59SC6A100M21--20
59 = 90%+ Condensing Furnace
S = One Stage Gas Valve
C = Comfort Series
6 = +96% AFUE
A = Major Series
100 = 100,000 BTU Heating Capacity
M = Multi 18 Speed Constant Torque ECM
21 = 21" Casing Width
- = Voltage
- = Minor Series
20 = 2000 CFM

Standard Features

• Multi 18-speed, constant torque (MCT) ECM blower motor for electrically efficient operation
• Single speed inducer motor and single−stage gas valve
• SmartEvap^TM dehumidification prevents condensate buildup on the coil¹
• Adjustable blower speed for heating and cooling
• 4-way multipoise design with unique venting elbow
• Two-pipe venting, single-pipe venting or ventilated combustion air.
• All sizes meet ENERGY STAR Version 4.1 criteria for gas furnaces: 95+ AFUE
• Convertible to propane with accessory kit
• Approved for Twinning applications with accessory kit (060−12through 120−22 models only)
• Approved for Manufactured Housing/Mobile Home applications with MH accessory kit. (40−10 through 120−22 models only)
• 10-year parts limited warranty²

¹Requires compatible thermostat²See warranty certificate for details