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Change is Constant

Looking back at the changes witnessed over the past five decades not so much as nostalgia, but more as history in the making.

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

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