Infinity 80% AFUE 70000 btuh 2-Stage Variable Speed Gas Furnace

58TN0A070C21--20 MFG #: 58TN0A070C21--20
Out of Stock
  • Availability: Available for Delivery
  • Category: 80% Gas Furnace
  • Warehouse Availability: MALD
  • Casing Width: 21"
  • Cooling Drive Size (CFM): 5 Tons (2000 CFM)
  • Family: Infinity
  • Furnace Btu Input: 70000
  • Gas Stages: 2-Stage
  • Nominal AFUE: 80%
  • Configuration: Upflow
  • AFUE: 80.00%
  • Blower Motor Type: Variable-Speed, Constant Airflow ECM
  • BTU Input: 66000
  • Configuration: 4-Way Multipoise
  • Electrical Phase: 1
  • Enrichment Status: Final
  • Equipment Type: Gas Furnace
  • Frequency: 60
  • Ignition Type: Silicon Nitride Hot Surface
  • Line Voltage (60Hz): 115V
  • Max Inlet Pressure: 13.6
  • Motor Phase: 1
  • Refresh Carrier Documents: Done
  • Refresh Carrier Images: Done
  • Refresh Carrier Images: Done
  • Sx.e Status: Active
  • Sx.e Stocking Unit: Each
  • Sx.e Vendor: Carrier
  • Tonnage: 5
58 = 80% Gas Furnace
T = Heating stage - Two Stages
N = Tier - Infinity
0 = Efficiency - 80% AFUE
A =Series - 1
070 = 70,000 Btuh
C = Motor - Constant Airflow VS
21 = Cabinet Width - 21.0
20 = 2000 CFM


  • 80.0% AFUE heating efficiency
  • Two-stages of heat for economical operation
  • Variable-speed, constant airflow ECM blower motor for ultimate comfort and ultra-quiet operation and exceptional electrical motor efficiency
  • Ideal Humidity System® technology capable to aid heat pump or air conditioner summer dehumification
  • SmartEvap technology works in concert with your cooling system to aid summer dehumidification
  • ComfortFan technology allows fan-speed choices in "Constant ON" mode
  • Infinity intelligence enables self-configuration and easy troubleshooting with Infinity control
  • Fully insulated cabinet
  • Advanced temperature control
  • Low NOx models available (58TN1)
  • 10-year parts limited warranty upon timely registration1
  • Lifetime heat exchanger limited warranty upon timely registration2


  • Optional labor warranty available3

1 To the original owner, when product is used in an owner-occupied residence, a 10-year parts limited warranty upon timely registration of your new equipment. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details.

2 To the original owner, when product is used in an owner-occupied residence, a 20-year heat exchanger parts limited warranty upon timely registration of your new equipment. See warranty certificate for details.

3 Ask your Carrier® dealer for details.


  • 80.0% AFUE


  • Low stage operation up to 90% of time for quiet, energy-efficient operation
  • Allows 4 choices of "constant ON" fan speed operation
  • Hybrid Heat® compatible
  • Exceptional year-round humidity management when installed as part of complete Infinity system with added humidifier
  • Variable-speed blower makes it the best choice for boosting SEER efficiency when matched with appropriate cooling system components


  • Two-stage gas valve
  • Variable-speed, ECM blower motor
  • Pilot-free, hot surface PowerHeat ignition
  • Two-speed inducer motor
  • Aluminized steel clamshell-style primary heat exchanger
  • Sound reduction: fully insulated cabinet and QuieTech noise reduction
  • Infinity level advanced diagnostic intelligence
  • Recommended control: Infinity control


  • 45,000- 135,000 Btu/h


  • Flexible installation: upflow, downflow or horizontal
  • Versatile venting for tight-fit applications


  • 115 V
  • .5" gas connection
  • Convertible to Liquid Propane (LP)


  • 20-gauge, galvanized steel with appliance finish
  • Baked on urethane base coat and polyester top coat paint in taupe metallic
  • Dimensions in upflow position: 33.25"H x width varies by size: 14.25-24.5" x 29"D