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Regency Energy™ E21 Small Gas Insert


This compact Energy Gas Insert is perfect for heating smaller living areas.  Regency quality is evident in every detail – from high efficiency heat to custom styling. The E21 features the dancing flames of an exceptional Regency fire.

Backed by the industry’s most comprehensive Limited Lifetime Warranty.

How it Looks:
Efficient upgrade to keep the heat in your home
The look of a wood fireplace with the convenience of gas
Heat radiating ceramic glass provides maximum viewing area
Realistic logs with beautiful flames and platinum infused bright embers
How it Works:
Proflame remote control (included)
Safety screen (included)
Whisper quiet variable speed blower to push the heat
Controllable heat with up to 50% flame turn down
B-vent application is ideal for older homes
Operates on natural gas or propane




Maximum BTU 23,500 22,500
Turn Down BTU 11,750 11,250
Efficiency 77.00% 77.00%
EnerGuide Rating 50.60% 53.48%
View Area 318 sq. in.
Room Size Small
Vent Type B-Vent

Min. Fireplace Opening*


Width (front) 26.5″
Width (back) 18″
Height 17.75″
Depth 14″
  • *Regency Contour Faceplate or Full Screen Door