Tjernlund
The new UnderAire ventilation system designed by Tjernlund is a product designed as the most economical solution to circulate in air in the crawl space to eliminate excess moisture.
All three models (V1, V1D, V2D) UnderAire have factory-installed freeze protection thermostats to prevent units from operating if temperatures are below 40°F.
The two models come ready to plug into a power outlet and also include moisturizers that allow homeowners to select the level of humidity that activates the fan.
UnderAire fans are the only ones in the tracking space currently listed by ETL as suitable for wet conditions. They can be installed in a matter of minutes, require no maintenance and are silent.
