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Old 05-09-2011, 07:39 PM   #1
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undersized and oversized

what is the effect of undersized and oversize compressor, condenser, and evaporator..


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Old 05-09-2011, 07:45 PM   #2
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Why do you want to know. There are 12-24 different problems with those and you need to understand the fundamentals of refrigeration to understand them.


"Cut it twice and it is still too short".
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Old 05-09-2011, 08:39 PM   #3
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Thats a bigger question then you realize.

Can you n arrow down the question to what your application is.
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Old 05-09-2011, 08:51 PM   #4
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undersized: will run forever and take very long to cool - inefficient
oversized: will not run long enough, stop right away, only to start again shortly after. So lot of on/off cycles. Also inefficient. Will also never give the coil a chance to collect much water, so the humidity control won't be very good.

I'm sure there is more to it too but that's the jist of it.

I learned about the oversizing factor with my 1 ton AC unit I use in a 70 square foot room.
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