How about the oldest ever ?
Because in the 1980's I used to work on two geo systems which were installed about 1961. The local electric company had them in their office building. Obviously built-on-site.
Which is really how all chillers used to be built - there was no such thing as a "packaged chiller". <g>
Carrier recip compressors, shell & tube heat exchangers, using well water. Neat old system. When the build was sold they ripped it all out and installed cheap RTU's.
sic transit purity - as usual.
PHM
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Originally Posted by
csealer
A bunch of the geo units I service are from the '80s some vertical loop and some open loop. Some of the units have out lived the companies that made them. I just went on a call for 5-ton Jacobsen Energy Industries unit hooked up to a vertical closed loop I'm not sure how old it is I believe it's from the late '80s. We service a Comand-Air/WaterFurnace installed in '85. It's in the basement of an old stone farm house. It's rusted but keeps chugging along. What's the oldest geo unit you have in operation?
PHM
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When faced with the choice between changing one's mind, and proving that there is no need to do so, most tend to get busy on the proof.