Are you shopping for a new air conditioner and confused by what BTU means? Discover why getting this one rating wrong ruins ...

Yes, BTU ratings matter, but when it comes to portable AC units, one is more telling than the other.

Ever had an AC running all day and still felt uncomfortable? Or a system that cools too fast, then leaves the room uneven and humid? Both problems usually come down to one thing: incorrect sizing. An ...

Last month’s article left off looking at how to verify designs through the field measurement of delivered Btu. In order to accomplish this, you’ll need to understand the basics of the Btu formulas.