Propane fireplace inserts that run ventless offer flexible heating for living spaces. This guide highlights five Duluth Forge dual-fuel inserts and mantle systems, each designed to burn natural gas or propane, deliver up to 32,000 BTU, and heat up to about 1,500 square feet. Features include remote or thermostat control, realistic logs, and durable finishes. The table below provides quick specs for the selected models.
| Product | BTU | Heats Up To | Notes |
|---|---|---|---|
| Duluth Forge 32K BTU Dual Fuel Insert (Remote) — Black | 32000 | 1500 sq ft | Remote, 9 logs |
| Duluth Forge 26K BTU Dual Fuel Insert With Thermostat — Black | 26000 | 1350 sq ft | Thermostat control, 5 logs |
| Duluth Forge 32K BTU Dual Fuel Insert With Remote — Black | 32000 | 1500 sq ft | Remote, 6 logs |
| Duluth Forge 32K BTU Dual Fuel Mantle System — Antique White | 32000 | 1500 sq ft | Mantle finish, remote, 6 logs |
| Duluth Forge 32K BTU Mantle System With Remote — Antique White | 32000 | 1500 sq ft | Mantle finish, remote, 9 logs |
Duluth Forge 32K BTU Dual Fuel Insert With Remote
Ventless dual fuel technology enables operation with natural gas or propane, delivering up to 32,000 BTU to heat spaces up to 1,500 square feet without external venting. The unit includes a remote with LCD display and a standing pilot, plus manual flame adjustment for precise control. Realistic, hand-painted logs and a mesh screen provide stylish, maintenance-friendly design.
- Ventless Dual Fuel Technology: Natural Gas or Liquid Propane.
- 32000 BTU; heats up to 1500 sq ft.
- Remote control with LCD; standing pilot; manual flame adjustment.
- 9 hand-painted logs; mesh screen.
Duluth Forge 26K BTU Dual Fuel Insert With Thermostat
This model uses an easy-to-use thermostat to automatically cycle the insert on and off to maintain a desired room temperature. It provides dual-fuel capability (natural gas or propane) and up to 99.9% efficiency. The insert features 5 hand-painted logs and a mesh screen to complete the look while delivering reliable warmth for spaces around 1,350 square feet.
- Ventless Dual Fuel Technology: NG or LP.
- 26000 BTU; heats up to 1350 sq ft.
- Thermostat control automatically maintains temperature.
- 5 logs; mesh screen.
Duluth Forge 32K BTU Dual Fuel Insert With Remote
Remote control with LCD lets users turn the burner on and off from a distance, while a standing pilot supports reliable ignition and flame height adjustments. The insert provides 32,000 BTU heating up to 1,500 square feet and includes 6 hand-painted logs, plus a mesh double door design with sprayed brick liner for an authentic look.
- Ventless Dual Fuel Technology: NG or LP.
- 32000 BTU; heats up to 1500 sq ft.
- Remote control with LCD; standing pilot; manual flame adjustment.
- 6 logs; mesh double doors; sprayed brick liner.
Duluth Forge 32K BTU Dual Fuel Mantle System
The mantle-style surround provides an attractive exterior with 32000 BTU ventless heat for spaces up to 1,500 square feet. It includes a remote with LCD, switching between manual and thermostat control. The unit ships with 6 logs and a furniture-grade mantle that features light distressing and burnishing, delivering a refined room focal point.
- Ventless Dual Fuel Technology; 32000 BTU.
- Remote with LCD; manual and thermostat modes.
- 6 logs; furniture-grade mantle with distressed edges.
Duluth Forge 32K BTU Mantle System With Remote
This mantle system features 32,000 BTU ventless heat, a remote control, and a 9-log configuration for a highly realistic flame display. The antique white finish complements traditional interiors, and the system heats spaces up to about 1,500 square feet. A remote and a standing pilot provide convenient operation, while the 9 logs enhance authentic fire ambiance.
- Ventless Dual Fuel Technology; 32000 BTU.
- Remote with LCD; manual and thermostat modes.
- 9 logs; antique white mantle with distressed detailing.
Buying Guide
When selecting a propane fireplace insert, consider room size, fuel availability, and installation requirements. Dual-fuel options add flexibility if you have access to natural gas or propane, but verify local codes and any needed certifications. Heating performance depends on BTU, insulation, and layout; ventless units can heat open spaces efficiently but may perform differently in very large or poorly insulated rooms. Control choices—from remotes to thermostats—impact convenience and energy use. Finally, mantle design and log realism influence the overall room aesthetic and how closely the unit blends with décor.
Key purchase considerations
- Fuel flexibility: Dual-fuel capability enables use with natural gas or propane; confirm compatibility and conversion options where required.
- Heating capacity: Match BTU to room size; higher BTU generally covers larger areas, but efficiency and insulation affect actual performance.
- Ventless compliance: Ensure the installation complies with local codes and is performed by a qualified professional if needed.
- Control options: Remote controls offer convenience; thermostat-based models automate heat maintenance for comfort and efficiency.
- Design and finish: Mantles and log count influence aesthetics; choose a finish (Black or Antique White) that complements your space.
- Safety features: Look for automatic shut-off options and flame-height controls for safe operation.
- Maintenance: Consider ease of glass cleaning, log replacement, and remote battery life; verify warranty terms.
- Warranty and support: Check manufacturer coverage and service options for long-term reliability.
Quick comparisons
| Model | BTU | Heats To | Logs / Finish | Controls |
|---|---|---|---|---|
| 32K Inset With Remote — Black | 32000 | 1500 sq ft | 9 logs; Black | Remote |
| 26K Inset With Thermostat — Black | 26000 | 1350 sq ft | 5 logs; Black | Thermostat |
| 32K Inset With Remote — Black | 32000 | 1500 sq ft | 6 logs; Black | Remote |
| Mantle System — Antique White | 32000 | 1500 sq ft | 6 logs; Antique White mantle | Remote |
| Mantle System With Remote — Antique White | 32000 | 1500 sq ft | 9 logs; Antique White mantle | Remote |