Lately it's been running in the mid-90s here, and my air conditioner has been running non-stop during the day. I assumed that it was "bad" in some way, but after some further research, I find out that air conditioners in the US are typically set to provide only 20° of cooling, which is why my thermostat never reached its set at 72°.

Who here knows anything about air conditioning? I don't understand where this 20° figure is coming from, for one thing. Certainly it's not like that everywhere. Basically, any information about how I can make my house actually cool down properly would be great.