I would try a discount or second hand business store. Or maybe an auction of some type. You could find special orders that where never picked up. I would even check online.
There are several places you could find a cheap evaporative cooler. For starters, if you would like to buy in person, Walmart, Lowes, and Home Depot all have relatively cheap coolers. If you would like to buy online, there are cheap evaporative coolers on amazon.com, ebay.com, craigslist.com, and walmart.com.
Cheap evaporative coolers can go for as little as $100, but a good quality one would run around $500. If you contact the company of your choosing to purchase the evaporative cooler, I'm sure they could negotiate a business discount. This is not something that is for certain; some companies may only offer retail prices.
On the roof, under the evaporative cooler.
To choose an evaporative cooler, determine the size of the cooler needed, the services of the evaporative cooler, and the correct type of cooler. Consider the accessories required and compare it with a traditional air conditioner.
The only HEPA air purifier that cools the air I could find is the Pure Air Today 3-in-1. It has an evaporative cooler.
Coleman does make a portable 12v evaporative air conditioner. They do not make a picnic cooler that does this however.
The evaporative air cooler is an alternative to conventional central air conditioning. An evaporative air cooling system is more economical to operate than a conventional central air conditioning unit.
An evaporative cooler can develop a musty smell due to mold or mildew growth in the unit. This can happen when excess moisture gets trapped in the system. Regular maintenance and cleaning of the cooler can help prevent this issue.
Using a Honeywell evaporative cooler for cooling your home can be beneficial because it is energy-efficient, cost-effective, and environmentally friendly. Evaporative coolers also add moisture to the air, which can be beneficial in dry climates.
A water evaporative cooler works by drawing warm air through water-soaked pads. The water evaporates, which cools the air. The cooler air is then circulated into the room, lowering the temperature.
The global portable evaporative cooler market size is expected to reach USD 4036.55 Million by 2028; registering at a CAGR of 8.5% from 2022
Where did you buy the cooler at? I'd ask them.