I have a Lennox furnace that is 27 years old, and is very inefficient. I live in Dayton, Ohio. Manual J comes out to 99000 on coldest day. All units are over 90,000 btu or over. Which manufacturer makes the most efficient system.
Westinghouse systems is:
Model FG6TL1---CVB with matching 3 ton coil
model FT5DB036K Heatpump
White-Rodgers 90 serise thermstat.
Model RGGD-10EZCMS Furnace with RCFLHM3621 coil
Model RPNL-036JAZ Heatpump
Rheem Termostat 41-24312-04
Model G61MPV-36C-090 Furnace
Model XP140-36 Heatpump
Model CR33-48C Coil W 49L25TXV
Line set L15-41-50
Model T8000 W/ OD sensor Thermostat
Companies look sound and check out with the local BB. Warranties are all close to the same.
Any thought advice would be helpful and appreciated.