For shoppers comparing ventless gas log inserts, the Duluth Forge dual-fuel fireplace insert is the only full insert in this selection; the other four options are ventless gas log sets designed for fireplaces. The 32,000-BTU insert is best for buyers who want a finished firebox-style unit and fuel flexibility. Among natural-gas log sets, the 24-inch Duluth Forge is best for higher listed heat output, while the 18-inch set suits buyers seeking a smaller log display.
| Product | Type and fuel | Listed heat coverage | Best for |
|---|---|---|---|
| Duluth Forge FDF400RT-ZC | Fireplace insert; natural gas or propane | Up to 1,500 sq. ft. | Fuel flexibility and insert-style design |
| Duluth Forge 24-inch Split Oak | Log set; natural gas | Up to 1,300 sq. ft. | Higher output log set |
| EROMMY 24-inch | Log set; natural gas | Up to 1,100 sq. ft. | Remote features and temperature settings |
| Duluth Forge 18-inch Split Red Oak | Log set; natural gas | Up to 1,100 sq. ft. | Smaller log set with thermostat remote |
| Duluth Forge 18-inch Stacked Oak | Log set; liquid propane | Up to 1,100 sq. ft. | Propane users seeking a traditional look |
Duluth Forge Dual-Fuel Fireplace Insert
This is the clearest choice for shoppers specifically looking for a ventless fireplace insert rather than a log set. Its 32,000-BTU rating and listed coverage of up to 1,500 square feet make it the highest-coverage option in this group. The dual-fuel design accepts either natural gas or liquid propane, according to the supplied product details.
The unit includes a remote with an LCD screen, manual flame adjustment, six hand-painted ceramic fiber logs, mesh double doors, and a sprayed brick liner. Choose it if you want an insert-style enclosure and fuel choice. Avoid it if you only need loose gas logs for an existing fireplace. Confirm fuel supply and installation requirements before purchase.
Duluth Forge 24-Inch Split Oak Log Set
This natural-gas log set is best for buyers who want the greatest listed heat output among the natural-gas log sets here. It produces 33,000 BTUs and is listed to heat spaces up to 1,300 square feet. The set includes nine ceramic fiber logs molded from real wood, with hand-painted bark, split, and charred details.
A glowing ember bed and single-row flame burner provide the listed fire presentation, and ember material is included. Choose this model if heat output and a larger split-oak arrangement are priorities. Its stated fuel is natural gas, so it is not the right pick for a propane-only supply. Check fireplace dimensions and product requirements before deciding.
EROMMY 24-Inch Natural Gas Log Set
EROMMY is best for natural-gas buyers who value detailed remote controls. The 32,000-BTU vent-free burner is listed for spaces up to 1,100 square feet. Its remote offers manual and thermostat modes, temperature settings, child lock, and Fahrenheit/Celsius conversion. Product details also state an automatic shutoff after two hours if no signal is detected for 15 minutes.
The set includes six hand-painted, high-temperature ceramic logs described as South America silk floss wood. Choose it if the remote functions are a key comparison point. The listed coverage is lower than the 24-inch Duluth Forge model’s, and the set is specified for natural gas only. Verify that its dimensions and fuel match your fireplace setup.
Duluth Forge 18-Inch Split Red Oak Set
This 18-inch natural-gas set is best for buyers comparing a smaller log arrangement with remote temperature control. It delivers up to 30,000 BTUs and is listed to warm spaces up to 1,100 square feet. Eight hand-painted ceramic fiber logs have split-wood and bark textures.
The thermostat remote provides temperature and on/off control, while its LCD displays room temperature, burner status, and operating mode. Choose it if you want those display details in a compact log-set format. It has less listed heat output than the 24-inch Duluth Forge set and is for natural gas, not liquid propane.
Duluth Forge 18-Inch Propane Log Set
This model is best for buyers with a liquid-propane supply who want an 18-inch stacked-oak look. It produces 30,000 BTUs and is listed for spaces up to 1,100 square feet. The seven hand-painted ceramic logs use real-wood molds and are described as having realistic charring and texture.
Choose it for propane compatibility and a traditional stacked-log appearance. The important limitation is fuel: this model uses liquid propane, unlike the natural-gas sets above. Do not select it for a natural-gas-only connection unless the manufacturer’s instructions explicitly support the intended setup.
Buying Guide: How To Choose A Ventless Gas Log Set Or Insert
Do you need an insert or a log set?
An insert is an enclosed fireplace-style unit; a log set is a burner and decorative logs intended for a compatible fireplace opening. In this selection, the Duluth Forge FDF400RT-ZC is the insert. The other products are log sets. Compare the product type with your existing fireplace and installation plan before comparing appearance or heat output.
Which fuel does your home use?
Match the appliance to the available fuel. Three listed log sets are natural-gas models, one is liquid propane, and the Duluth Forge insert is described as dual fuel. Never assume a natural-gas product can use propane, or vice versa. Follow the product documentation and consult a qualified professional if fuel or installation requirements are unclear.
How much heat output do you need?
Compare both BTU output and the stated coverage range, but treat coverage as a product claim rather than a guarantee for every home. Room layout, insulation, and local conditions can affect heating needs. The listed range here runs from up to 1,100 square feet for several sets to up to 1,500 square feet for the dual-fuel insert.
What should you verify before buying?
- Measure the fireplace opening and compare it with the unit’s documented dimensions.
- Confirm fuel type, gas connection, and installation requirements.
- Compare remote functions, including thermostat control and display features.
- Review manufacturer instructions and local rules for vent-free appliances. Ventless products do not require an external vent according to the supplied descriptions, but suitability depends on the home and applicable requirements.
Frequently Asked Questions
Are ventless gas logs the same as a fireplace insert?
No. Gas log sets consist of logs and a burner for a compatible fireplace. An insert is an enclosed fireplace-style unit. Check the product type before purchasing.
Which product in this selection uses natural gas?
The Duluth Forge 24-inch and 18-inch log sets and the EROMMY 24-inch log set are specified for natural gas. The Duluth Forge insert is described as dual fuel.
Which option has the highest listed heat coverage?
The Duluth Forge dual-fuel insert is listed to heat up to 1,500 square feet, the highest coverage figure in this selection.
Can I use a propane log set with natural gas?
Do not assume so. The 18-inch stacked-oak set is specified for liquid propane. Use only the fuel and setup allowed by the product instructions.
Do ventless gas log products need a chimney?
The supplied product descriptions state that these ventless models do not require external venting. Check the instructions and local requirements to determine whether a particular model is appropriate for your home.