energy™ u31 medium gas insert




Heat medium sized living areas in a wide range of styles with this fireplace insert. Whatever style you choose Regency quality and the exceptional fire will be a welcome addition to your home.

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


  • Maximum BTU 30,000
  • Turn Down BTU 20,600
  • Efficiency 76.00%
  • EnerGuide Rating 52.90%
  • View Area 361 sq. in.
  • Room Size Medium
  • Vent Type B-Vent
  • Fireplace Opening*
  • Width (front) 26.5″
  • Width (back) 22.5″
  • Height 21″
  • Depth 15″

*Regency Contour Faceplate or Full Screen Door


  • Whisper quiet variable speed blower to push the heat
  • Controllable heat with up to 50% flame turn down
  • Easy access waist height controls
  • B-vent application is ideal for older homes
  • Operates on natural gas or propane

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Additional information


Regency Fireplaces

Product Types

Gas Fireplaces, Traditional Fireplaces

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