Change is Constant

摘要

48-years of learning and I feel like keeping up with changes in PHVAC is less of a marathon and more like a mad dash. The old days of carrying just a flashlight, 4-way screwdriver, and a pair of water-pump pliers are but a pleasant memory of simpler times. PC boards did not exist. Electronic ignition was not yet a gleam in some engineer's mind. My very first service call - sent out on my own on that first day - turned out to be a thermocouple. Looking back at the changes witnessed over the past five decades not so much as nostalgia, but more as history in the making.