Quote:
Originally Posted by Warren Kiefer
I have been told dozens of times that AC units in Florida only last an average of 10 years. I believe this is accurate as I watch most of my neighbors having their AC units replaced at about this lapse of time. You do present some valid points BUT, there are differences. One of the main components that fail are the cooling coils. Several years ago cooling coils were all made of copper. In today's units the coils are now made of aluminum and much thinner than the copper coils.
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The cooling coil you are referring to is the evaporator or in the instance of a heat pump it is called an inside coil. The gauge of the coil does not determine its longevity. If the line set has been evacuated properly there will be no acid present in the system thereby negating the porosity of the evaporator. Up selling is the reason for systems bring replaced within 10 years. The typical Florida technician is trained to upsell rather then repair the problem. He receives a commission for his efforts. I am a commercial HVAC professional that knows full well how these guys operate and frankly I find it disturbing and IMHO borderline criminal .