Best Gas Log Insert Options for an Existing Fireplace
Updating an existing fireplace with a gas log insert can improve efficiency, ease of use, and heat output. This guide highlights five top choices that fit a variety of venting styles, fuels, and installation needs. Each product is described with key features to help you compare performance, reliability, and compatibility with your home setup.
| Product | Key Features | Fuel Type | BTU / Heating Area |
|---|---|---|---|
| RealFyre 24-Inch Live Oak Vented Gas Log Set | Match-lit, burner, logs, gas line kit | Natural Gas | 90,000 BTU |
| Duluth Forge Dual Fuel Ventless Fireplace Insert | Remote, dual fuel, 9 logs, 32000 BTU | Natural Gas / Propane | Up to 1500 sq ft |
| Comfort Glow Vent Free Log Insert With Remote | 8 logs, dual fuel, thermostat | Natural Gas / Propane | Heats up to 1,400 sq ft |
| Comfort Glow Vent Free Log Insert | 6 logs, dual fuel, adjustable thermostat | Natural Gas / Propane | Heats up to 1,250 sq ft |
| Duluth Forge FNVL18-1-RO Logs Set | Vented, remote, 18-inch, 45,000 BTU | Natural Gas | Up to 1,650 sq ft |
RealFyre 24-Inch Live Oak Vented Gas Log Set
RealFyre’s 24-inch Live Oak vented gas log set delivers a dramatic flame and solid radiant heat in a properly vented wood-burning fireplace. The unit is match-lit and comes with six hand-painted logs reinforced with steel, a vented burner, grate, embers, and a gas line connection kit. This set is designed for natural gas use only and requires adherence to local codes and your fireplace manufacturer’s directions for safe installation. It provides up to 90,000 BTU, making it suitable for larger spaces seeking bold flame visuals.
Duluth Forge Dual Fuel Ventless Gas Fireplace Insert
This ventless insert supports both natural gas and propane, offering flexible fuel options. With 32,000 BTU, it can heat up to about 1500 square feet and includes a remote control with an LCD screen. The unit uses a standing pilot and allows manual flame adjustment. Realistic 9 logs provide a visually appealing flame bed, and the design emphasizes efficient heating without external ducting.
Comfort Glow Vent Free Gas Fireplace Log Insert With Remote
Comfort Glow offers a dual-fuel 24-inch log set featuring eight logs with a glowing ember bed. The remote control lets you adjust heat and flame from a distance, extending comfort and convenience. The redesigned receiver improves battery life, and the unit is compatible with natural gas and propane installations, making it a versatile option for vent-free setups.
Comfort Glow Vent Free Gas Fireplace Log Insert
This 24-inch dual-fuel log set includes six deep-textured oak logs to resemble a natural fire. It is vent-free and equipped with an adjustable thermostat, making it simple to regulate heat. It supports both NG and LP, which broadens compatibility for various homes and gas lines, while maintaining a visually authentic flame effect.
Duluth Forge FNVL18-1-RO Logs Set
This 18-inch vented log set from Duluth Forge combines a realistic Heartland Oak appearance with a remote control for convenient operation. It includes an 18-inch burner and is designed for use in a masonry fireplace or a vented firebox. The logs are crafted from durable refractory ceramics and are built to heat up to approximately 1650 square feet when vented properly. A standing pilot and manual flame adjustment provide additional control.
RealFyre 18 Inch Vented Gas Logs Kit
RealFyre’s 18-inch vented logs kit features hand-painted Live Oak logs with a match-light ignition system. The logs are reinforced with steel for durability and designed to deliver high heat performance. This kit emphasizes authenticity in appearance and a sturdy construction to maintain long-term visual appeal in a traditional wood-burning fireplace.
Duluth Forge Dual Fuel Ventless Gas Fireplace Insert
Another Duluth Forge option supports dual-fuel operation in a ventless configuration, offering a 32,000 BTU heater that heats up to 1500 square feet. A thermostat automatically cycles on and off to maintain the desired room temperature, while the included 6 logs provide a natural visual effect. The unit features mesh double doors and a sprayed brick liner to enhance the overall fireplace look.
Buying Guide: Key Purchase Considerations
- Vent Type and Compatibility: Vent-free (ventless) inserts heat efficiently without a chimney, but require proper room ventilation and compliance with local codes. Vented options require a masonry or vented firebox and must be installed following manufacturer instructions.
- Fuel Type: Dual-fuel units offer flexibility between natural gas and propane. Ensure your home’s gas supply and line size support the BTU rating of the unit.
- BTU Output and Heating Area: Higher BTU helps heat larger spaces. Match BTU to room size and insulation to optimize comfort and energy use.
- Remote Control and Thermostat: Remote controls add convenience, while thermostats help maintain a steady room temperature. Check battery life and remote compatibility with your setup.
- Installation and Standards: Some units require a professional installation, especially vented vs. ventless systems. Verify local building codes and ensure the unit is certified for your fireplace type.
- Realism and Aesthetics: Logs with hand-painted detailing and ember beds create a convincing fire view. Consider log set textures and the ember bed’s brightness for a natural look.
- Durability and Materials: Look for logs reinforced with steel or ceramic refractory logs designed to resist heat cycles and maintain appearance over time.