and it was cold! We've been having 90 degree F weather here for the last two weeks, so our thermostat has been kept really low, and windows have been open. A rainstorm blew in, and cooled down the entire valley as well as kept drizzling all morning long. Our apt was down to about 55 degrees, and Dudes cage was at 64 degrees! (He's a Chinese Water Dragon). Luckily I always keep a spare Ceramic Heat emitter in place, plugged in, but just off, first thing I did was hit that, close up the closet he lives in, and let him warm up.
I just posted this, as an example of why it's important to have back ups, for people who don't live in places with steady climates. I live in Montana, and as evidenced it can go from hot and warm.. to very cold over night. Places like Phoenix may not have that problem (at least it never did when I lived down there!)