The first time I tried to hatch eggs I went to Trader Joes (a grocery store) and bought a dozen organic fertilized eggs taken right out of their cooler. Set them on the kitchen counter over night and stuck them in a styrofoam incubator the next morning. Didn't know a thing about hatching eggs. 3 of 12 hatched. Two of those were deformed; turns out I had the incubator too hot. So, I would say that yes, you can hatch refrigerated eggs. Hatch rates may vary. I my low yield was probably at least partially due to my lack of experience and poor temperature / humidity control.