Phoenix residents ration air conditioning, fearing future electric bills, as record-breaking heat turns homes into "air fryers"

Temperatures have peaked at or above 110 degrees Fahrenheit (43.3 degrees Celsius) the entire month of July in Phoenix. Air conditioning, which made modern Phoenix even possible, is a lifeline.

When a cloudless sky combines with outdoor temperatures over 100 F, your house turns into an "air fryer" or "broiler," as the roof absorbs powerful heat and radiates it downward, said Jonathan Bean, co-director of the Institute for Energy Solutions at the University of Arizona. Bean knows this not only from his research, he also experienced it firsthand this weekend when his air conditioner broke.

"This level of heat that we are having in Phoenix right now is enormously dangerous, particularly for people who either don't have air conditioning or cannot afford to operate their air conditioner," said Evan Mallen, a senior analyst for Georgia Institute of Technology's Urban Climate Lab.