I would say these would be transform boundaries where the tectonic energy appears to be transformed from one plate to another such as off the coast of Guatemala so it is not a simple process of subduction,.
It's better to have air conditioning units near the ceiling regardless of where you live. Since cool air sinks, air conditioning units are usually near the ceiling so the cool air can spread around the room more. Hope this helped =)
The greatest concentration of public in the US is in Texas.
