Gas Furnaces

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

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59MN7

INFINITY® 98 GAS FURNACE WITH GREENSPEED™ INTELLIGENCE

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Model Family: 59MN7
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: Quiet operation

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

59TN6

INFINITY® 96 GAS FURNACE

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Model Family: 59TN6
Annual Fuel Utilization Efficiency: Up to 96.7% AFUE
Energy Star Rated: ENERGY STAR®
Blower Motor: Variable-speed, ECM blower motor
Gas Valve: Two-stages
Fan Heating Operation: Two-speed
Factory Warranty Parts: 10yr parts limited warranty
Heat Exchanger Warranty: Lifetime limited warranty
Sound Level: Quiet operation
Manufacturer's Stated Benefits:
  • Ideal Humidity System® technology capable to aid heat pump or air conditioner summer dehumidification
  • SmartEvap™ technology works in concert with your cooling system to aid summer dehumidification
  • ComfortFan™ technology allows fan-speed choices in
  • Comfort Heat Technology® feature intelligently stages heating cycles to reduce temperature swings and improve efficiency
  • Infinity intelligence enables self-configuration and easy troubleshooting with Infinity control
  • Fully insulated cabinet
  • Advanced temperature control
  • Includes air filter cabinet
  • Hybrid Heat® compatible
  • Aluminized steel clamshell-style primary heat exchanger
  • Stainless steel fin-and-tube design secondary heat exchanger

59SC2

COMFORT™ 92 GAS FURNACE

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Model Family: 59SC2
Annual Fuel Utilization Efficiency: Up to 92.0% AFUE
Energy Star Rated: All sizes meet ENERGY STAR® South regional standards
Blower Motor: Multi-Speed ECM blower motor
Gas Valve: Single-stage
Fan Heating Operation: Fixed-speed
Factory Warranty Parts: 10 yr parts limited warranty
Heat Exchanger Warranty: 20-year heat exchanger limited warranty
Sound Level: QuieTech™
Manufacturer's Stated Benefits:
  • Hybrid Heat® compatible
  • Pilot-free, hot surface PowerHeat™ ignition
  • Aluminized steel clamshell-style primary heat exchanger
  • Stainless steel fin-and-tube design secondary heat exchanger
  • Sound reduction: fully insulated cabinet and QuieTech™ noise reduction
  • Recommended controls: Performance™ Edge® relative humidity or ComfortZone™ II thermostats
  • ComfortFan™ technology allows fan-speed choices in
  • Fully insulated cabinet
  • All units meet California Air Quality Management District emission requirements, are design certified in Canada, and are certifi
  • Self-diagnostics with SuperBrite LED

58SB

COMFORT™ 80 GAS FURNACE

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Model Family: 58SB
Annual Fuel Utilization Efficiency: 80.0% AFUE
Energy Star Rated: No
Blower Motor: Multi-speed ECM blower motor
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
  • Hybrid Heat® compatible

See What Our Customers Are Saying

Years of Experience and Reviews
  • “This is the best experience I've ever had getting work done on my house. My AC stopped working and Nick was able to locate the issue and offer me an affordable fix.”

    - Rachel G.
  • “We were fortunate to find Nick and Dunes Heating & AC soon after moving to Mt. Pleasant.”

    - Brian E.
  • “Seldom do I have the chance to provide a contract service five stars. I was totally pleased with the service Dunes Heating and Air Conditioning provided me.”

    - Paul V.

Contact Us Today

Call us at (843) 892-5444 or fill out the form below to schedule a service!

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