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Message: <blockquote data-quote="dennishoddy" data-source="post: 4305590" data-attributes="member: 5412">I spent my working life in big machine shops with heat treat furnaces and the final 16 years in a coal fired power plant, none of which had AC. The turbine floor of the power plant ran 120 degrees in the winter, and 130* in the summer. The O2 probes in the superheater section of the boiler ran 145* year around. We had to calibrate them weekly. Cycle in crews every 20 minutes to complete the calibrations. We have been snowbirds now for 8 years chasing the mid 70's temperatures around the country in an RV. Today in Duluth Minnesota, there was a heat alert for the projected 85* high temp of the day. Those of us in our group we travel with had a big laugh when seeing they were putting in cooling stations and so on as we are from Tx and Ok. They never see that temp here, so it was something they are not prepared for and acclimated for the cold. Nobody here has an AC. Lake Superior provides the AC at the average of 70* in the summer. Winds carry the coolness inland. Been there, done that and hope to never do the summer temps again as long as our health keeps up.</blockquote>