Plant trees or shrubs to shade air-conditioning units but not to block the airflow. A unit operating in the shade uses as much as 10% less electricity than the same one operating in the sun.
Ever wonder what wood is the best to burn as firewood? Oak is an American favorite, other hardwoods are also a good choice. You can burn other softer wood also, as long as it is split and dried long enough. It’s much more important to burn dry wood than to worry about what kind of wood it is.