Does a device with DC have a longer life than AC?

[Shervan360]

Hello,

Suppose we have two split Air conditioners or freeze/refrigerator compressors. First works with AC and second works with DC.
Which one has a longer life?
What are the pros and cons of compressor work with AC vs DC?

Thank you

 

[Darkwood]

Depends on a lot of factors to be honest, the motors been a key part and how they are controlled, back in the day everything was over engineered to last but nowadays we see a slippery slide into mass manufacturing and cheap controls so a difficult question to answer especially as we don't really bring people in to service anything now until it fails.