Kozy Heat Nordik 34I Gas Insert
The Kozy Heat Nordik 34i is a direct-vent gas fireplace insert engineered for one specific job: turning an old, drafty wood-burning fireplace into a clean, efficient, modern gas fireplace — without removing the chimney, rebuilding the wall, or sacrificing the architectural character of your existing fireplace surround. With 40,000 BTU/hr output, a 30-11/16" × 22-1/4" viewing area (683 sq in — among the largest in its class), Kozy Heat's flagship EVO Elevated Burner technology for a stunningly realistic flame, and modern Scandinavian-inspired design language, the Nordik 34i is the premium choice when you're ready to stop using your fireplace as a chimney for warm air and start using it as a real heat source.
Will the Nordik 34i Fit Your Fireplace?
This is the most important question for any gas insert purchase, and the one you need to answer BEFORE ordering. The Nordik 34i requires an existing masonry or factory-built non-combustible fireplace opening that meets these minimum specifications:
| Existing Fireplace Requirement | Minimum |
|---|---|
| Front opening width | At least 33-7/8" (the insert's front width — most standard masonry openings are 36"+, so this is rarely an issue, but verify) |
| Front opening height | At least 23-3/4" plus required clearances (most masonry openings are 24"+, again rarely an issue) |
| Opening depth | At least 24" from the front of the opening to the back wall of the firebox |
| Back wall width | At least 23-3/4" (this is the tapered back dimension of the insert — most masonry fireplaces have a back wall narrower than the front) |
| Chimney condition | Solid-fuel masonry or factory-built non-combustible chimney in good structural condition; must be able to accept a 3" co-linear flexible vent through the existing flue |
| Hearth/floor protection | Non-combustible hearth in front of the fireplace per local code requirements |
| Gas line access | Existing gas line or ability to route a new gas line to the insert location |
Specifications
| Brand | Kozy Heat |
|---|---|
| Model | Nordik 34i |
| SKU | NDK-34-i |
| Product Type | Direct Vent Gas Fireplace Insert |
| BTU Input | 40,000 BTU/hr (Natural Gas or LP) |
| Burner Technology | EVO Elevated Burner |
| Vent Type | Direct Vent (Co-linear through existing chimney) |
| Vent Kit | Kozy Heat #816 (35 ft expandable 3" flexible pipe + #816-CAP termination) |
| Fuel Type | Natural Gas or Liquid Propane (specify at order) |
| Front Width | 33-7/8 in. |
| Back Width | 23-3/4 in. |
| Height | 23-3/4 in. |
| Back Height | 21-1/8 in. |
| Depth | 24 in. |
| Viewing Area | 30-11/16 in. (W) × 22-1/4 in. (H) — 683 sq. in. |
| Glass | Ceramic |
| Log Set | Traditional or Birch (sold separately, one required) |
| Front Compatibility | Roosevelt 34 fronts, shrouds, and interior panels |
| Bedroom Approved | Yes (direct vent design) |
| Adjacent Sidewall Clearance (Min) | 4 in. |
| Fireplace Enclosure Floor-to-Ceiling (Min) | 55 in. |
| Estimated Heating Area | Up to ~1,500 sq. ft. (varies by insulation, ceiling height, climate) |
| Warranty | Kozy Heat Limited Lifetime Warranty |
| Made In | USA (Hussong Manufacturing, Minnesota) |
Available Options & Accessories
The Nordik 34i's modular design lets you customize the finished installation to match your interior:
- Log Set Choice — Traditional or Birch (one required, sold separately; choose based on your interior style)
- Fuel Type — Natural Gas or Liquid Propane (specified at order; conversion kits available)
- Roosevelt 34 Fronts — the Nordik 34i is compatible with the entire Roosevelt 34 front ecosystem, including multiple decorative front styles (traditional, contemporary, Prairie design, etc.)
