A brochure explaining a cost-effective way to mechanically circulate fresh outdoor air within the crawl space to eliminate excess moisture is available to builders, remodelers and homeowners from Minnesota-based Tjernlund Products. The company offers a family of crawl space ventilation fans, called “UnderAire.”
UnderAire fans are the only crawl space ventilators currently listed by ETL as “suitable for damp conditions.”
All three UnderAire models have factory-installed freeze protection thermostats that prevent the units from operating if temperatures are below 40° F. The two deluxe models come ready to plug into an electrical outlet and also include dehumidistats that allow homeowners to select the humidity level that activates the ventilator.
Tjernlund UnderAire fans can be installed in minutes, require no maintenance and are described as "whisper quiet."
The brochure includes installation, number-of-ventilators-required calculator, performance and dimensions. Visit tjernlund.com or call the company, at 800-255-4208.