1. Sharper Image - PORTAL Window Fan with Reversible Exhaust - Black

VORNADO 530 Compact Air Circulator: Mechanical switch; 3 speeds; Vortex Action; multidirectional airflow; whisper-quiet operation

Sharper Image creates cutting edge products - so when we set out to create a window fan, we did our research and then rewrote the formula. The result was a mere 6.12" tall, cleverly enough to be seamlessly installed in windows up to 38" wide using to an innovative modular block system. In today's world full of ugly, repetitive window fans, Portal is a window fan that lives up to the Sharper Image vision - to bring products today inspired by Tomorrow's Tomorrow.

2. Sharper Image - PORTAL Window Fan with Reversible Exhaust - Ice White

Multi-User MIMO and Seamless Roaming; supports two Wi-Fi modes; works with all Wi-Fi routers; easy setup with WPS and Spot Finder technology

Sharper Image creates cutting edge products - so when we set out to create a window fan, we did our research and then rewrote the formula. The result was a mere 6.12" tall, cleverly enough to be seamlessly installed in windows up to 38" wide using to an innovative modular block system. In today's world full of ugly, repetitive window fans, Portal is a window fan that lives up to the Sharper Image vision - to bring products today inspired by Tomorrow's Tomorrow.

3. Lasko - 16" Electrically Reversible Window Fan with Storm Guard - White

2-speed, rain-resistant motor; dual-sided control; grille guards; freestanding option; adjustable slide screens; carrying handle

The Lasko 16-inch window fan will keep you cool both day and night. It provides whole-house ventilation with an electrically reversible intake and exhaust motor. Use exhaust during the day to create a refreshing indoor breeze that expels accumulating heat. Use intake at night to draw in the cool evening air. With the Storm Guard feature, the window can be closed behind the fan quickly to keep rain water from blowing into your home. This window fan fits most double-hung, casement, and sliding windows.

4. Vornado - TRANSOM Window Fan with Reversible Exhaust - Black

Lasko Wind Curve Tower Fan with Nighttime Setting, Gray/Silver

Transom is the result of a complete re-imagining of what a window fan should be. The air chamber abundantly draws fresh air from the outside in — or reverses electronically to exhaust stale air out. Powerful airflow circulation and comfort at half the height of conventional window fans, Transom is easy to install, blends elegantly into the space and preservesyour view. Transom seals off windows 26” to 40” wide with the patented Soft-fit System that provides a sleek, satisfying and snug fit from end to end, without having to remove your screen. Transom – a new kind of window fan.

5. Vornado - TRANSOM Window Fan with Reversible Exhaust - Ice White

2-speed, rain-resistant motor; dual-sided control; grille guards; freestanding option; adjustable slide screens; carrying handle

Transom is the result of a complete re-imagining of what a window fan should be. The air chamber abundantly draws fresh air from the outside in — or reverses electronically to exhaust stale air out. Powerful airflow circulation and comfort at half the height of conventional window fans, Transom is easy to install, blends elegantly into the space and preservesyour view. Transom seals off windows 26” to 40” wide with the patented Soft-fit System that provides a sleek, satisfying and snug fit from end to end, without having to remove your screen. Transom – a new kind of window fan.

6. Lasko - Twin Window Fan - White

2-speed, rain-resistant motor; dual-sided control; grille guards; freestanding option; adjustable slide screens; carrying handle

The Lasko twin window fan will keep you cool both day and night. 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. The fan can be positioned for intake or exhaust and the slim profile ensures that the outdoors is still within view.

7. Lasko - Electrically Reversible Twin Window Fan with Remote Control - White

2-speed, rain-resistant motor; dual-sided control; grille guards; freestanding option; adjustable slide screens; carrying handle

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.