AUTHORIZED DEALER The Kozy Heat Osseo Insert Electric Fireplace is designed for one specific job: dropping into an existing fireplace cavity (wood-burning fireplace that's no longer used, older gas unit being replaced, or new construction cavity sized for the Insert) and delivering modern flame ambiance plus modest supplemental heat without the complexity of gas line work or venting. Available in two sizes — Osseo e29 and e34 — the Insert Series turns an unused or outdated fireplace into a clean, customizable, plug-and-play feature in a single afternoon.

Why electric? Three big advantages over gas: No gas line required (plug into a standard 120V outlet, or hardwire), no venting required (no chimney work, no exterior wall vent), and dramatically simpler installation (typically a DIY afternoon project rather than a multi-day certified-installer job). The trade-off: electric fireplaces produce ambiance + supplemental heat, not primary heating. If you need real heat as a primary heating source, see our gas fireplace collection. If you want a fireplace that looks beautiful, runs anywhere there's an outlet, and adds 5,000 BTU of supplemental warmth — the Osseo Insert Series is purpose-built for exactly that.

Universal Osseo Insert Features

Both Insert Series models share the same core technology and customization. Size and viewing area change between e29 and e34; everything else stays the same:

Brand	Kozy Heat
Series	Osseo Insert Electric Fireplace
Models Available	Osseo e29 / Osseo e34
Power	750W / 1500W at 120V (selectable heat output)
Heat Output	Up to 5,000 BTU/hr
Installation	Plug-in (standard 120V outlet) or hardwired (still 120V)
Venting Required	None — completely vent-free
Lighting	Energy-saving LED with multi-color changing capability
Sound Effects	Crackling log effect (adjustable)
Controls	Standard remote control included
Thermostat	Thermostat control with set-temperature operation
Timer	30-minute incremental timer settings
Decorative Screen Fronts	Compatible with Kozy Heat Chaska screen front options
Made In	USA (Hussong Manufacturing, Minnesota)

Two Sizes to Match Your Existing Cavity

The Osseo Insert Series is engineered to retrofit into existing fireplace openings. Choose the size that matches your existing cavity dimensions:

Model	Overall Width	Viewing Area	Best For
Osseo e29	~29" wide	19-1/16" H × 28-9/16" W	Smaller existing fireplace cavities, bedrooms, dens, secondary living spaces, smaller masonry openings
Osseo e34	32-9/16" W × 23-1/2" H × 11-1/2" D	19-1/4" H × 31-1/2" W	Standard 36" masonry fireplace cavities, living rooms, family rooms, most common retrofit choice

Customization: The Real Reason to Choose Osseo

The Osseo Insert Series offers one of the most extensive customization systems in residential electric fireplace inserts. The same Osseo e34 can look dramatically different from one installation to the next depending on which combinations you choose:

Log Set Options
- Traditional Log Set — classic split-log appearance, pairs with rustic, transitional, and warm-modern interiors
- Birch Log Set — lighter coloring with white-bark detailing, suits contemporary, Scandinavian, and minimalist styles
Alternative Decorative Media — instead of logs, you can use:
- Driftwood — coastal/cottage aesthetic
- Small or Large Crystals — contemporary glass-bed look
- Lava Rock — modern volcanic-stone aesthetic
- River Rock — natural smooth-stone look
Flame Color Options
- Traditional Orange — classic warm fire appearance
- Blue Flame — striking contemporary cool-tone look
- Orange + Blue Combination — blended dynamic effect
13 Glowing Ember Bed Colors — LED-illuminated ember bed colors that can be set independently from the flame, allowing extensive mood customization
7 Downlight Accent Colors — LED accent lighting that washes the firebox interior with selectable colors
Chaska Decorative Screen Fronts — adds a decorative metalwork screen in front of the viewing glass for an additional layer of visual customization

Brand

Kozy Heat®

0-10,000 BTU/hr Hearth Units

Kozy Heat Osseo Electric Insert / Fireplace