Gas Furnaces

Today's new high efficiency furnaces can save up to 50% in operating costs over a ten-year-old furnace. Many 1990 and earlier model furnaces have Annual Fuel Utilization Efficiency (AFUE) ratings of 65% or less. The minimum AFUE rated furnace that can be sold in the United States today is 80%.

Our current product offering starts at 80% AFUE and goes all the way to a very efficient 96.6% AFUE rating. Depending on your average usage, higher AFUE rated furnaces can significantly reduce your gas bill.

We offer many furnaces with variable and multi-speed features that can provide enhanced indoor comfort by slowly ramping up to your thermostat setting rather than simply turning on at full speed. This alleviates the "cold air blow" often associated with single speed furnaces, and dramatically reduces system noise.

Gas Furnace Product Offering


Infinity® 98 Gas Furnace With Greenspeed™ Intelligence

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Model Family: 59MN7B
Annual Fuel Utilization Efficiency: Up to 98.5% AFUE
Energy Star Rated: ENERGY STAR®
Blower Motor: Variable-speed, ECM blower motor
Gas Valve: Patented gas valve modulates in 1% increments between 40-100%
Fan Heating Operation: Variable-speed / modulates
Factory Warranty Parts: 10 year parts limited warranty
Heat Exchanger Warranty: Limited Lifetime Warranty
Sound Level: QuieTech™
Manufacturer's Stated Benefits:
  • Greenspeed™ Intelligence
  • Highest degree of electrical efficiency among Carrier furnaces
  • Load matching performance delivers just the amount of heat needed for longer, quieter run times while minimizing energy use.
  • Best temperature control management among Carrier® furnaces
  • HybridHeat® compatible with this model.
  • Exceptional year-round humidity management when installed as part of complete Infinity system with added humidifier
  • In zoned systems improves airflow control for greater comfort in your home.
  • SmartEvap™ techology
  • Pilot-free, hot surface PowerHeat™ ignition
  • Stainless steel fin-and-tube design secondary heat exchanger
  • Sound reduction: fully insulated cabinet and QuieTech™ noise reduction
  • Infinity level advanced diagnostic intelligence

Performance Boost 80 Gas Furnace

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Model Family: 58SP0A
Annual Fuel Utilization Efficiency: 80% AFUE
Energy Star Rated: No
Blower Motor: Variable Speed ECM Blower Motor
Gas Valve: Single stage
Fan Heating Operation: Single speed
Factory Warranty Parts: 10-year parts limited warranty
Heat Exchanger Warranty: 20-year heat exchanger limited warranty
Sound Level: QuieTech™
Manufacturer's Stated Benefits:
  • Microprocessor based control center
  • Dehumidification selection for summer-time cooling
  • SmartEvap™ feature-Humidity control when using a Thermidistat™ Control
  • Adjustable heating air temperature rise
  • Adjustable cooling airflow
  • ComfortFan™- Adjustable constant fan speed from the thermostat
  • LED diagnostics and self test feature
  • Stores fault codes during power outages
  • 4-way Multipoise furnace, 13 vent applications
  • Power Heat SiN™ igniter
  • Draft safeguard switch to ensure proper furnace venting
  • Insulated blower compartment
  • HYBRID HEAT™ Dual Fuel System compatible

Comfort™ 80 Gas Furnace

Model Family: 58SB0A
Annual Fuel Utilization Efficiency: 80.0% AFUE
Energy Star Rated: N/A
Blower Motor: Fixed-Speeds Constant Torque ECM (FCT)
Gas Valve: Single-stage
Fan Heating Operation: Fixed-speed operation
Factory Warranty Parts: 10-year parts limited warranty
Heat Exchanger Warranty: 20-year heat exchanger limited warranty
Sound Level: Quiet operation
Manufacturer's Stated Benefits:
  • Fully insulated cabinet
  • Twinnable