I looked online at digi-key, which is *the* ultimate place for all things electronic, and even they didn't stock 16A fuses.

I checked at the manufacturers website, and they have a replacement switch you can order which uses a standard 15A 1 1/4" fuse instead. However, since the fuse is integrated with the power switch, I decided to just take care of that myself, which was easy enough with a trip to home depot and radio shack. I added an in-line fuse holder to a replacement power cord and now everything is working fine. I also have a fuse that is easy to replace in the future.

As to why it blew, it is because the front radiator was clogged with dog hair. (argh) This has happened once before. Of course, the other open question is why did a 16 A fuse blow on a 15 A circuit? Alternatively, why do I need a 15 A fuse on a 15 A circuit? Finally, why is the fuse 15 A in the first place? I have measured the power consumption, and it is only about 7 A when it is running.