Knowledge base
The background reading behind our rankings — how evaporative cooling really works, what it costs to run, and how to set a unit up so it performs.
How evaporative coolers actually work (and when they don't)
Evaporative cooling is not marketing language, it is a phase change. Understanding the wet-bulb limit tells you in thirty seconds whether one of these units will help in your room.
7 min read
Cooling a bedroom without central air: what actually helped
Blackout timing, airflow direction and one small cooler beat every folk remedy I have been asked about on a service call.
8 min read
What a portable cooler really costs to run all night
A small evaporative cooler and a window air conditioner are not in the same financial category. Here is the arithmetic, with real rate numbers.
6 min read
Seven mistakes that make a personal cooler feel useless
Most one-star reviews in this category describe a setup problem, not a product problem. These are the seven I see over and over.
7 min read