M5SB-Series 83% Oil Furnaces


  • All M5SB-Series Models are downflow-only.
  • Fully Insulated cabinets fit classic Manufacture Housing footprint. 
  • M5SB-***A-AW models come with no coil cabinet, M5SB-*** A-BW models have factory-installed 20” Coil Cabinet.
  • Optional 922594 field-installed 26” Coil Cabinet for use with M5SB-*** A-AW Models.
  • Reliable Burner with uniform flame pattern extends life of heat exchanger.
  • Sealed Combustion:  vents exhaust gases and draws in fresh air for combustion.   
  • Standard PSC Blower – Provides up to 3-Tons of AC/HP.
  • Accessory 4-Ton and 5-Ton blower kits available for larger A/C applications.