
The Lasko electronically reversible twin window fan will keep you cool both day and night. Two independently-controlled motor fans operate in three ways - intake to bring in fresh air, exhaust to push out stale air, and exchange to combine both operations. The digital thermostat senses room temperature and turns the fan on or off automatically to maintain the comfort level of your choice. It fits most windows (double-hung, casement or sliding) from 22 inches to 32 inches. The expandable panels of this fully assembled unit provide a custom fit for your window space and the slim profile ensures that the outdoors is still within view.
Q: Does this window fan have multiple operating modes?
A: Yes, this fan has three operating modes: intake, exhaust, and exchange.
Q: What is the smallest window this fan will fit?
A: This fan fits windows from 22 inches to 32 inches.
Q: How many fans does this Lasko fan have?
A: This Lasko fan comes with two side-by-side 9-inch fans.
Q: Are the fans controlled together or separately?
A: The fans have independently-controlled motors.
A: Exchange mode means one fan brings fresh air in and one pushes stale air out.
Q: Can this fan be placed vertically?
A: No, it cannot be placed vertically. Additionally I have had a very bad experience with this fan. In power spikes, this fan simply dies and cannot be repaired. They sent me replacement fans twice, but after 6 months, they just stopped working. Lasko does not provide the parts even if I determine what the problem is. (I am an electrical engineer). The electronics in the fan is poor quality.
A: Thank you for reaching out to Lasko. We do not recommend as it might hinder the airflow.
Q: What is the CFM (Cubic Feet per Minute) rating ?
A: Hello, Thanks for your query. Upon checking, this unit has a CFM of 396 for low settings and 560 for high settings.