Place the comforter in your dryer. If your dryer is not large enough to comfortably fit the comforter, take it to a Laundromat and use one of the large capacity dryers, or proceed to Step 3 to air dry it.
Dry the comforter on the lowest heat setting. It may take several cycles to completely dry a polyester-filled comforter, especially one that is a queen or king size. You can take the comforter out early, though, to finish by air drying it.
Hang the comforter over a clothes line, or strategically place a couple chairs so you can drape the comforter over the top of them. Indoors, set up a fan to speed up the drying process. You can air dry a polyester comforter right from the washer, or after partially drying from a dryer.