I watched that immediately after buying a portable air conditioner. Thankfully, too, because I think he oversells the inefficiency and effectiveness of portable air conditioners. It's very easy to leave that video thinking you shouldn't bother with one, but the reality is that they're actually pretty damned good machines. Window-mounted units are marginally better, sure, but if that's not an option or you live a place that doesn't stay hot for very long, then they're fine, your electric bill is just a little higher. Which is fine for me because there's two months out of the year I need A/C and the alternative is a fan.