Electric Furnaces Model: CBX40UHV

Each Furnace comes with:

Quiet Operation:

  • SilentComfort™ technology—delivers the ultimate in quiet, consistent heating—up to nine times quieter than competitive models
  • Variable speed blower motor—ramps up and down slowly so there’s no sudden, noisy blast of air at start-up
  • Fully insulated cabinet—patented noise-reducing construction further minimizes operating sound to an industry-leading low level


Home Comfort:

  • Precise Comfort™ technology—automatically adjusts fan speed, heat and airflow capacity in increments as small as 1% for the ultimate in temperature control
  • AirFlex™ technology—offers custom settings which can be selected to meet each home’s specific year-round comfort requirements
  • Zoning-compatible design—works with Lennox’ Harmony III™ zoning system to deliver the right amount of comfort for up to four zones
  • Secondary heat exchanger—allows the furnace to achieve high efficiency levels by capturing additional heat
  • Variable speed blower motor—provides a quiet, consistent flow of air for enhanced temperature and humidity control
  • Variable-capacity operation—goes beyond typical low and high two-stage operation, varying output from 40% to 100%

Energy Efficiency:

Reliable Performance:

  • Duralok Plus™ heat exchanger—made of patented ArmorTuf™ steel to ensure high reliability and efficiency
  • SureLight® igniter—silicone nitride construction ensures long product life and reliable operation
  • SureLight control board—direct-readout diagnostics allow simple, quick troubleshooting
  • Limited Lifetime Warranty on heat exchanger
  • 10-Year Limited Warranty on covered components


*Not all system combinations apply. Verify