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Trane S9X2 Two-Stage Gas Furnace
Model Number: S9X2D100U5PSB
Trane's high-efficiency two-stage furnace with 96% AFUE. Variable-speed blower delivers even heat and outstanding air filtration compatibility.
Technical Specifications
*Prices include equipment, installation, and standard warranty. Actual cost may vary.
Estimated Annual Savings
Compared to an 80% AFUE furnace
$200
per year
$3000
over 15 years
Why We Recommend This Model
The S9X2 is our most recommended Trane furnace for Nassau County homes. It provides 96% efficiency without the complexity and cost of a modulating unit. The variable-speed blower is the real star — it makes a noticeable difference in comfort and air quality.
Ideal For
Efficient heating with quiet two-stage operation
Expert Review: Trane S9X2 Two-Stage Gas Furnace
The Trane S9X2 delivers 96% AFUE efficiency with two-stage heating and a variable-speed ECM blower motor. This combination provides consistent temperatures throughout your home while running quieter than single-stage furnaces.\n\nThe two-stage gas valve operates at approximately 65% capacity for most of the heating season, only ramping to full output during the coldest Long Island nights. This means less cycling, more even temperatures, and lower gas bills. The variable-speed blower also improves air filtration by running longer at lower speeds.\n\nBuilt with Trane's signature durability, the S9X2 features a stainless steel primary heat exchanger and an insulated cabinet for quiet operation. It's compatible with Trane's CleanEffects™ whole-home air filtration system.
Key Features & Technology
Two-stage gas valve
Variable-speed ECM blower motor
Stainless steel primary heat exchanger
Insulated cabinet for quiet operation
CleanEffects™ compatible
ComfortLink™ II communicating capable
Self-diagnostic controls
Advantages
- 96% AFUE — excellent gas bill savings
- Variable-speed blower for even temperatures
- Whisper-quiet operation at 45 dB
- Stainless steel heat exchanger for durability
- Compatible with whole-home air purification
Considerations
- Not as efficient as modulating furnaces (97-98%)
- Premium pricing vs single-stage options
- Two-stage less precise than modulating control
Warranty & Protection
Parts Warranty
10-Year Limited
Heat Exchanger
Lifetime Limited
Our Guarantee
100% Satisfaction
All warranties require product registration within 60 days of installation. Our team handles registration for you.
Professional Installation
What's Included
- Complete equipment and materials
- Professional NATE-certified installation
- Permits and inspections
- Old system removal and disposal
- System testing and calibration
- Warranty registration
Installation Timeline
Free Consultation
Same-day or next-day
Installation Day
Typically 4-8 hours
Final Inspection
Ensure perfect operation
We've installed 55+ Trane S9X2 Two-Stage Gas Furnace units across Nassau County
Frequently Asked Questions
About Trane

Trane
Ranked #1 Overall
Long Island homeowners prioritizing long-term reliability, parts availability, and quiet operation
Get Your Free Quote
NATE-certified technicians serving Nassau County with expert Trane S9X2 Two-Stage Gas Furnace installation.
Get Free Quote (516) 345-3911Available 24/7 for emergencies
Why Home+ Air & Heat?
- NATE-certified technicians
- Same-day consultations available
- Financing options available
- 100% satisfaction guarantee
- Local Nassau County company
Related Resources
Ready to Install Your Trane S9X2 Two-Stage Gas Furnace?
Get a free, no-obligation quote from our NATE-certified technicians. We serve all of Nassau County with expert installation and a 100% satisfaction guarantee.
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