How does AC refrigeratant work?


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Old 05-30-13, 05:36 AM
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How does AC refrigeratant work?

If at first turn on for summer 2013, my AC isn't working, and I'm told all my R410A has leaked out of 2 year old AC, due to Evaporator coil leak; would this have been a slow leak... or would this have all leaked out as soon as it was turned on? Was this likely a leak at the end of last season?
Is the R410A circulating while the system is off? Or was it leaking all through out the winter?
Just trying to understand how this system works? Thanks!
 
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Old 05-30-13, 10:33 AM
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The refrigerant doesn't circulate when it's off, but if there's a leak it will continue leaking until the unit is fixed.
 
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Old 05-30-13, 10:54 AM
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Adding to Muggle's post, the system has a residual pressure even when the unit is off, so any source of leakage would continue to slowly bleed off refrigerant. Pretty young for an evaporator to be leaking; should be under warranty.
 
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Old 05-30-13, 06:17 PM
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as stated, it should be in warranty and the repair price from the contractor should reflect that. You may still be liable for labor and refrigerant and other consumables.
 
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Old 06-01-13, 06:53 AM
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Refrigerant will always seek and migrate to coldest area when off long enough.One reason why they have compressor heaters.
 
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Old 06-01-13, 01:06 PM
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I never heard that before. The only reason that I know of refrigeration compressors to have a heater is to boil the refrigerant out of the oil.
 
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Old 06-01-13, 01:09 PM
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Furs, guy old is correct.... refrigerant migrates to the coldest spot.
 
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Old 06-01-13, 01:22 PM
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Oil is carried anywhere the freon is pumped.If not pipe correctly can build up in evap. coil making it less effective.A slight overcharge can make the compessor see liquid not a good thing.
 
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Old 06-01-13, 02:25 PM
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I am aware of the oil traveling through the system and liquid slugging of the compressor. I just never heard of (or forgot) about refrigerant migrating to the coldest area.
 
 

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