- Shrouds — decorative shrouds that integrate the insert with your existing fireplace surround, available in multiple styles
- Interior Panel Options — refractory liner options that change the appearance of the firebox interior behind the flame (black brick, Chicago brick, black glass panels, etc.)
- Fan Kit — optional add-on that circulates warm air more aggressively, increasing perceived warmth and extending heat further into the room
- Vent Kit Components — the standard #816 kit covers most installations, but extension kits and alternative termination options are available for taller chimneys or non-standard installations
- Remote Control Options — basic on/off remote, thermostat remote, or programmable remote depending on your preferences
For configuration assistance, contact us — we'll help you spec the right combination of front, shroud, log set, and accessories during the quote process.
Brand
Kozy Heat®
Transform your existing wood-burning fireplace into a clean, convenient, and efficient source of warmth with a Kozy Heat gas fireplace insert. Designed to fit inside many masonry or factory-built wood fireplaces, Kozy Heat gas inserts deliver realistic flame presentation, dependable heat, and the everyday convenience of natural gas or propane.
A gas insert uses a sealed firebox and venting system to draw combustion air from outdoors and exhaust fumes safely outside through the existing chimney chase.
Distinctive Features
Convert an Existing Fireplace Without Starting Over
Enjoy the charm of your existing fireplace with the push-button convenience of gas. Kozy Heat gas inserts are a great solution for replacing messy wood fires with steady, controllable comfort.
Direct Vent Performance
Get warmth where you want it most. Kozy Heat direct vent gas inserts are built to deliver dependable heat while using your existing chimney as the venting path.
Traditional or Contemporary Fireplace Looks
Whether your home leans rustic, transitional, or modern, Kozy Heat gas inserts give you design flexibility with realistic flame options, decorative fronts, and finish choices that complete the room.
Kozy Heat Gas Insert FAQs
What is a Kozy Heat gas fireplace insert?
A gas fireplace insert is a gas-burning appliance installed inside an existing wood-burning fireplace. It updates the old fireplace with a sealed gas firebox, burner system, and venting.
Can a Kozy Heat gas insert go into my existing fireplace?
In many cases, yes. Gas inserts are designed for existing masonry or approved factory-built wood fireplaces, but exact fit depends on the fireplace opening, chimney condition, venting requirements, and the specific Kozy Heat model.
Do Kozy Heat gas inserts use natural gas or propane?
Many Kozy Heat gas inserts are available for natural gas or propane. Fuel availability depends on the model and installation setup.
Do I still need my chimney?
Yes, but not in the same way as a wood fire. A direct vent gas insert commonly uses the existing chimney as a chase for the intake and exhaust venting system.
Are gas inserts good for zone heating?
Yes. A Kozy Heat gas insert can help heat the room or area where you spend the most time, reducing reliance on whole-home heating in some situations.
Do Kozy Heat gas inserts require professional installation?
Yes. Gas inserts should be measured, selected, vented, connected, and tested by a qualified fireplace professional. At all Leisure Time Inc. locations we offer the services necessary to get your fireplace insert properly installed.
Fireplace Blog Posts
Is my Fireplace Safe to Use? What Safety Checks Do I Need?
Before you light that first fire of the season, take a few minutes to make sure your fireplace is safe. This guide walks you through the DIY safety checks you can do yourself for gas, wood-burning, and electric fireplaces, explains what a professional inspection covers, and tells you exactly when to stop and call for help — including the 8 warning signs you should never ignore.
How Much Does It Cost to Install a Fireplace?
The fireplace unit gets most of the attention, but installation is where the real budget lives. In this guide, we break down every installation cost line by line — venting, framing, gas line, electrical, permits, labor, and finishing — for gas, wood-burning, and electric fireplaces. Plus, exactly what to bring to your first consultation so we can give you an accurate estimate on the spot.
How Much Does a Fireplace Cost?
Adding a fireplace to your home is one of the most impactful upgrades you can make—for comfort, ambiance, home value, and even energy savings. But before you walk into a showroom, most homeowners want to know one thing: how much is this actually going to cost?




