By

Jim Bergmann
Appliance Fixation (the art of trying to solve every system problem at the condensing unit) is a rampant problem in the HVAC industry, a problem that results in a plethora of parts being changed without a root cause analysis of the failure. I might compare it to blinders on a horse, but I do not...
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How I became a believer in retrofit And why I believe it is about to become a bigger part of our industry.
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  Have you ever wondered why your old refrigerator never needs service, gauges installed, and can run for 30 years that way maybe only needing an occasional cleaning of the condenser?  For crying out loud, utilities are buying these old energy hogs through some programs because they never seem to die. Why do they last...
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As a primer to this post, I would not have done the evacuation quite this way, with multiple pulldown and isolations at 500 microns,  the goal was to demonstrate the characteristics of a system with moisture and to prove that “hitting 500 microns” is not enough.  Hitting 500 microns in no way shape or form...
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Every decision that a technician makes should be based upon a measurement. Sadly, many times the only decision is simply to make or not make the measurement itself. Technicians, contractors, or owners might realize months, years, or even decades later that they have been missing key measurements, not making measurements correctly, or misinterpreting the meaning...
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