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Photo of 58SB0B, one crossover solution found at All Seasons HVAC.

Carrier 58SB0B Comfort™ 80 Crossover Gas Furnace

The Carrier 58SB0B is a reliable, budget-friendly gas furnace from the Comfort™ series. It is designed for homeowners who need a dependable heating solution with moderate efficiency. As an 80% AFUE non-condensing furnace, it vents through a chimney or roof and is ideal for regions with milder winters or as an affordable replacement for an older, less efficient furnace.

  • Features the QuieTech™ noise reduction system, making it one of the quietest induced-draft furnaces in its class.
  • Equipped with an NFC-enabled control board, allowing HVAC technicians to configure and troubleshoot the system quickly via a mobile app.
  • Its “4-way multipoise” cabinet is only 33-1/3 inches tall, allowing it to fit into low-ceiling basements, tight closets, or attics.

Efficiency

  • 80% AFUE (Annual Fuel Utilization Efficiency).
  • Single-stage operation for reliable, straightforward heating.
  • High-efficiency Multi 18-Speed Constant Torque (MCT) ECM motor. This motor provides better airflow control and lower electricity usage compared to older PSC motors.
  • Can be paired with a Carrier heat pump and a compatible thermostat to create a dual-fuel system that automatically switches between gas and electric heat for better cost management.
  • Cabinet air leakage is less than 2.0% at 1.0 in. w.c., meeting strict energy standards.

Comfort & Performance

  • The 18-speed motor allows installers to fine-tune airflow for both heating and cooling to ensure even temperatures throughout the home.
  • Built with aluminized steel in a “clamshell” design for long-lasting heat transfer and corrosion resistance.

Technology & Design

  • Features the Power Heat™ hot surface igniter, one of the most robust and durable pilot-free ignition systems available.
  • Includes a 3-digit status display on the control board for easy-to-read fault codes and system status, even after a power outage.
  • A draft safeguard switch ensures the furnace vents properly to prevent exhaust gases from entering the home.
  • Includes a specialized combustion setup and an insulated cabinet to keep operational noise to a minimum.
  • Offers 13 different venting options, including through-the-furnace downflow venting.
  • 20-gauge galvanized steel cabinet with a baked-on urethane base coat for superior protection.
  • Ships for natural gas but is easily convertible to propane (LP) with an optional accessory kit.

Warranty

  • Covered by Carrier’s Consumer Choice Warranty.
  • Heat Exchanger is Covered by 20-year limited warranty.

Carrier 58SB0B Comfort™ 80 Crossover Gas Furnace – At a Glance

Specification
Efficiency80% AFUE
Blower Motor18-Speed ECM (Constant Torque)
Height33-1/3 inches (Compact)
IgnitionPower Heat™ (No Pilot Light)
Installation4-Way Multipoise (Up, Down, L/R)
CompatibilityHybrid Heat® Dual-Fuel Ready

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