Answer by
jijo67 (112)
P Payne offers 80% efficiency in their products like PG8M & PG8J. But their most efficient gas furnace is PG9M. It has a efficiency rating of 92.1%. Their model PG8DAA024050 has 80 % AFEU efficiency.Model PG9MAA060080 has 90 % efficiency. model py1ppa036080-c has 81% afeu and 82.1 steady state efficiency.