moves 1580 cfm at high speed – right where we said it would be!

In addition, we learned a few things about our competition.  One fan that claims to move 1700 cfm actually moves 1180 – barely more that our HV1000.  And when operating under static pressure – as most fans do in the real world – this fan performs even worse.  At .07 inches of static pressure our HV1000 moves 950 cfm and our HV1600 moves 1425 cfm.  This competitor downgrades to 0 cfm – no air movement at all!

The moral of the story is that only independent testing should be relied on to judge fan performance.  In our case we’ve just been a little too modest.  In your case, you’ll want to make sure that the fan you put in your home will perform the way it is supposed to.  So please ask any fan manufacturers for a full set of independent test results before you decide which whole house fan should go in your home.

For a copy of these test results, please call 800-222-5932 or email info@tamtech.com

When buying a whole house fan, there are a number of issues to consider beyond how much air it moves, how it installs, and how much power it consumes. 

By design a whole house fan is mounted between the house and the attic.  When the fan is not running, the hole that the air moves through must be positively closed, or the air will continue to move from the house to the attic.  It is like leaving a window open.  In a cold climate warm, humid air from the house will flow into the attic.  The moisture in the air will condense on the cold surfaces (just as it does on cold window surfaces), and water will drip on the insulation and mold will grow.  Closure systems that do not seal positively will not only lose conditioned air but can cause serious damage to the house.

Flow through a fan changes as obstacles are put in the path.  Grilles, ducts, and gravity dependent backdraft dampers will all reduce the amount of air a fan is able to move.  In some products, such obstacles can reduce the installed air flow by 40% or 50%!  Independent laboratories (such as HVI) can rate the air flow of the product as a system.

Air blown into the attic must be allowed to escape from the attic to the outside otherwise the air will seek other outlets like flowing back down the walls of the house and in through outlets and light fixtures. If you do not have the required net free area, you will not only be pumping heat back into your home but the dusty, smelly attic air as well. Divide the fan’s flow by 750 to determine the necessary, clear opening to the outside.  (Insect screens are particularly restrictive to air flow.)  For example, a 3000 cfm fan would require an open hole of 4 square feet to the outside.  If the hole is covered by an insect screen, the hole would need to be twice that size.

Any sound rating of a fan in “sones” must be performed in a certified laboratory.  At this time, there is no laboratory or standardized test for sound level of whole house fans.  Any sound rating in “sones” in the specifications of a whole house fan is only a manufacturer’s guess.

Tamarack Technologies Inc. has been making its Whole House Coolers since 1994.  They have been installed in thousands of homes in all climates.  They have been independently tested at the HVI laboratories at Texas A & M University for air flow and seal.  They have been tested in numerous houses that have been “blower door” tested and have been found to have virtually no leakage.  Test results are available upon request.

For more information, a product brochure, or technical and pricing assistance, please contact us at 800-222-5932 or E-mail us at: sales@tamtech.com

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