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If the unit is working for several hours before it cuts out and you can just reset the breaker and it works again, your breaker on your new house is just weak. You'll need to replace the breaker on the house because it's getting hot and tripping after the compressor has been running for awhile drawing power for awhile.
It doesn't matter if the house was just built or whatnot, if the refrigerator runs for awhile and eventually trips the breaker---your refrigerator isn't the problem---it's your breaker or the way the house was wires because it's overheating the breaker causing it to trip.
New refrigerators draw less power than older refrigerators. If the issue is the refrigerator itself, it wouldn't be worth fixing because it would mean your compressor is drawing too much power and you'd need to replace the compressor which is about $650.
It wouldn't be worth fixing if the refrigerator was the issue, you'd want to get a new unit.
That's hard to say. I would probably go with a Roper brand for the best bang for your buck. You can get one at Lowes.
Hello again. I'm just following up because I haven't heard back from you and I see this question is still open. Is there anything else I can help you with?