attic fan, attic fans, solar
fan, solar powered attic fan, power attic venting, gable fan, attic venting,
energy conservation
Powered Attic
Venting
POWER VENTING
The importance of venting your attic cannot be overlooked. In cold climates, improper venting can lead to moisture condensation which causes mold to grow, wood rot in extreme cases or even ice in the attic insulation. In hot, dry climates, stagnant air cooks structural lumber, increases energy costs and makes your environment uncomfortable.
In the past, overcoming this was no problem, just turn down (or up), the thermostat. However, the days of inexpensive power are over and increasing regularly. Making your home more efficient is a permanent investment that increases in value as energy costs rise.
Decades of energy audits
reveals most homes are severely under vented. Most don't meet minimum
codes. Even more are plugged with insulation. You can add more
and exhaust vents but at what cost? Power venting may be a more
cost effective and efficient method of achieving your goal. If
this is the case, these fans are the ones to use.
Click here to visit our
comprehensive attic venting page
Step by step instructions on replacing your burned out, roof mounted attic fan Click here
To place an order click
here
This shows a typical home store attic fan installed on a gable
vent inside the attic. Although the mounting looks secure, the application
is incorrect since the space around the fan is not blocked off. The fan
will create a negative pressure behind the fan and will draw air from the
closest point, in this case, from vent openings around the fan.
This means
very little air will be exhausted from the attic and most of it will be drawn in
around the fan.
The open area around the fan shroud (the round ring),
needs to be blocked off with cardboard or wood to make this type of installation
effective. We see this type of installation on almost every home that has
one!
Power Fans:
Natural
attic venting is best but in many homes a powered attic ventilator is more cost
effective, especially in tile roofs.
USE CAUTION WITH SOLAR ATTIC
FANS, Great for a shed or small area, not sufficient CFM air
movement for a home attic. The 15 watt model we tested here in Phoenix
using a Dwyer Digital Draft hood, pointed South at noon moved
310cfm.
We import a vibration free,
powerful, reliable powered attic fan manufactured in Germany. This attic
fan is unlike any other available: quiet, powerful and very
efficient.
We include an adjustable thermostat and an optional mounting box
with this system. This fan features an external rotor to which the fan
blades are welded. This unique design reduces blade flex and
vibration and eliminates one of the shaft bearings.
The bearings are
sealed and never need attention. Install it, set the thermostat and forget
about it. The 14" fan consumes 245 watts. At a national average of
.10/kwh running for eight hours a day that's less than $6 per month.
There are sites on the 'net that say the power consumption of an attic fan does
not offset the cost of running it. The goal is keeping your A/C off as
much as possible which consumes 1600 watts per ton. Logic would dictate
running a fan for $6/month would be preferable to longer run times on your A/C
unit from the stagnate, overheated attic air and the load on your
ceiling.
Pictured here are two 10"
fans which were needed due to outside vent opening
shape, this is more costly but a significant increase
in performance. (sent in by one of our customers!) Nice design,
touche'!
Important to notice all of
the vent openings around the fan are blocked off to prevent air from coming in
around the fan. This is critical to good performance in the installation
of any fan.
The optional sheet metal
mounting box we fabricate makes the installation straightforward, fast and
secure. There's a handy (optional) install tool kit with an
awesome screw holder/driver, mounting screws and wire nuts. The thermostat
and junction box (included & pre-wired), can be mounted
10' from the fan to sense the attic temperature. Set it at 105f and forget
this fan is running as no maintenance is required.
14" 1800 CFM fan
shown above
Unconditional satisfaction guarantee.
To place an order click here
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here
In homes that have gas appliances such as water heaters or furnaces in the attic, great care must be taken to insure adequate intake venting is provided (gables/soffits), so as to not create a negative pressure that will draw fumes down the chimney of gas appliances. Installing an attic fan in this application has the potential for fire or filling your attic with carbon dioxide. Just make certain there is sufficient intake openings to circumvent this situation.
