Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Napoleon S20i Wood Fireplace Insert

Approx. Heating Area: 800 - 1,800 sq. ft. Max Output: 65,000 BTU/h Starting at $3299

Approx. Heating Area: 800 - 1,800 sq. ft. Max Output: 65,000 BTU/h Starting at $3299



Product Details:

The Napoleon S20i wood fireplace insert features outside dimensions on the smaller side so it is able to be installed in most existing fireplace openings. The minimum fireplace opening for the Napoleon fireplace insert is 25 7/8" wide x 22" high x 14" deep. While the S20i fireplace insert measures smaller than other Napoleon inserts, it's heating capacity is impressive at 800 - 1,800 square feet with a 1.9 cu. ft. firebox capacity.

This Napoleon wood insert has everything you are looking in heating capacity as well as appearance. This unit has a modest sleek design and features hidden door hinges. The door is fabricated with the viewer in mind by offering a large glass surface area to view the fire.

    Specifications & Manual

    Napoleon S20i Wood Insert Manual

    Napoleon S20i Wood Insert Dimensions

    Napoleon S20i Insert Specifications
    Minimum fireplace opening (Width) 25 7/8"
    Minimum fireplace opening (Height) 22"
    Minimum fireplace opening (Depth) 14"
    Firebox dimensions (Width) 25 3/8"
    Firebox dimensions (Height) 20 1/2"
    Maximum log length 16"
    Type of Door Single, glass with cast iron frame
    Glass Surface 15 5/8" x 9 3/4"
    Weight 285 lb
    Firebox volume (cu. ft.) 1.9
    Glass Type Ceramic glass
    Depth - Overall 26 1/2"
    Height - Overall 21 3/4"
    Width - Overall 25 3/8"
    Canadian Standard (emissions) CSA B415.1-10
    USA standard (emissions) EPA
    Canadian Standard (safety) ULC-S628
    USA standard (safety) UL 1482
    Maximum output - seasoned cord wood 65,000 BTU/h
    Type of Fuel Wood
    Type of Chimney (°F) Liner - ULC-S635, CAN/ULC-S640, UL1777
    Minimum chimney height (feet) 15'
    Log positioning Over width
    Recommended Heating Area (sq. ft.) 800-1,800
    Steel thickness (top) 5/16"
    Optimum efficiency 72%
    Emissions (grams/hour) 2.25 g/h
    Recommended chimney diameter 6"
    Warranty President's Limited Lifetime

    Minimum Clearances to Combustibles

    Napoleon S20i Insert Minimum Clearances to Combustibles*
    Clearance - top (measured from the platform on which the appliance is installed)** 84"
    Clearance - combustible mantle to unit 30"
    Clearance - side wall to unit 16"
    Clearance - minimum floor protection in front of the fireplace 22"
    * The information given on the certification label affixed to the appliance always overrides the information published in any other media (owner's manual, catalogues, flyers, magazines and/or web sites).
    ** Some appliances have been tested with a low ceiling. Before setting up your unit, refer to the installation manual.



    • High-efficiency appliance 2020 EPA approved
    • Blower Kit with Variable Speed Control
    • Recommended heating area : 800 - 1,800 square feet
    • Flashing Backerplate measures 30" tall x 41" wide
    • Color: Black
    • Non-catalytic combustion technology
    • Optimum efficiency : 72%
    • Emissions (grams/hour) : 2.25 g/h
    • Hidden door hinges
    • Maximum burn time : 8 hours
    • Firebox lined with refractory bricks for better heat distribution
    • Stainless-steel secondary-air system improving gas combustion
    • Recommended chimney diameter : 6"
    • Approved Chimney Liner: Rock-Flex Stainless Flexible Liner Kit

    Help & Documents:

    Required Option Details


    The Napoleon Backerplate is used to seal the gap between the top and side of the insert to the fireplace. This unique 1-piece Backerplate will seal a fireplace opening that measures less than 30" in height and 41" in width. The one piece designs gives the unit a finished appearance without the commonly found multi-piece flashing. The Backerplate easily hooks to the insert for a simple installation. A Backerplate is required to complete the installation of the insert.

    Optional Accessories

    Optional Chimney Liner Kit

    Rock-Flex 316Ti stainless steel chimney liner kits are UL listed and the perfect choice to install for your new wood burning insert. Each kit includes the 316Ti Flexible Chimney Liner, Vertical Appliance Connector, 13 x 13 in. Premium Top Plate, and Round Rain Cap.

    Frequently Bought Together:

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    Our 316Ti flexible chimney liner and chimney liner components have passed the rigorous testing at the Underwriters Laboratories with best in class status and are UL Listed. So if you are looking for UL listed chimney liner sold directly to homeowners, then look no further than Rockford Chimney

    Customer Testimonials

    Back in July you gave me excellent advice re. sizing/purchasing a flue liner for the chimney associated with my wood stove. I'd like to thank you once agai... More

    —AE Northfield, MN

    A few weeks ago I ordered a chimney liner system for my fireplace insert. Your salesman recommended the liner system plus the insulating blanket. I just wa... More

    —AH Happy customer

    Just got around to installing my new smooth flexible liner and deluxe terra cotta cap (wow). The quality of your product is second to none. Very pleased an... More

    —B.B. from Massachusetts

    Thanks so much for the great tech service from Dennis, very knowledgable, friendly and proffessional.Your website is the best, beats your competition by fa... More

    —Bill in Knoxville

    Sue and Dennis, I received the final part of my order yesterday (the chimney cap that actually fits over the chimney chase). It looks wonderful! My fiancé... More

    —CC, VA

    Hello, I was shopping for an fireplace insert and called RCS to ask why they were so much cheaper than my local guy, the reply was " we sell thousand of th... More

    —Chris, PA.