The estimated yearly operating cost is $36.00.

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Frigidaire

Yes, the freezer and refrigerator do have seperate doors.

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Frigidaire

Yes, this unit does have a seperate freezer door.

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Frigidaire

Hello,

This appliance is made to be used inside. If you were to decide to use it outside, it would simply void your manufacturer's warranty.

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Frigidaire

This model does not offer a lock.

Hi,

Thank you for your inquiry. Unit model BFPH31M6LM does has a compressor as it acts as the heart of appliance assisting it in ensuring the unit cools appropriately.

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Hey Frigidaire Friend! Thank you for your inquiry! When defrosting your compact refrigerator, BFPH31M6LM, we do recommend placing a drip pan beneath the freezer compartment. This is not an item that comes with your refrigerator. If you have any additional questions or concerns, do not hesitate to contact us directly or by resubmitting a question on this Q&A website. -Kind Regards-