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
Always follow the manufacturer’s installation requirements and applicable local building, gas, and safety codes.
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
Why Choose the Duluth Forge Fireplace Insert?
The Duluth Forge Ventless Zero Clearance Fireplace Insert combines 26,000 BTU heating performance, dual-fuel flexibility, 99.9% efficiency, realistic ceramic fiber logs, remote operation, and built-in safety protection in a compact modern design. With no outside duct or chimney required, it offers a flexible way to create a custom fireplace while providing supplemental heat for spaces up to approximately 1,350 sq. ft.
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