UnderAire Crawl Space Ventilation Fans, IAQ, Ventilation & Air Transfer Fans
UnderAire Crawl Space Ventilation Fans
Fan powered crawl space ventilation quickly reduces moisture helping to protect both home and occupants. Ventilates excess moisture, the cause of mold, mildew and wood rot. Increases air circulation to fight condensation. Constant operation helps vent radon, treated wood off-gassing and odors that might otherwise migrate into living areas.
- Fan powered crawl space ventilation quickly reduces moisture helping to protect both home and occupants.
- Ventilates excess moisture, the cause of mold, mildew and wood rot. Increases air circulation to fight condensation.
- Constant operation helps vent radon, treated wood off-gassing and odors that might otherwise migrate into living areas.

Improve crawl space ventilation with Tjernlund crawl space fans.

Related Products
AireShare™ Transfer Fans
Make hot or cold rooms more comfortable The perfect companion for homes, condos, hotels & buildings with: Split System or Window A/C Space Heaters, Stoves & Fireplaces PTAC & Ductless Heating/Cooling Electric Baseboard AireShare AS1 & AS2 Room-to-Room transfer fans pull cool air from floor level or warm air
D-Strat Compact, High Velocity Destratification Ceiling Fans
The Problem: Stratification in high ceiling warehouse and commercial spaces creates huge temperature differentials between the ceiling and the occupied floor level. It is typical for a differential of 20 degrees or more to exist. The Solution: D-STRAT™ 30 watt, 540 CFM high velocity fans can reduce this differential by
Fresh Air In-Forcer™
THE PROBLEM:Energy-conserving homebuilding materials and techniques minimize fresh air intake…a major cause of illness, discomfort and structural damage. THE SOLUTION:The IN-FORCER mechanically draws outside air indoors to dilute pollutants and replace stale air without sacrificing energy savings. The FAI4 Powered Air Intake provides a simple and economical way to