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The estimate sounds outrageous even in California where things are a bit higher than here in Alabama. The wholesale cost of the txv is less than 200 bucks, refrigerant about 8 bucks per lb wholesale and should not take more than 2 to 3 hours total. I would get other estimates.
UNit is most likely overcharged, Continued running could damage compressor as overcharge will wash lubricant from compressor windings.Do not run until we get the txv changed.
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