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Crawl Space Vents: Smart Vents

Reviewed by:
Rosemary Thornton
Dark and damp crawl spaces are ideal for spiders and snakes, but not so good for a house. This crawl space ventilator has built-in sensors that measure and monitor temperature and humidity under your house and outside, too.

High capacity, 15-watt fans cycle on when outdoor conditions are optimal and/or when crawl space humidity levels climb. Fans produce one sone (measurement of sound) and move about 295 cubic feet of air per minute.

The manufacturer estimates that the annual operating cost for Smartvent is about $8.00 a year.

  • Smartvent measures 15-1/4" by 7-7/8" (slightly smaller than a concrete block).
  • Price is $365 (December 2005).
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