Regency Energy U31
B Vent Gas Insert

Regency U31 B-Vent unit heats 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.

Standard Features

  • Natural gas
  • Safety screen
  • Proflame remote control
  • Log set with glowing embers
  • Flame height adjustment control
  • Ceramic safety glass
  • Variable speed blower
  • Standing pilot system
  • Direct spark ignition
  • B Vent
  • Installation spacer
  • Limited lifetime warranty



  • Low profile faceplates
  • Custom backing plate
  • Contour faceplate
  • Black louvers
  • Brick panels
  • Wall thermostat
  • Regency flex venting
  • Propane conversion kit

Additional information


30,000 (Natural Gas)
27,500 (Propane)



EnerGuide Rating

51.42% (Natural Gas)
47.41% (Propane)

Minimum Fireplace Opening

Min. Fireplace Opening
Width (front) 26 1/2 in.
Width (back) 22 1/2 in.
Height 21 in.
Depth 15 in.

Product Video