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Osburn: 3500

The Osburn 3500 wood insert combines power, efficiency and safety. With its amazing features and sober lines that give way to one of the largest glass surfaces in its category, this insert will blend perfectly with the architecture of your home. Its flawless design reveals all the Canadian know-how in terms of alternative heating and will quickly become the house favorite. No harsh winter can resist it!

Because each house is unique, choose the door overlay, the faceplate and the trims that suit you!

• Fuel type : Dry cordwood (16″ recommended)
• Recommended heating area-ft² : () 1,000 – 2,700
• Overall firebox volume-ft³ : 3.5
• EPA loading volume-ft³ : 2.84
• Maximum burn time : () 10 h
• Maximum heat output-dry cordwood : (2) 110,000 BTU/h (32.2 kW)
• Overall heat output rate < : (2) (3) 18,100 BTU/h (5.3 kW) to 49,500 BTU/h (14.5 kW) • Average overall efficiency (dry cordwood) : (3) 71 % (HHV) (4) 76 % (LHV) (5) • Optimum overall efficiency : (6) (7) 77 % • Optimum heat transfer efficiency : (8) 76 % • Average particulate emissions rate : (9) 1.32 g/h • Average CO : (10) 92 g/h

Decorative Front *

Stove Body *

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Important: Product Availability by Location

Not all fireplace and stove brands are available at both our Butte and Helena locations. Each showroom carries different manufacturer lines and inventory based on local partnerships and customer demand.


To ensure we have the exact fireplace or stove you’re looking for in stock, please call ahead or mention your preferred location when requesting an estimate. Our team will let you know immediately if your selected product is available at your nearest showroom.

Locations

We’re here to help! If your preferred product isn’t available at your closest location, we’ll work with you to find the best solution—whether that’s special ordering, transferring inventory, or recommending a comparable model that meets your heating needs.