90+ GAS FURNACE COMPARISON
with image, control usage, heat exchanger materials, warranty, special features

AMAMA: AMV9/ACV9 2 stage heat, variable speed blower;  AMH95 2 stage, only uses single stage stat; AMS95/ACS9 single stage; see Goodman for Amana Distinctions models;  10 year free furnace if heat exch fails on original owner, 10 year parts

ARMSTRONG/AIR-EASE: Enhanced 95V 2 stage heat, variable speed blower; Enhanced 93 2 stage upflow only; Advantage 93; Tech 91 upflow only; 2 stage uses proprietary UTEC board; single stage use Honeywell controls; both use Norton shielded mini-ignitor; stainless steel heat exchangers; warranty lifetime/5 year parts

BRYANT: 355C, 3 stage heat, variable speed blower; 355 2 stage heat, variable speed blower; 352 2 stage; 350 single stage;  340 builder models;  proprietary controls, silicon nitride ignitor; aluminized steel primary heat exchanger; warranty lifetime heat exchanger except 340 which is 20 years; 5 year parts; 

CARRIER: Infinity MVC 3 stage heat, variable speed blower; MVB 2 stage heat, variable speed blower; MTB 2 stage heat;  MXB single stage ;  MCB  builder model;  proprietary controls, silicon nitride ignitors; aluminized steel primary heat exchanger; warranty lifetime heat exchanger except MCB which is 20 years; 5 year parts; 

COLEMAN,  LUXAIRE: CP9C,  97-98%, modulating using single stage stat, variable speed blower or CM9M with std blower; FC9T 2 stage; FC9M single stage; proprietary controls, hot surface ignition, aluminized tubular heat exchanger; lifetime heat exchanger, 5 year parts

 

 

DUCANE: CMPEV 2 stage heat,variable speed blower; CMPBC/CMPEU single stage heat; aluminized clamshell heat exchanger; lifetime heat exchanger, 5 year parts

 

GOODMAN/JANITROL:  GMV95/GCV93 2 stage heat, variable speed blower; GMH95/GCH93 2 stage heat, only uses single stage stat; GMS95 upflow single stage;  GKS92 single stage; White-Rodgers board with Norton mini ignitor; tubular aluminized steel primary; lifetime heat exchanger warranty, 10 year free furnace if heat exchanger fails (except GKS), 5 year parts

HEAT CONTROLLER (Century & Comfortaire): Conquest 90 2 stage heat; also single stage model; proprietary controls with spark ignition; stainless steel primary; warranty lifetime heat exchanger/5 year parts

ICP (Heil, Arcoaire, Comfortmaker, Tempstar): *9PMV 2 stage heat, variable speed blower, *9MPT 2 stage heat, *9MPC single stage, *9UHX single stage, N9MP2 2 stage heat, N9MP1 single stage; proprietary board with silicon nitride ignitors; stainless steel primary; branded models have lifetime heat exchanger warranty with 5 year furnace replacement; N models have 20 year, 5 year parts; * indicates first letter of brand, N models are the builder units 

LENNOX: G71V modulating with 2 stage stat, variable speed blower; G61V 2 stage heat variable speed blower, G61 2 stage heat, G51  single stage; builder model G43 single stage; W-R Intell-ignition; aluminized steel primary heat exchanger; warranty lifetime heat exchanger on new multiposition G61/51,  5 year parts;  Merit G43 20 year heat exchanger, 5 year parts

 NORDYNE MAYTAG: 95% 2 stage heat with variable speed blower; 95% 2 stage heat with fixed speed ECM blower; 92% single stage with std blower; proprietary controls with silicon nitride ignitor; 12 year parts & replacement warranty 

NORDYNE PREMIUM: (Tappan, Frigidaire, Westinghouse, NuTone) FG7TC/TL-V 2 stage heat, variable speed blower; FG7TC/TL 2 stage heat, fixed speed ECM motor; FG7SC/SL single stage heat; proprietary controls with silicon sitride ignitor; aluminized tubular heat exchanger; lifetime heat exchanger warranty; 10 year replacement pledge, 10 year parts to original owner 

NORDYNE: (Kelvinator, Philco, Gibson) 95%  2 stage heat, fixed speed ECM motor; single stage heat; proprietary controls with silicon sitride ignitor; aluminized tubular heat exchanger; lifetime heat exchanger warranty; 10 year replacement pledge, 10 year parts to original owner 

PAYNE: PG9YAA 95% variable speed blower; PG9MTAV 92% variable speed blower; P9GM single stage multiposition; proprietary controls with silicon carbide ignitor; aluminized steel heat exchanger; warranty heat exchanger 20 years, 10 year parts if registered

RHEEM/RUUD: *GFD/*GGD/RGJD modulating input variable speed blower; *GRK/*GRL/*GGK 2 stage; *GRA/*GTA single stage; 90RS/RT economy single stage; proprietary controls with spark ignition ; stainless steel heat exchangers except economy upflow; warranty lifetime heat exchanger (new furnace if heat exchanger fails on modulating models, 5 year parts, economy models 20 year heat exchanger [*R=Rheem U=Ruud]

TRANE/AMERICAN-STANDARD: *UH3/*DH3 3 stage, requires special communicating stat;  *UH2/*DH2 2 stage variable speed, *UX-R/*DX-R 2 stage, *UX/*DX single stage, *UC/*DC economy single stage; White-Rodgers Intell-ignition (White-Rodgers with standard silicon carbide ignitor on economy model); aluminized steel heat exchanger; warranty lifetime heat exchanger, 5 year parts [*=A for American-Standard T=Trane]

THERMOPRIDE: CHX/CDX 2 stage heat; CHB/CDB single stage; White-Rodgers controls with standard silicon carbide ignitor; 16 gauge stainless steel heat exchanger; warranty lifetime heat exchanger/5 year parts

WEATHERKING: single stage; proprietary board with spark ignition; stainless steel heat exchanger dowflow, aluminized steel upflow; warranty 20 year heat exchanger/5 year parts

YORK: GY9S single stage, PUR single stage; unknown controls with hot surface ignition; aluminized steel heat exchanger; warranty lifetime heat exchanger/5 year parts

 

YORK AFFINITY: PV9 2 stage heat, variable speed blower, PC9 modulating input with single stage stat, variable speed blower, PM9 modulating input with single stage stat, standard blower, PT9 2 stage heat, PS9 single stage; tubular aluminized steel primary; warranty lifetime heat exchanger/5 year parts

 

This info was gathered from literature and the manufacturers' web sites. Please let me know of any additions or corrections needed. E-mail me!