Lasko 2138

The powerful motors of the Lasko 2138 8-Inch Electrically Reversible Twin Window Fan make this fan perfect for use in any room. It will even cool down large rooms with reasonable efficiency. The independent controls for both blades allow this fan to be tailored to any situation, whether cooling, exhaust or circulation is needed, and it can be adapted even for desk or floor use with the removable feet.

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This fan is nicely quiet for the power and seems able to run non stop without many problems, but it does come with a manual thermostat that allows the fan to turn off once the room reaches the desired temperature. Setting the temperature is a bit of guesswork since there are no readings on the knob, just low to high, but turning it down a bit once the room is cool enough will adjust it to the right setting. The manual thermostats are much less sensitive than the digital type, which is a plus if you don’t like for the fan to circle on and off too often.

There are only two speed settings to this fan, and it would be nice if there were three since high has such a powerful blow but low may not be enough for some comfort levels. There is definitely a very detectable difference between the two speeds.

Window installation is a bit more of a hassle, as the E-Z-Click extender panels may take a bit more work and fuss than the name implies, the problem being that they don’t always stay in place. A pair of screws are included, but they are small and difficult to work with and turning them too hard can easily strip the plastic. This makes installation into windows larger than 30 inches a bit of a headache, but if the fan isn’t moved much then the individual intake/exhaust/circulate buttons for each side make this a one time hassle since the fan doesn’t need to be manually flipped. It also lacks a groove on the top and bottom that make other fans fit more tightly to the window and sill, but this is surprisingly less of a problem than it appears to be at first notice since the fan sits well enough once the window’s edge is placed on the top.

If a kitchen only has one window, the fans can be set to circulate, with one blowing in and one sucking the odors out. It clears the room just as fast as opening a second window and brings plenty of cool air in while it works because the airflow is much stronger than most window fans.

Another great use for the Lasko 2138 is to keep computers cool while working at a desk. The exhaust function is strong enough to pull plenty of hot air away from the back of the computer and keep it purring along. Also, one side of the fan can be set on exhaust to pull away the hot air while the other side is set to intake to provide a little relief for the user. The power, durability and versatility of this fan definitely make up for the small design flaws with the extender panels.

Product features

  • 8-inch blades for strong air movement
  • Fans can be independently reversed for intake, exhaust or circulate
  • Adjustable to fit most slider and double hung windows 25 to 35 inches wide
  • Manual thermostat for perfect comfort control
  • Removable feet for floor, desk or window use
  • Quiet operation
  • Two speed settings

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