Napoleon S25i Wood Burning Insert

Napoleon S25i Wood Burning Insert

Napoleon S25i Wood Burning Insert

Napoleon S25i Wood Burning Insert

Napoleon S25i Wood Burning Insert

Napoleon S25i Wood Burning Insert

Napoleon S25i Wood Burning Insert

Approx. Heating Area: 800 - 2,100 sq. ft.Max Output: 70,000 BTU/h

Approx. Heating Area: 800 - 2,100 sq. ft.

Max Output: 70,000 BTU/h



Product Details:

The Napoleon S25i wood burning insert is a medium-sized wood burning insert that is sure to fit in most fireplaces. With a maximum heat output of up to 70,000 BTU's, the Napoleon S25i will provide plenty of heat in the cold winter months. The 2.51 cubic foot firebox can hold a log up to 23" for left to right loading. With an overall efficiency rating of 71.56%, the Napoleon S25i can offer up to an impressive 16 hour burn time on a low fire. The Napoleon S25i is clean burning with a 1.3 grams per hour emissions rating and EPA 2020 approved.

The modern design of the Napoleon S25i wood burning insert will accommodate any type of decor. The hidden door hinges allow for a large 18.5" x 11" glass size providing an impressive viewing area. Choose either the 30" x 41" standard backerplate or the 33" x 48" large backerplate to complete the installation. The Napoleon S25i includes a dual blower system to circulate more heat throughout the space.

    Specifications & Manual

    Napoleon S25i Insert Manual

    Napoleon S25i Wood Insert Specifications
    Emissions 1.30 grams / hour
    Efficiency Overall Overall: 71.56% LHV: 76.99% HHV: 71.56%
    Chamber (D.W.H) 18” x 23 1/2” x 11” (457mm x 597mm x 279mm)
    Viewing Area 200.6 in² (1294.1cm²)
    Approx. area heated** Up to 2,100 ft² (195.1 m²)
    Maximum heat output*** 70,000 BTU /Hrr
    Heat output* 19,195 - 54,057 BTU/Hr
    Duration low fire** 16.26 hours
    Weight w/o bricks 345.78 lbs (156.84kg)
    Weight of bricks 48 lbs (21.7kg)
    Ideal wood length Front-back loading 17” (432mm) Left-right loading 23” (584mm)
    Minimum Stack Height **** 15 feet (4.5m)
    Efficiency Standard B415.1-10
    Minimum Depth 14 ⅜” (365mm)
    Maximum Depth 19 1/8” (365mm)
    * As tested using test method ALT-125.
    ** Figures will vary considerably with individual conditions.
    *** Wolf Steel Ltd. estimated realistic BTU/hr with hardwood logs and regular refueling.
    **** Required in order to achieve proper draft.

    Minimum Clearance 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 20.5"
    Clearance - minimum floor protection in front of the fireplace 19"
    * 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.



    • Up to 70,000 BTU
    • 2.5 cu. ft. firebox capacity
    • Burn time: 16 hours
    • Weighted average emissions rate: 1.3 g/hr
    • Weighted average overall efficiency: 76%
    • Tested and certified to EPA 2020 cordwood requirements
    • Heavy-duty 5/16" firebox top
    • Ceramic fiber baffle system
    • Hidden hinges and extra large glass viewing area
    • Contemporary medium-sized wood insert complete with cast door
    • Dual blower system included

    Help & Documents:

    Required Accessory:


    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. Or, choose the large size Backerplate which will seal a fireplace less than 33" tall and 48" wide. The one piece design 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.