Step by step
instructions on replacing your burned out, roof mounted attic fan Click
here
To mount this fan under a roof deck we recommend using an Aura Vent of the appropriate size listed below:
10" German fan: 12" Auravent Model #AV-12-C4-CN Picture
12" German fan: 14" Auravent Model #AV-14-C4-CN Picture
14" German fan: 16" Auravent Model #AV-16-C4-CN Picture
16" German fan: 18" Auravent Model #AV-18-C4-CN Picture
German Fan Features
To place an order click here
| Fan Model |
RPM | Volts | Max. Watts |
Max. Amps |
0" | .100" | .125" | .25" | .375" | .5" | Sones** |
| 8" PAV | 1550 | 115 | 45 | 0.41 | 304 | 246 | 224 | 74 | - | - | 4.1" |
| 10"
PAV |
1500 | 115 | 68 | 0.62 | 624 | 558 | 533 | 377 | 132 | - | 7.9 |
| 12" PAV | 1400 | 115 | 130 | 1.19 | 1208 | 1069 | 1030 | 797 | - | - | 9.4 |
| 14" PAV | 1200 | 115 | 245 | 2.24 | 1839 | 1654 | 1599 | 1295 | - | - | 9.6 |
| 16" PAV | 1400 | 115 | 458 | 4.19 | 3054 | 2882 | 2839 | 2570 | 2198 | 1699 | 12.0 |
| 18" PAV | 1550 | 115 | 698 | 6.39 | 4115 | 3895 | 3840 | 3549 | 3239 | 2908 | 14.3 |
| 20"
PAV |
1100 | 115 | 435 | 3.98 | 3693 | 3368 | 3279 | 2775 | 1429 | - | 10.7 |
| 20"
PAV |
1450 | 115* | 916 | 8.39 | 4949 | 4682 | 4615 | 4274 | 3917 | 3445 | 16.4 |
| 22"
PAV |
1000 | 115* | 756 | 6.92 | 5629 | 5248 | 5153 | 4432 | - | - | 12. |
| 25" PAV | 1000 | 115* | 1134 | 10.38 | 7858 | 7355 | 7230 | 6567 | - | - | 14.8 |


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Shown with optional fan mounting
box pre-wired to an accurate, adjustable thermostat. You need only to
mount the included 2"x4" junction box (near the peak of the roof), and supply a
source of 110v power to the thermostat. We've done most of the work for
you! Shown here is the blue plastic junction box with the unit pre-wired,
just add power! Set the Thermostat at 110f and forget about it, no oiling, no
service is ever required.
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From our fan customers
THE 12" FAN ARRIVED YESTERDAY {Friday June 23, 2006} AT APPROXIMATELY 12:00 NOON BY UNITED PARCEL SERVICE AND I HAD A CONTRACTOR INSTALL IT TODAY {Saturday June 24, 2006} IN THE FRONT PART OF THE GARAGE ABOVE THE DOUBLE OVERHEAD GARAGE DOOR OPENING WHERE A "VENT" WAS PLACED WHEN THEY BUILT THE HOUSE FOUR YEARS AGO. YES, THE TWO ROOF VENTS OVER THE GARAGE WERE BLOCKED OFF BY STAPLING BOTH WITH A PIECE OF CARDBOARD PER YOUR ADVICE SO THAT THE ONLY AIR NOW COMES FROM THE FIVE (5) ROOF VENTS OF THE HOUSE PLUS THE SOFFITS. AND YES, THE FAN IS INSTALLED CORRECTLY BY HAVING IT COMPLETELY ENCLOSED IN A BOX MADE UP OF A PIECE OF 3/4" PLYWOOD {A ROUND HOLE CUT INTO IT FOR THE FAN} AND ALL FOUR SIDES WITH {2" X 4"}. THERE ISN'T ANY "OPEN AIR SPACES" AROUND THE BOX AS THE BOX COVERS THE ENTIRE VENT AREA PUT IN THE FRONT OF THE GARAGE WHEN THEY BUILT THE HOUSE.
NOTE: THE OLD FAN WASN'T INSTALLED PROPERLY AND LOOKED EXACTLY LIKE THE PICTURE ON YOUR WEB SITE WHERE IT'S OPEN ALL AROUND THE FAN HOUSING. ISN'T THAT A SHAME THAT A CONTRACTOR WOULD DO SUCH SLOPPY WORK. I DIDN'T USE THESE SAME CONTRACTORS AND WOULDN'T RECOMMEND THEM TO ANY ONE. THE NEW CONTRACTOR DID A WONDERFUL JOB.
YES, SO FAR THE NEW FAN IS QUIET AND I'M GLAD IT'S IN BEFORE THE HEAT OF THE SUMMER FORBIDS ONE FROM ENTERING THE ATTIC TO INSTALL ONE. HOPEFULLY THE 12" FAN WILL DO THE JOB AS YOU TALKED ME OUT OF THE 14" FAN SAYING I WOULD BE OVER DOING IT. THE OLD FAN WAS ONE YEAR OLD AND WAS------"WHISPERCOOL" ATTIC VENTILATOR 1320 CFM, MODEL # 53319 WCGB 12"------AND THE MOTOR WAS SHOT AND WOULDN'T RUN AT ALL. HOPEFULLY THE NEW FAN THAT I PURCHASED FROM YOU WILL LAST MUCH LONGER AS IT'S QUITE EXPENSIVE ON SOCIAL SECURITY MONEY.
THANKS FOR ALL YOUR TIME AND THE VALUABLE INFORMATION.-----------------------------MARVIN
My purchase of an attic vent fan was a completly good experience. I like your website.....lots of information. If you could somehow get the price down that would be key to increasing your sales .....until....until..... people "get it"...your product and the packaging it arrived in reminded me very much of the aircraft I worked on....solid, extreme quality, excellent design, applied correctly to solve a problem........most people will not pay for that....I learned that the long hard way.....very few people will "take a chance" for quality....lots of folks have no clue about saving energy. Your web site should be read by everyone!
If you live in Phoenix, click here to find out about our
Home NRG Auditsİ. Then, after your attic is properly vented, check out our
revolutionary Radiant Barrier Chips
or our latest patented energy product, Thermal Control Membrane to further
increase your home's comfort and efficiency and make certain you wrap your ducts
with our Duct
Wrap product for peak efficiency.
To place an order click here
If you found this information helpful or would like to comment, click here