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.
Non-Powered Temp Vents
If installing vent in a below grade
foundation, a vent well is needed.
Click here for
vent well information.
Temp Vent foundation vent systems help protect this critical area
of the home. Ventilation can help control conditions
that lead to mold, mildew, fungi, damp rot and unhealthy air.
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.
When you recommend Temp-Vent foundation ventilation
products, you can install an automatic, non-powered
foundation vent system or electrical powered
Specifying a Temp-Vent foundation vent system is
simple. All vents are sized to fit 8" x
16" openings with 1Ē 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.
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
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
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
3) Divide this number by either 7,200 or 11,160 ó
depending on which model is being used ó 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.
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
Note: The operation of this temp-vent may be loud when
installed in a wood stud wall. To reduce noise, install in a
concrete or cinder block foundation wall, or add insulation and anti
TempVents are available from your local Pest Control Supply Company
or nationally at the following companies:
Wildlife Control Supplies .com
Pest Control of America .com
Sometimes even on Ebay: