Lennox SL280NV Variable-Speed, Ultra-Low Emissions Gas Furnace
Reliable 80% AFUE Efficiency with Two-Stage Heating, Ultra-Low NOx Emissions, and Quiet Variable-Speed Comfort
Overview
The Lennox SL280NV Variable-Speed, Ultra-Low Emissions Gas Furnace from the Dave Lennox Signature® Collection is designed to deliver dependable heating, quieter operation, and reduced emissions. With an efficiency rating of up to 80% AFUE, its two-stage heating system adjusts between lower and higher heat output to help maintain balanced indoor temperatures while using energy more effectively. The variable-speed blower gradually adjusts airflow to distribute warmth evenly and reduce sudden blasts of air. SilentComfort™ technology and sound-absorbing insulation help minimize operating noise, while the furnace’s ultra-low NOx design produces up to 65% lower nitrogen oxide emissions than standard low-NOx furnaces. Additional features include enhanced humidity control, smart thermostat compatibility, dual-fuel capability, and a durable steel cabinet.
| Brand | Lennox |
|---|
Specifications
| Specification | Details |
|---|---|
| Brand | Lennox |
| Product Name | SL280NV 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 80% |
| 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 | Compatible Lennox communicating thermostats, including S40 |
| Heat Exchanger Warranty | 20-Year Limited Warranty |
| Other Warranty Coverage | Depends on model, registration, eligibility, and applicable terms |
| Heating Input | Varies by model; published configurations include 60,000–100,000 BTU/h |
| Installation Configuration | Upflow/Horizontal or Downflow, depending on model |
| Electrical Requirements | Model-dependent; verify the selected model’s specifications |
| Price Guide | $$$ |
| Availability | Regional |
Features
- Up to 80% AFUE Efficiency: Converts up to 80% of the fuel consumed into usable heat.
- Ultra-Low NOx Emissions: Designed to produce up to 65% lower nitrogen oxide emissions than standard low-NOx furnaces.
- Two-Stage Heating: Offers low- and high-heat operation to help maintain balanced temperatures and adjust heating output to demand.
- Variable-Speed Blower Motor: Gradually adjusts airflow for more even heat distribution and consistent indoor comfort.
- SilentComfort™ Technology: Helps minimize operating noise.
- Sound-Absorbing Insulation: Helps reduce sound during furnace operation.
- Enhanced Humidity Control: Supports comfortable indoor humidity levels when used with compatible system components.
- Insulated Blower Compartment: Helps support quieter operation.
- Air Filter and Humidifier Compatibility: Works with compatible indoor air quality accessories.
- Ultra-Low Continuous Fan: Provides continuous low-speed airflow when configured appropriately.
- Dual-Fuel Capability: Can be paired with compatible heat pump equipment.
- SureLight® Silicon Nitride Ignitor: Provides electronic ignition.
- Smart Thermostat Compatibility: Designed to work with compatible Lennox communicating controls, including the S40 thermostat.
- Durable Steel Cabinet: Built for dependable, long-term operation.
- 20-Year Limited Heat Exchanger Warranty: Subject to the applicable warranty terms and conditions.
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