Rheem Gas Furnaces – Classic Series 80% AFUE Upflow / Horizontal (R801S)

The Rheem Classic® Series Gas Furnace has all the right ingredients to create a comfortable home for you and your family. Industry-exclusive features deliver peace of mind. Our furnace is not only reliable, it’s also quiet. So you can stay focused on what matters most.


  • 80% residential gas furnace CSA certified
  • 3 way multi poise design UF / HZ
  • PlusOne™ Diagnostics
    7 Segment LED all units
  • PlusOne™ Ignition System
    DSI for reliability and longevity
  • Heat exchanger is removable
    For improved serviceability. Aluminized steel construction provides maximum corrosion resistance and thermal fatigue reliability.
  • Solid doors
    Provide quiet operation
  • Low profile 34″ cabinet
    Ideal for space constrained installations
  • Blower shelf design
    Serviceable in all furnace orientations
  • Hemmed edges on cabinets and doors
  • 1/4 turn door knobs
    For tool less access
  • Integrated controls board
    Features dip switches for easy system set up
  • QR codes
    For quick access to product information from your smart phone or tablet





Contact us at Eastside Heating & Air Conditioning, Inc. today to learn more about how we can assist you with your HVAC needs. We service the entire Denver metro area.