Should i preserve the box to my microwave?
Answers: Depends. Are you planning on moving during the life of the microwave? If you are, next things are easier to move when you have the boxes. Even if you are planning on moving, do you enjoy anywhere to store it?
My husband and I have kept the boxes for our computers, printers, stereo, tv, etc. We plan on moving into a house surrounded by the next year or so from our apartment, and things are so much easier to pack when you hold the original boxes.
My parents maintain the boxes for everything, in casing they need to convey it in for repair. The problem is that more than possible, you won't have to convey it in. There is local repair shops surrounded by your area or the subsequent town. Now my p's house has lots boxes for things they don't have any more creating a fire see. I say recycle it along beside the Styrofoam!