Vertical Damper Installation, Part 1: AirScape Models

Over the years ve’ve also fielded a lot of questions from customers wanting to know if our fans’ dampers can be installed vertically (i.e. in a wall rather than over a ceiling) or at an angle on top of a vaulted ceiling. The short answer to both questions is “yes”, but there are some important limits that need to be considered, which we’d like to go over. Please note: this blog post is limited to our line of AirScape fans—Kohilo models will be covered in a future post.

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Designing the 5.0e

5.0e, Front
5.0e, Front

Our newest model of whole house fan, the 5.0e, is has been available on our website since spring. We’re extremely excited about it. Not only is this our first new fan in several years, but it is also our most powerful and our most efficient fan ever. Moreover, we’re manufacturing a greater portion of this fan “in-house” at our Medford, Oregon facility than any of our other fans. We’re also seeking a patent for some of the innovations behind its performance. As our patent is finally “pending”, we can now share the story of the 5.0e’s development.

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Local to Southern Oregon? Save on a Whole House Fan!

As you might be aware, we here at AirScape are located in beautiful Southern Oregon—Medford to be exact. The climate here is pretty terrific: not too hot, cold, or humid, and with low overnight temperatures, even during the summer. In this climate it is completely realistic to replace traditional A/C with a whole house fan (depending, of course, on the size of home and desired indoor temperature). To see just how well one of our fans works in Southern Oregon, check out the data from our Ashland Data Monitoring demo site.

The ongoing heat wave in the Western states has been generating a lot of interest in our  fans. If you’re reading this from Southern Oregon or within easy driving distance thereof, we’d like you to know about an offer we extend to “locals”: Anyone interested in purchasing an AirScape whole house fan and willing to pick it up in person at our Medford, Oregon facility can take advantage of:

  1. Zero shipping charges (obviously); and,
  2. A 10% discount on their purchase.

There are two caveats. Firstly, this offer is strictly “FOB Origin”: you are responsible for transporting your purchase to its install location, and for any damage it might sustain en route thereto. Secondly, you need to call us directly at 1.866.448.4187 to place your order and arrange to pick it up.

If you’re cooling your home with A/C, rising temperatures mean heavier electrical bills. If you’re not, they mean hot, stuffy bedrooms, lost sleep, and a lower quality of life. In either case, there’s no need to suffer. Our whole house fans offer a natural, energy-efficient means of cooling your home. Call us today to find the right solution for you.

AS-palletship
AirScape’s Shipping Dock, Medford, Oregon

 

Now Introducing… Solar-powered Whole House Fans!

Not really. The headline above is a little tongue-in-cheek. Readers of this blog will know our fans are designed to be run at night, when cool outdoor temperatures can be drawn indoors. Since photovoltaic cells can’t generate electricity at night, directly powering a whole house fan with solar generated electricity isn’t possible—unless, of course, one wants to run their fan during the day, which would heat the home rather than cool it!

We do, however, frequently receive calls from homeowners wanting to know if they can run a whole house fan directly off of their home solar array. We wish they could. Because they’re a more efficient substitute for mechanical air conditioning, whole house fans greatly compliment solar by reducing the size of array needed to provide the same cooling. But again, photovoltaics don’t work at night.

To operate a whole house fan with electricity generated by a solar array, homeowners need some sort of energy storage device that would allow them to store electricity they generate but do not use during the day. Then, this stored electricity could be drawn down through the night to power the whole house fan.

In short, they need a battery—which is why we’ve followed Tesla’s recent announcement of their new Powerwall home battery system with great interest. Home battery systems have been available for some time now. But they have never been as prominent in the popular discourse as they are now, makings this the ideal moment for a blog post “back of the envelope” analysis about using a home battery to operate an AirScape fan.

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WHF Discharge into Attics

We occasionally get questions from potential customers about ducting a whole house fan directly outside, instead of having it discharge into the attic.  Have a look at the graph below from our San Jose DMP demo site to illustrate why we recommend discharging into the attic space.

At the end of a hot day, the attic space is around 95 deg F (RED line).  When the whole house fan is started (GRAY line spike to speed 6), the attic temp drops over 10 deg F in just a few minutes.  What you are looking at is the flushing effect of the whole house fan pushing all that hot attic air outside.  Without that flushing effect, the house would continue to have additional heat load from the attic.  This is an additional (bonus) effect on top of the cool outside air being pulled into your living space!

More info on DMP and Demo Page

attic temp

Winter Fan Use

Over the past few years we have received a lot of feedback from customers regarding the performance and energy efficiency of our fans during the hot summer months. The only thing lacking is how to use the fan year round. To assist with this we offer the SI (seasonal insulation) kit to help increase the R value of our unit. Lately we have been exploring the idea of getting some use from the fan during the winter. The concept of moving outside temperature air through your home doesn’t have to be limited to cool summer nights. The same technology that can cool your home can also be used to bring heat into your home. Some climates can become warm enough during the day to allow for the air to be brought inside and ultimately warm the house. Using the unit the same way you would at night for cooling during summer, in winter, the unit can be turned on when the temperature outside the home gets at or above the desired temperature inside the home. Creating these air exchanges during the day will help in warming the insulation, foundation, etc. which would otherwise have to be heated by your existing heating system. We want you to get the most out of your Airscape fan, and tips like these really help save money during this time of the year.

http://www.hvacquick.com/products/residential/Grilles-Registers/Access-Doors

For further questions please contact Jeremy Batham, Airscape Technical Support 866-448-4187