Nordik 34i Gas Fireplace Insert
Efficiencies. ENERGUIDE P.4 NG/LP | 69.57% / 69.53%; Steady State NG/LP | 70.95% /71.08%; AFUE % NG/LP | 70.72% / 70.80% . Efficiencies Glossary: P.4 Efficiency (ENERGUIDE) is an efficiency rating more recognized in Canada to measure annual fireplace efficiency.; Steady State Efficiency is a measure of how efficiently your …