Carrier Performance™ Series 90 – 59SP2

Square Footage	Furnace BTU
1,000-1,200 sq. ft. Home	40,000 - 60,000 BTU
1,200-1,500 sq. ft. Home	60,000 BTU
1,500-1,800 sq. ft. Home	60,000 - 80,000 BTU
1,800-2,500 sq. ft. Home	80,000 - 100,000 BTU
2,500-3,500 sq. ft. Home	100,000 to 120,000 BTU

Carrier Performance™ Series 59SP2 Furnace Review

DISCONTINUED:
Please note that the Carrier 59SP2 appears to have been discontinued by the manufacturer. However, it may still be available for purchase through select distributors and HVAC contractors while supplies last.

The Carrier Performance™ Series 59SP2 is a dependable and moderately efficient gas furnace designed to deliver consistent comfort, quiet operation, and solid performance. As part of the Performance Series lineup, it offers a good balance between affordability and energy efficiency.

This model also includes SmartEvap™ technology, which enhances summer dehumidification when paired with a compatible cooling system. The system periodically pauses the fan during “constant fan” mode, allowing condensation to drain away effectively. This process reduces re-humidification by up to 10%, helping maintain balanced humidity and a more comfortable indoor environment.

🔹 In a Nutshell

Average Installed Price: $4,835 – $6,170

Top Features

AFUE Rating: 92 – 92.1%
BTU Input: 40,000 – 120,000
BTU Output: 37,000 – 111,000
Single-Stage Gas Valve with ECM, High-Efficiency Blower
Hybrid Heat® Compatible
SmartEvap™ Technology for improved humidity control

🔸 The Bottom Line

The 59SP2 offers homeowners a reliable combination of quiet operation, energy efficiency, and cost-effectiveness. As a single-stage furnace, it’s best suited for smaller to medium-sized homes or areas with moderate winter climates.

Compact and versatile, the 59SP2’s 35-inch cabinet height allows for flexible installation in tight or low-clearance spaces, making it an excellent option for retrofit or replacement projects.

If you’re looking for a budget-friendly Carrier furnace that still delivers steady comfort and solid performance, the Performance™ 59SP2 is a dependable choice.

⚙️ In-Depth Review: Carrier Performance™ 59SP2

Core Performance Features

High-Efficiency ECM Blower Motor
Enhances airflow control, reduces noise, and improves comfort by adjusting fan speeds.
Single-Stage Gas Valve & Inducer Motor
Provides consistent heating while maintaining operational simplicity and lower upfront cost.
SmartEvap™ Dehumidification Function
Works with your cooling system to reduce indoor humidity by up to 10%, promoting year-round comfort.
Humidistat™ Control Compatibility
Allows better regulation of indoor moisture when paired with a whole-home humidifier.
Aluminized-Steel Primary Heat Exchanger
Built for durability and corrosion resistance, ensuring long-term efficiency.
Pilot-Free Hot Surface Ignition (PowerHeat™)
Offers reliable startup without wasting fuel.
Self-Diagnostics with SuperBrite LED
Simplifies troubleshooting and maintenance for HVAC technicians.

🧩 Other Key Features

Multiple fan-speed options in Constant ON mode
Adjustable blower speeds for dehumidification, cooling, and continuous operation
Silicon Nitride PowerHeat™ Hot Surface Igniter for longer lifespan
Fully insulated cabinet to minimize sound and heat loss
Compact 35” height for flexible installation

🔇 Noise-Reducing Features

The 59SP2 is equipped with QuieTech™ noise reduction technology and a fully insulated cabinet that significantly lowers sound levels.

Its ECM blower motor provides smooth, quiet airflow transitions, while the sealed combustion system draws air directly from outside the home — reducing both operational noise and indoor air disturbance.

🌡️ Temperature & Humidity Control

ComfortFan™ Technology: Offers variable fan speeds in constant operation mode for improved air circulation.
Comfort Heat Technology®: Minimizes temperature swings and maintains consistent warmth.
Ideal Humidity System®: Works alongside SmartEvap™ to provide enhanced summer dehumidification when installed as part of a complete Carrier Performance system.

🧾 Warranty Information

The Carrier 59SP2 comes with:

Lifetime Heat Exchanger Warranty
10-Year Limited Parts Warranty
Optional Labor Warranty available through your dealer

Make sure to register your furnace within 90 days of installation to receive full warranty coverage.

🔍 Comparable Carrier Models

1. Model Comparison by Features: 59SP2 vs. 59SC2A

Both models offer an AFUE of around 92% and similar BTU inputs (40,000–120,000). Each uses a sealed combustion system and insulated cabinet for quiet operation. However, the 59SP2 belongs to the Performance Series, offering slightly better humidity control and airflow performance.

2. Model Comparison by Price: 59SP2 vs. 59SC2A

59SP2: $4,000 – $4,500 (installed)
59SC2A: $3,120 – $3,300 (installed)
While both are budget models, the 59SP2 offers a few more comfort-enhancing features that justify the higher cost.

3. Model Comparison by Tier: 59SP2 vs. Greenspeed® Intelligence 59MN7A

The 59MN7A is a premium-tier model with Greenspeed® Intelligence and an AFUE of 97.2–98.5%, offering significantly higher efficiency and advanced modulation technology.

In contrast, the 59SP2 is a budget-friendly furnace, offering dependable heating, solid efficiency, and quiet operation at a lower price point.

✅ Final Verdict

The Carrier Performance™ Series 59SP2 is a solid mid-range furnace that balances cost, comfort, and quiet performance. While it’s less efficient than modern high-end models, it still provides reliable heating, consistent airflow, and enhanced humidity control — all at a reasonable price.

For homeowners seeking a dependable and quiet gas furnace without the premium price tag, the 59SP2 remains a worthwhile choice—especially if you find one still available through distributors.