attic fan, attic fans, solar
fan, solar powered attic fan, power attic venting, gable fan, attic venting,
energy conservation,german attic fan,
ventilation
Phoenix,
Arizona 85022
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Attic Venting
POWER
VENTING
The importance of venting your attic
cannot be overlooked. In cold climates, improper venting can lead to
moisture build-up which causes mold growth, wood rot in extreme cases or even
ice in the attic insulation. In hot dry climates, stagnant air can dry out
your trusses, increase your energy costs for air conditioning and make your
house uncomfortable.
If your home is like most that we inspect, it is
severely under vented. You can add more soffit and exhaust vents but at
what cost? Power venting may be a more cost effective and
efficient method of achieving your goal. However, venting is just
part of the problem. A well ventilated attic will reduce the
convective load. The largest component of heat gain or heat loss in any
home is infrared heat. Control this and you can really save!
We have found in our full scale testing of homes with a radiant barrier installed that passive venting is not sufficient to remove the millions of BTU's changing direction from the reflective surface and that power venting is required.
Solar Fans: Sounds like a great idea right? Sun comes up, creates free energy, spins a fan to remove the hot air from the attic. In theory this makes sense. The reality however is much different. Question: "At what point during the day will the solar fan put out the most amount of power?" (assuming a Southern exposure for the PV panel). Answer: Solar noon. Next question: "When does the attic require the most amount of venting?" Answer: Between 1:30pm and 7pm. When the attic requires the most amount of venting the solar fan is putting out the least amount of power.
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.
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! The following are examples of what not to do!
This is the 14" German fan mounted before the area around it has been blocked off with cardboard.
The installation seen above
was installed by an engineer. This will have virtually no effect
on
exhausting air from the attic at the opposite end since most of the
air will be entering around
the fans. As you can see he also
installed fiberglass up against the roof decking which will
only
serve to store tremendous amounts of heat all day, cook his roofing system
then allow
it to dissipate long after the sun goes down. The
people who bought this home had $475/mo
energy bills for a 1500 sq
foot home.
Here is a roof mounted German fan mounted where a Home Depot fan used to be. The dome shaped attic fan cover on the roof has been replaced with the correctly sized Aura Vent.
Two 10" fans mounted side by side. Choose this option when a large vent is not available.
To place an order click 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.
Performance Data
| 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 |

Fan Mounting box dimensions:
8" fan: Mounting box is 10"x10"x4" with a 1.5"
flange
10" fan: Mounting box is 12"x12"x4" with a 1.5" flange
12"
fan: Mounting box is 14"x14"x4" with a 1.5" flange
14" fan: Mounting box
is 16"x16"x4" with a 1.5" flange
16" fan: Mounting box is 19.5"x19.5"x4"
with a 1.5" flange
Roof Mounted Fans Need
Exhaust Air
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 Click here
12" German fan: 14" Auravent Model #AV-14-C4-CN Click here
14" German fan: 16" Auravent Model #AV-16-C4-CN Click here
16" German fan: 18" Auravent Model #AV-18-C4-CN Click here


PRICING OPTIONS:
Price includes the fan with
thermostat and 6' of control wire pre-wired to the thermostat which speeds
up the installation. You need only to mount the fan, mount the thermostat
using the supplied junction box and wire nuts and bring a 110volt power supply
to the thermostat. Prices below also include UPS ground shipping. We
strongly suggest the sheet metal support box to facilitate the
installation...it's the best $40 you'll ever spend.
SUGGESTIONS FOR SIZING (go to the next
larger size for steep pitched roofs)
8"
fan 304 CFM $247
(sufficient to ventilate attics up to 500 square feet)
10" fan
624 CFM $312
Shown with
optional fan mounting box and 6' of romex 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.
Installing the roof vent:
Step one: Making it fit
Step two: Sealing the vent
Step three: Securing the vent
How to wire the fan: Click
here
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!
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| Comments: |
Price Rating: Excellent
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To place an order click here
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