Before you select a wood pellet fireplace, be sure you understand the type of fuel the fireplace can burn. You may want one that only burns wood pellets because you live in an area where those are the only types of pellets available. Or you may want one that can burn a wide variety of biofuels, as mentioned earlier in this article. You'll want to select the wood pellet fireplace that can burn the type of fuel you prefer and that you can obtain easily.
You may also want to study up on the different grades of wood pellets. A standard grade consists of more ash than does a premium grade, so while standard-grade pellets will be less expensive, they'll also burn less cleanly than the more expensive premium grade. Lower-quality pellets will also result in higher maintenance because of higher ash production, so you'll be cleaning the unit more often.