It seems my secondary heat exchangers sprung a leak in my Lennox Pulse G14Q3-80-13 After speaking with my home warranty company, they are telling me my furnace is equivalent to the economy line 92 efficient single stage Lennox units of today. From my own research it seems the G14 Pulse was a bit more efficient. Should I push for one of the middle of the road Lennox’s or are they correct? I trust the opinions here much more than a home warranty company. Thank you in advance.