tomfoolery
And yes, you can replace a 15 amp outlet with 20 amp one. It makes thing safer!You can replace a 15A outlet with a 20A outlet provided the wire connecting the outlet to the panel is of the gauge specified under the NEC and your local code for a 20A circuit. Otherwise, you have a code violation and a definite safety hazard. And there is nothing inherently "safer" about a 20A line compared to a 15A line. If they are each properly installed, they are of equal safety.