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Foundation Vents - Air Vents for Crawlspaces and Basement Walls - TempVents

Manual and powered temp vent foundation vents, available to the public,
including Radon Vents...

 

 

 

TempVents are available through Pest Control Supply Companies such as:


http://www.wildlifecontrolsupplies.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=WCSTV6BL

http://www.pestcontrolamerica.com/products/Temp-Vent-Series-5-Automatic-Crawl-Space-Vent.html

http://www.pestrong.com/410-temp-vent-automatic-foundation-ventilation-6-series.html

http://www.ebay.com/itm/Crawl-Space-Vent-Temp-Vent-Two-Piece-Unit-/270459581020

 

 

 

 

The foundation is critical to the integrity of the home. Thats why foundation ventilation is critical. Unventilated foundations are subject to built-up moisture that can eventually lead to costly damage.

Temp Vent foundation vent systems help protect this critical area of the home. Whats more, ventilation can help control conditions that lead to mold, mildew, fungi, damp rot and unhealthy air.

But theres more. If theres one thing termites are attracted to, its warm, moist, dead air environments such as those found under houses in crawl spaces or unfinished basements. Temp-Vent products have been especially designed for the pest control industry.

Temp-Vent foundation vents help to provide ventilation that can reduce moisture in these areas, which helps control termites.


Specifying a Temp-Vent System
When you recommend Temp-Vent foundation ventilation products, you can install an automatic, non-powered foundation vent system or electrical powered ventilators.

Specifying a Temp-Vent foundation vent system is simple. All vents are sized to fit 8" x 16" openings with 1 outside frame on each of 4 sides. However, the design of the system and the number of vents required are different for powered and non-powered vents.


Automatic Foundation Vents
The non-powered, Automatic Foundation Vent will open and close automatically using a heat/cold sensitive coil. The louvers open completely at approximately 72F and completely close at approximately 38F. Unlike manual vents that can waste energy when no one remembers to open or close them, these vents self-adjust all year long.

To Specify:
Whenever possible, vents should be placed on all sides of the foundation. This will create an intake/exhaust system that delivers a steady flow of air. One vent should be installed for each 8 to 10 feet of foundation wall.
 

Most building codes require 1 square foot of open ventilation area for every 150 square feet of crawl space. Temp Vent Automatic Foundation Vents have 50 inches of net free area per vent. Therefore, you should install one vent for every 50 square feet of crawl space.
 

For crawl spaces with polyethylene installed, on 80-90% of the floor, the ventilation requirement changes to 1 square foot of ventilation for every 500 square feet of crawl space with a minimum of 4 vents installed to provide cross ventilation. For crawl spaces with polyethylene, install at least one vent for every 500 square feet of crawl space.
 

Installation Tips for Automatic Foundation Vents
 

For proper ventilation, one vent should be installed every 8-10 feet.
Avoid dead air spaced by placing vents within 3 feet of each corner.
A minimum of 4 vents are required to provide cross-ventilation.
Dense shrubbery should be trimmed for the vents to be effective.

 

 


Power Foundation Vents
Powered Temp-Vent systems are designed for foundations that require a higher rate of airflow and for areas that are difficult to vent. Depending on the model they can move large amounts of air per hour. Designed to run continuously on a low speed, they draw minimal electricity. However, Temp-Vent recommends power vents be fitted with a thermostat and a humidistat to control the operation of the vent.

To Specify:
To determine the correct number of Power Temp-Vents, use the following formula:
1) Multiply the square feet of the crawl space by the height in feet. This gives the number of cubic feet in the crawl space.
2) Multiply the cubic feet in the crawl space by the number of air changes per hour desired (4-6 is the recommendation). This gives the total number of cubic feet of air that has to be moved per hour to produce the desired number of air changes.
3) Divide this number by either 7,200 or 11,160 depending on which model is being used to obtain the number of power vents needed.
4) Install vents to provide air intake on one side of the foundation with the power vents on the other side to create a system of intake and exhaust.
 
 
Calculating how many foundation vents are needed.

Example: 1500 square foot crawl space x 3 feet high = 4500
4500 cubic feet x 6 = 27,000 / 7,200 = 3.74
Install 4 power vents with intake vents on the opposite side
 

 

 

 


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