Where should I look for a units FE rating ?
For fireplaces, the FE rating appears on a special EnerGuide label printed in the manufacturer’s product literature. Different models might be shown in a separate chart, which may also list other energy efficiency ratings. EnerGuide Label for Gas Fireplaces Sample Labels This label appears in product literature that describes a single model of fireplace. Notice that the EnerGuide FE rating is printed right on the label.