The non-powered, Automatic Foundation Vent will open and close
automatically using a heat/cold sensitive coil. The louvers open
completely at approximately 72°F and completely close at
approximately 38°F. Unlike manual vents that can waste energy when
no one remembers to open or close them, these vents self-adjust all
A crawl space dehumidifier with no
drain or power needed!
See Powered Temp Vents
If installing vent in a below grade
foundation, a vent well is needed.
Click here for
vent well information.
The foundation is critical to the integrity
of the home. That’s 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. What’s more, ventilation can help control conditions
that lead to mold, mildew, fungi, damp rot and unhealthy air.
But there’s more. If
there’s one thing termites are attracted to, it’s 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.
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 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 72°F and
completely close at approximately 38°F. Unlike manual vents
that can waste energy when no one remembers to open or close
them, these vents self-adjust all year long.
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
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
|Dense shrubbery should be trimmed for
the vents to be effective.
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: