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Duluth Forge Dual Fuel Ventless Gas Fireplaces Inserts
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Duluth Forge 26,000 BTU Ventless Zero Clearance Fireplace Insert
Dual-Fuel Operation, Ventless Installation & Supplemental Heating up to 1,350 Sq. Ft. Create a custom fireplace centerpiece with the Duluth Forge Ventless Zero Clearance Fireplace Insert. Designed for flexible indoor installation, this modern fireplace insert can be paired with a face mantel or recessed directly into a wall to create a clean, built-in appearance. Powered by either Natural Gas (NG) or Liquid Propane (LP), this vent-free fireplace produces up to 26,000 BTU/hour and is designed to heat spaces up to approximately 1,350 sq. ft. Its ventless design eliminates the need for an outside duct or chimney, while the dual precision-ported burner provides efficient heat output. The fireplace combines realistic hand-painted ceramic fiber logs, convenient remote control operation, battery-assisted piezo ignition, and integrated safety technology including an Oxygen Depletion Sensor (ODS) with automatic shut-off.Key Features
Powerful 26,000 BTU Heat Output
Produces up to 26,000 BTU/hour to provide substantial supplemental heat for spaces up to approximately 1,350 sq. ft.Dual-Fuel Operation
One fireplace can operate using either Natural Gas or Liquid Propane, providing flexibility for different fuel configurations.Ventless Fireplace Design
The vent-free design requires no outside duct or chimney, making it suitable for custom fireplace installations where conventional venting is not practical.Zero Clearance Installation
Designed as a zero-clearance fireplace insert, it can be incorporated into a custom fireplace design, paired with a face mantel, or recessed directly into a wall.Realistic Ceramic Fiber Logs
Includes five hand-painted ceramic fiber logs designed to provide a realistic traditional fireplace appearance.Dual Precision-Ported Burner
The dual precision-ported ventless gas burner is engineered to provide an attractive flame presentation while delivering efficient heat.99.9% Efficiency
The ventless design is rated at 99.9% efficiency, helping maximize the heat generated from the fuel.Oxygen Depletion Sensor with Automatic Shut-Off
An integrated Oxygen Depletion Sensor (ODS) monitors oxygen levels and includes an automatic shut-off function for added safety.Remote Control Included
Convenient remote control operation allows you to control the fireplace from a comfortable distance.Battery-Assisted Piezo Ignition
Battery-assisted piezo ignition provides convenient startup without requiring a traditional electrical connection for ignition.Modern Black Finish
The black finish and clean design complement modern interiors and custom fireplace surrounds.Heating & Performance Specifications
| Specification | Details |
|---|---|
| Maximum Heat Output | 26,000 BTU/hour |
| Total BTU | 26,000 BTU |
| Heating Area | Up to 1,350 sq. ft. |
| Efficiency | 99.9% |
| Fuel Type | Dual Fuel — Natural Gas & Liquid Propane |
| Vent Type | Ventless |
| Burner Type | Dual Precision-Ported Ventless Gas Burner |
| Ignition | Battery-Assisted Piezo |
| Oxygen Depletion Sensor | Yes |
| Automatic Shut-Off | Yes |
Dimensions
| Specification | Details |
|---|---|
| Front Product Width | 29.1 in |
| Front Product Height | 23.9 in |
| Product Depth | 13.9 in |
| Rear Product Width | 29.1 in |
| Rear Product Height | 24 in |
| Product Weight | 48 lb |
Product Details
| Specification | Details |
|---|---|
| Brand | Duluth Forge |
| Product Type | Ventless Zero Clearance Fireplace Insert |
| Style | Modern |
| Color Family | Black |
| Material | Iron |
| Indoor/Outdoor | Indoor |
| Fuel Configuration | Dual Fuel |
| Venting | Ventless |
| Pack Size | 1 Unit |
| Included Log Set | Yes |
| Included Remote Control | Yes |
Installation & Design
The Duluth Forge fireplace insert provides multiple design possibilities for creating a custom fireplace installation:- Pair with a compatible face mantel
- Recess directly into a wall
- Build into a custom fireplace surround
- Use as an indoor supplemental heating source
- Create a modern fireplace focal point without an outside chimney or duct
Safety Features
The fireplace includes integrated safety technologies designed to support safe operation:- Oxygen Depletion Sensor (ODS)
- Automatic shut-off
- Battery-assisted piezo ignition
- Ventless burner system
Certifications & Warranty
| Specification | Details |
|---|---|
| Certification | PFS Certified |
| Manufacturer Warranty | 1-Year Limited Warranty |
| Return Policy | 90-Day Returnable |
Recommended Applications
The Duluth Forge Ventless Zero Clearance Fireplace Insert is well suited for:- Custom residential fireplaces
- Living rooms and family rooms
- Bedroom fireplace installations
- Wall-recessed fireplace designs
- Mantel installations
- Supplemental heating
- Homes without a traditional chimney
- Natural gas or propane heating applications
- Modern interior fireplace renovations