Current System AFUE New/Upgraded System AFUE
55% 60% 65% 70% 75% 80% 85% 90% 95%
50% $9.09 $16.76 $23.07 $28.57 $33.33 $37.50 $41.24 $44.24 $47.36
55% ---- $8.33 $15.38 $21.42 $26.66 $31.20 $35.29 $38.88 $42.10
60% ---- ---- $7.69 $14.28 $20.00 $25.00 $29.41 $33.33 $37.80
65% ---- ---- ---- $7.14 $13.33 $18.75 $23.52 $27.77 $31.57
70% ---- ---- ---- ---- $6.66 $12.50 $17.64 $22.22 $26.32
75% ---- ---- ---- ---- ---- $6.50 $11.76 $16.66 $21.10
80% ---- ---- ---- ---- ---- ---- $5.88 $11.11 $15.80
85% ---- ---- ---- ---- ---- ---- ---- $5.55 $10.50
90% ---- ---- ---- ---- ---- ---- ---- ---- $5.30