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Fujitsu Halcyon XLTH Extra Low Temp Heating
Model Number: AOU36RLXFZH
Industry-leading cold climate performance to -15°F.
Technical Specifications
23
SEER2
14
HSPF2
15.2
EER2
11.5
Cold Climate HSPF2
Noise Levels
Key Features
Extra Low Temp Heating
-15°F operation
90% capacity at 5°F
Powerful mode
Ion deodorizing filter
Pros & Cons
Pros
- Best-in-class cold performance
- High efficiency
- IRA eligible
- Fujitsu reliability
Cons
- Premium pricing
- Larger outdoor unit
- Multi-zone limited
Best for
Cold climate primary heat, oil replacement, maximum heating performance
Warranty snapshot
Compressor: 10 years
Parts: 5 years
Register equipment with the manufacturer after installation to preserve coverage. We handle registration on Home+ installs.
Expert Review
The Halcyon XLTH represents Fujitsu's premium cold climate solution, engineered specifically for regions with harsh winters. For Nassau County homeowners eliminating oil heat, this system provides the heating reliability needed for complete fossil fuel independence.
Technical Performance: Operating down to -15°F with 90% heating capacity at 5°F, the XLTH leads the industry in cold-weather performance. The 26.0 SEER2 and 12.5 HSPF2 ratings ensure exceptional efficiency year-round.
Nassau County Installation: We've installed these in Oyster Bay and Cold Spring Harbor where estate homes need reliable heating without backup systems. The low ambient heating technology injects refrigerant for enhanced cold-weather performance.
Rebates & Incentives: Full IRA tax credit eligibility ($2,000) plus PSEG Long Island rebates. Fujitsu's 12-year compressor warranty provides long-term confidence for cold climate applications.
Our Verdict: The ultimate choice for homeowners committed to eliminating oil heat. The XLTH's cold climate performance exceeds what most competitors can achieve, making backup heat unnecessary.
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Ready to Install the Halcyon XLTH?
Get a free, no-obligation quote for professional installation by NATE-certified technicians serving Nassau County. Don't forget—you may qualify for a $2,000 federal tax credit!


