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.

  • 30,000 maximum natural gas BTU and 27,500 maximum propane BTU
  • 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
  • Efficient upgrade to keep the heat in your home
  • Firebox mimics the style and elegance of a real wood fire
  • Heat radiating ceramic glass provides maximum warmth
  • Realistic logs with beautiful flames and platinum infused bright embers


Front Width26.5"
Back Width22.5"
Glass size/ view area 361 sq. in.
Maximum BTU/ Hour Input 30,000 (natural gas) 27,500 (propane)
Turn Down BTU20,500 (natural gas) 22,000 (propane)

Efficiency Chart

Steady State76% natural gas and propane
EnerGuide52.9% natural gas 48.07% propane