Lennox SL280V Variable-Speed, Two-Stage Gas Furnace

Reliable 80% AFUE Efficiency with Two-Stage Heating, Variable-Speed Comfort, and Ultra-Quiet Operation

Overview

The Lennox SL280V Variable-Speed Gas Furnace from the Dave Lennox Signature® Collection is designed to deliver consistent indoor comfort with quiet, dependable performance. With an efficiency rating of up to 80% AFUE, its two-stage heating system adjusts heat output to better match your home’s needs, helping reduce temperature fluctuations. The variable-speed blower provides a steady flow of air, while SilentComfort™ technology and sound-absorbing insulation help minimize operating noise. 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 when paired with compatible equipment.

Brand

Lennox

Specifications

Specification Details
Brand Lennox
Product Name SL280V Variable-Speed 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%
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
Installation Configuration Upflow/Horizontal or Downflow, depending on model
Heating Input Varies by model; approximately 66,000–132,000 BTU/h for listed configurations
Electrical Requirements Model-dependent; listed configurations include 115 VAC, single-phase, 60 Hz
Warranty Limited parts and heat exchanger warranties; coverage and optional extensions depend on model, eligibility, and warranty terms
Price Guide $$$

Features

  • Up to 80% AFUE Efficiency: Converts up to 80% of the fuel it consumes into usable heat.
  • Two-Stage Heating: Adjusts between two heating levels to better match your home’s comfort needs.
  • Variable-Speed Blower Motor: Delivers a more consistent airflow and helps minimize temperature fluctuations.
  • SilentComfort™ Technology: Designed for exceptionally quiet operation.
  • Sound-Absorbing Insulation: Helps reduce operating noise for a quieter indoor environment.
  • Enhanced Humidity Control: Helps support more comfortable indoor humidity levels.
  • Insulated Blower Compartment: Helps reduce sound and support quiet performance.
  • 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 for a dual-fuel system.
  • SureLight® Silicon Nitride Ignitor: Provides reliable electronic ignition.
  • Dave Lennox Signature® Collection: Designed to integrate with compatible Lennox comfort-system components.

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