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good afternoon, the normal warranty time for the sealed system on these is 5 years so if its over that then the warranty doesn't cover it.as far as a cost to repair the compressor is around $300.00-$400.00 and your probably looking at about $200-$300 for labor to vacuum the system down and replace compressor then recharge it with freon. unfortunately it sounds like the compressor is the issue. I would call Sub-Zero and make sure the warranty is up before going ahead with the repair out of pocket. I hope this helps. thanks and well wishes, Bryan
I don't have an exact install date since we didn't own the house then. Where would I locate the serial number, and would that be sufficient for Sub Zero to check the warranty status?