Lennox SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace
Up to 97.5% AFUE Efficiency with Ultra-Low NOx Emissions, Variable-Speed Comfort, and Quiet Performance
Overview
The Lennox SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace from the Dave Lennox Signature® Collection combines high energy efficiency with advanced home comfort and reduced emissions. With an AFUE rating of up to 97.5%, this ENERGY STAR® qualified furnace is designed to convert fuel into heat efficiently while helping reduce energy costs. Its two-stage heating system and variable-speed blower adjust performance to maintain more consistent indoor temperatures and distribute warmth evenly. SilentComfort™ technology and sound-absorbing insulation help minimize operating noise, while ultra-low NOx technology produces up to 65% lower nitrogen oxide emissions than standard low-NOx furnaces. Additional features include enhanced humidity control, an insulated blower compartment, compatibility with air filters and humidifiers, ultra-low continuous fan operation, and dual-fuel capability with compatible equipment.
| Brand | Lennox |
|---|
Specifications
| Specification | Details |
|---|---|
| Brand | Lennox |
| Product Name | SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace |
| Collection | Dave Lennox Signature® Collection |
| Product Type | Gas Furnace |
| Heating Stages | Two-Stage |
| Blower Motor | Variable Speed |
| Maximum AFUE Rating | Up to 97.5% |
| ENERGY STAR® Certified | Yes |
| NOx Emissions | Up to 65% lower than standard low-NOx furnaces |
| Quiet Operation | SilentComfort™ Technology and Sound-Absorbing Insulation |
| Humidity Control | Enhanced Humidity Control |
| Blower Compartment | Insulated |
| Air Filter Compatible | Yes, with compatible accessories |
| Humidifier Compatible | Yes, with compatible accessories |
| Continuous Fan | Ultra-Low Continuous Fan |
| Dual-Fuel Capable | Yes, with compatible equipment |
| Ignition System | SureLight® Silicon Nitride Ignitor |
| Smart Thermostat Compatibility | iComfort® S30 |
| Electrical Requirements | 115 VAC, single-phase, 60 Hz (verified for listed configurations) |
| Installation Configuration | Upflow/Horizontal; exact configuration depends on model |
| Heating Capacity | Varies by model |
| Warranty | Limited parts and heat exchanger warranties; terms depend on model and eligibility |
| Price Guide | $$$ |
| Availability | Regional; available in select parts of California |
Features
- Up to 97.5% AFUE Efficiency: Converts up to 97.5% of the fuel consumed into usable heat.
- ENERGY STAR® Certified: Meets applicable ENERGY STAR energy-efficiency requirements.
- Ultra-Low NOx Emissions: Produces up to 65% lower nitrogen oxide emissions than standard low-NOx furnaces.
- Two-Stage Heating: Adjusts between two heating levels to help maintain consistent indoor comfort.
- Variable-Speed Blower Motor: Adjusts airflow to distribute heat evenly and reduce temperature fluctuations.
- SilentComfort™ Technology: Helps minimize operating noise.
- Sound-Absorbing Insulation: Further reduces noise during operation.
- Enhanced Humidity Control: Helps maintain comfortable indoor humidity levels.
- Insulated Blower Compartment: Supports quieter operation.
- Air Filter and Humidifier Compatibility: Supports compatible indoor air quality accessories.
- Ultra-Low Continuous Fan: Provides low-speed continuous airflow when configured appropriately.
- Dual-Fuel Capability: Can operate as part of a compatible gas furnace and heat pump system.
- SureLight® Silicon Nitride Ignitor: Provides electronic ignition.
- iComfort® S30 Compatibility: Supports smart comfort control with compatible equipment.
- Dave Lennox Signature® Collection: Designed to integrate with compatible Lennox comfort-system components.
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