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What size furnace should I buy?

Square FootageFurnace BTU
1,000-1,200 sq. ft. Home40,000 - 60,000 BTU
1,200-1,500 sq. ft. Home60,000 BTU
1,500-1,800 sq. ft. Home60,000 - 80,000 BTU
1,800-2,500 sq. ft. Home80,000 - 100,000 BTU
2,500-3,500 sq. ft. Home100,000 to 120,000 BTU
Carrier Infinity® Series 96 – 59TN6 Review
Carrier Infinity® Series 96 – 59TN6 Review

Carrier Infinity® Series 96 – 59TN6 Review

AFUE: Up to 96.7%
ENERGY STAR ®: Yes
Burner Type: Dual Stage
Blower Type: Variable Speed
Price: $6,000 to $6,600
BTU Output: 58,000 – 117,000
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Carrier Infinity® 96 – 59TN6 Review

The Carrier Infinity® 96 – 59TN6 is a premium, two-stage, variable-speed furnace designed for exceptional comfort, quiet performance, and high energy efficiency. Controlled by Carrier’s advanced Infinity Control, this model stands among the brand’s top-performing furnaces — ideal for homeowners who value consistent warmth and long-term savings on energy bills.

Overview

Average Installed Price: $6,000 – $6,600
AFUE: 96.7%
Burner Type: Two-Stage
Blower Type: Variable-Speed ECM
ENERGY STAR® Certified: Yes

Key Features

  • Two-Stage Heating Efficiency: Operates mostly at a lower stage to conserve fuel while seamlessly shifting to high power during colder temperatures.

  • Variable-Speed Blower: Adjusts airflow for quieter performance, improved comfort, and better humidity control throughout the year.

  • ComfortFan™ Technology: Offers multiple fan-speed options in “Constant ON” mode when paired with the Infinity smart thermostat.

  • Ideal Humidity System™ Compatibility: Combine with an Infinity Control, humidifier, and outdoor unit for precise humidity management in all seasons.

  • Hybrid Heat® Capability: Can operate as a dual-fuel system when paired with a compatible thermostat and heat pump.

  • SmartEvap™ Technology: Helps manage indoor humidity during the cooling season.

  • Quiet Operation: Insulated cabinet, sealed combustion system, and ECM motor minimize operating noise.

Additional Highlights

  • Compatible with both natural gas and propane

  • Multiple installation configurations: upflow, downflow, and horizontal

  • Can boost air conditioner SEER ratings when paired with the right cooling system

  • Available in multiple sizes for different home requirements

The Bottom Line

The Infinity 96 – 59TN6 delivers a near-perfect balance of efficiency, performance, and quiet operation. Its two-stage design ensures comfort without wasting energy, while the variable-speed blower maintains even temperatures and optimal humidity levels.

Although it comes at a higher price point, this model’s superior build quality and advanced features justify the investment for homeowners seeking premium performance and long-term reliability.

Warranty Coverage

Carrier backs the Infinity 96 with a lifetime heat exchanger warranty and a 10-year limited parts warranty (registration required within 90 days of installation).
Unregistered units are covered for 20 years on the heat exchanger and five years on parts.
To maintain warranty eligibility, ensure installation is done by a licensed HVAC professional.

Model Comparisons

1. Infinity 96 – 59TN6 vs. Comfort 92 – 59SC2

Price: $3,800 – $4,800 (installed)
The Comfort 92 is a budget-friendly, single-stage furnace with a 92.1% AFUE — below Canada’s current minimum efficiency requirement of 95%. It’s noisier and less efficient than the Infinity 96, making it suitable only for smaller homes or mild climates.
Verdict: The Infinity 96 is far superior in comfort, efficiency, and long-term value.

2. Infinity 96 – 59TN6 vs. Comfort 95 – 59SC5

AFUE: 96.5%
Operation: Single-Stage
Blower: Multi-Speed ECM

The Comfort 95 offers a solid efficiency rating and ENERGY STAR® certification at a lower cost. However, its single-stage design can’t match the temperature consistency or quiet operation of the Infinity 96.
Verdict: The Comfort 95 is a good mid-range option, but the Infinity 96 offers a noticeable performance upgrade.

3. Infinity 96 – 59TN6 vs. Infinity 98 with Greenspeed® Intelligence – 59MN7

The Infinity 98 – 59MN7 is Carrier’s most advanced furnace, featuring modulating operation and Greenspeed® Intelligence for precise temperature control and maximum efficiency (up to 98.5% AFUE).
It’s ideal for homeowners who want top-tier comfort and are willing to invest in Carrier’s flagship technology.
Verdict: The Infinity 96 offers a balance between cost and performance, while the Infinity 98 is the ultimate in comfort and efficiency.

Final Thoughts

If you’re seeking a high-performance, energy-efficient furnace that delivers consistent comfort, quiet operation, and premium build quality, the Carrier Infinity® 96 – 59TN6 is an outstanding choice.
While it’s priced in the premium tier, its performance and energy savings make it a smart long-term investment for cold Canadian winters.

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