So sorry to hear about your frozen pipes, I wasn't aware that the Hot water pipes freeze first either, that's a new one on me.
We ocassionaly get some cold temps here on the Coast, we let the water drip, leave the doors open under sinks, put a heat lamp on the well pump, and also heat tape on pipes.
It's looks and feels like spring here lately. Temps around 70, Inland areas have hit 75+, the blue jays are back, plants are popping up, some blooming, trees budding, I've had the house open, really loving these temps, but we'll get what's due before too much longer. I'm not a cold weather person, spring and summer can't get here soon enough.
Hope you get your pipes all taken care of soon.