A mist fan sprays fine water droplets into moving air, an evaporative air cooler passes air through wet pads, and an HVLS fan only moves air. For factories, warehouses and halls, air coolers and HVLS fans are the usual choice because they do not wet floors, goods or machines. Mist fans suit open outdoor areas where a little dampness does not matter.
How each one works
- Mist fan (misting or water spray fan): a fan with nozzles that spray a fine mist. The droplets evaporate in the air stream and cool it.
- Evaporative air cooler: a fan pulls air through wet cellulose pads. The water evaporates inside the pad, so only cool air, not droplets, comes out.
- HVLS fan: a large, slow ceiling fan. It cools people by air movement, with no water at all.
Comparison
| Mist fan | Evaporative air cooler | HVLS fan | |
|---|---|---|---|
| Lowers air temperature | Yes | Yes | No |
| Water droplets in the air | Yes | No | No |
| Wet floors or goods | Possible | No | No |
| Best place | Open outdoor areas | Factories, halls, events, semi-open spaces | Large indoor floors with high roofs |
| Water | Fine nozzles need clean water | Tank with pads | None |
| Maintenance | Nozzles clog | Pads and tank cleaning | Very little |
Where mist fans fall short indoors
Indoors, droplets that do not evaporate settle on floors, stock, machines and electrical panels. Floors turn slippery and paper, cartons and metal suffer. Nozzles also block with hard water.
Why industry prefers pads
In a pad cooler the evaporation happens inside the pad. The air leaves cool and slightly more humid, but dry to the touch. Ducts can carry it exactly where people work.
Where an HVLS fan fits
When the main need is air movement over a large floor, or the weather is humid, an HVLS fan is the cheapest to run. It also spreads the cool air from coolers.
What we make
We no longer make mist fans. We manufacture industrial coolers, HVLS fans and mobile floor fans. For open-air venues, the garden cooler does the job a mist fan is often bought for, without the spray.
Frequently asked questions
Is a mist fan better than an air cooler?
For open outdoor areas a mist fan can work; for indoor and semi-open spaces an air cooler is better because it does not spray droplets.
Do mist fans make the floor wet?
They can, when droplets do not fully evaporate, especially indoors or in humid weather.
Does E-Cool sell mist fans?
No. We make industrial coolers, HVLS fans and mobile floor fans instead.