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How Misting Fans Work

Why not pump up the cooling factor in your fan this summer?
You should consider buying a misting fan, which will cool the air around you even more efficiently than a regular fan.

These fans can lower a given temperature by as much as 40° F as they use a technology known as evaporative cooling in the manner of a primitive air conditioner.
Here’s how these fun little machines work as they’ve migrated from NFL sidelines and grocery vegetable bins to people’s decks, porches, pools, yards, garages and produce stands:

Technical Details

High-pressure pumps produce water pressure that reaches 1000 PSI (pounds per square inch) and pushes water through tiny nozzle openings that release micron-sized droplets. As few as four nozzles can do the trick to produce a nice mist as the blades whir in the fan. Larger fans have up to eight nozzles to push the water in the air.

Lasko 7050 Misto FanThe water is purified before it is released and a typical misting fan will use about 1-2 gallons of water per hour. The water is drawn from a reservoir at the fan’s base or from a large tub-like tank that can hold up to 10 gallons.

The portable models hold just a gallon or so and will need to be refilled every hour.
The micro-models, handy at the beach, can fit into the palm of your hand, and other smaller models feature two 10” fans in a tower arrangement.

How It Cools You

The thin mist that is pushed from the fan evaporates almost immediately as it comes into contact with warm air and sunlight. The droplets do a lot of work, though, pulling heat energy with them to cause a drop in air temperature.

The fan blows these droplets into a wide area, producing an entire zone of cooled-down air. Because the mist is so fine, nothing at a reasonable distance from the fan gets wet. The mist is akin to a light fog that does not make your skin wet but that you can see on your car in the morning.

If you stand closer than six inches to the fan, you will get wet, but otherwise these droplets will be evaporated by the time you experience the cooler air.

Where It’s Used

Homeowners are using misting fans around pools, in backyard gardens and in outdoor garages. Others use them to keep their entire yards somewhat cool, especially when they are working in that area. Portable models are proving popular at picnics, and hand-held misting fans are used by beachgoers and spectators at outdoor sporting events.

Business owners are using misting fans on factory floors and work sites as well. Misting fans can be operated indoors or out.
These fans come in a variety of sizes, from 16” to 30+”, with the 18” and 24” models proving most popular. They can be mounted on a wall or pedestal.
The most recent models combine three functions: humidifier, normal fan and misting fan, depending on your needs at the time of use.

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