Cheap flueless gas fires can provide room-by-room heat without a chimney, but the right choice depends on your fuel supply, room size, and preferred installation style. The Duluth Forge 25,000-BTU natural-gas stove is best for natural-gas users who want thermostat control; the 33,000-BTU propane log set suits an existing fireplace setup; and the dual-fuel stove and inserts offer fuel flexibility. Compare the listed heat output and product format below, then check local rules and installation requirements before buying any ventless gas appliance.
| Product | Fuel | Listed Heat Output | Best For |
|---|---|---|---|
| Duluth Forge QSN250T Stove | Natural gas | 25,000 BTU | Thermostat-controlled stove heating |
| Duluth Forge DLS-L24R-2 Log Set | Liquid propane | 33,000 BTU | Propane log-set heating |
| Duluth Forge Propane Insert | Liquid propane | 26,000 BTU | Built-in or recessed appearance |
| Duluth Forge FDSR25 Stove | Natural gas or liquid propane | 26,000 BTU | Fuel flexibility and remote control |
| Duluth Forge FDI32R Insert | Natural gas or liquid propane | 32,000 BTU | Higher-output dual-fuel insert |
Duluth Forge 25,000-BTU Natural Gas Stove
This ventless stove runs on natural gas and delivers 25,000 BTUs. Its listed coverage is up to 1,100 square feet. That makes it a reasonable option for buyers who want a freestanding stove format and already have access to natural gas.
The thermostat control cycles the stove on and off to maintain the selected room temperature. The dual burner produces two rows of flames around five hand-painted ceramic fiber logs, with a large viewing area. These features combine room heating with a visible flame display.
- Best for: Natural-gas households seeking thermostat-controlled supplemental heat.
- Why it was selected: It has a clear fuel requirement, a stated heating output, and automatic temperature control.
- Limitation: It operates on natural gas only, so it is not the right fit for buyers who need a propane model.
Choose this stove if temperature cycling is more important than remote operation or dual-fuel flexibility. Confirm the room’s suitability and the appliance’s installation requirements before purchase.
Duluth Forge 33,000-BTU Propane Log Set
This 24-inch ventless gas log set uses liquid propane and produces up to 33,000 BTUs. The manufacturer lists heating coverage of up to 1,300 square feet. It is the highest-output propane-only option among the five products in this comparison.
The set includes eight hand-painted ceramic fiber logs designed to resemble stacked oak, with bark and char details. Its ember burner system uses a single flame row and a glowing ember bed. The supplied ember material is intended to add to the fire appearance.
- Best for: Buyers who want a propane log set and have an appropriate fireplace installation.
- Why it was selected: It combines a stated 33,000-BTU output with a detailed log-and-ember presentation.
- Limitation: It is propane-only and is a log set rather than a freestanding stove or finished insert.
Choose this model if the log-set format fits your project and propane is your available fuel. Do not assume it fits an existing fireplace; verify the required opening and installation specifications.
Duluth Forge Propane Ventless Fireplace Insert
This liquid-propane insert produces up to 26,000 BTUs and is listed to heat spaces up to 1,350 square feet. The product description says it can be recessed into a wall or paired with a face mantel, giving buyers two approaches to its built-in appearance.
Five hand-painted ceramic fiber logs and a dual precision-ported burner create the flame display. The listed design does not require a chimney, and the product description presents it as a zone-heating option without ductwork. That can suit a project where a built-in look matters more than the portability of a freestanding stove.
- Best for: Propane users planning a recessed or mantel-style fireplace presentation.
- Why it was selected: It provides a defined installation style, stated heat output, and a realistic log display.
- Limitation: It uses liquid propane only, so natural-gas households need a different model.
Choose this insert if you want a fixed focal point and your space can accommodate the installation requirements. Check the product dimensions and applicable local requirements rather than relying on the listed coverage area alone.
Duluth Forge 26,000-BTU Dual-Fuel Stove
This ventless stove offers a choice of natural gas or liquid propane and has a listed output of 26,000 BTUs. Its blue-flame heater is described as suitable for areas up to 1,200 square feet. The dual-fuel design makes it a useful comparison for buyers who do not want to narrow their search to one fuel type at the outset.
A thermostat remote is included for setting the desired temperature and controlling the unit. The stove has six hand-painted ceramic fiber logs. The product information specifies that its system requires four AA and two AAA batteries and says they are included.
- Best for: Buyers who want a stove format, remote temperature control, and a choice between two listed fuel types.
- Why it was selected: It balances fuel flexibility with a stated heat output and included remote.
- Limitation: The listed battery requirements mean buyers should account for batteries when planning remote use.
Choose this model if fuel flexibility is a priority and the stove format suits your room. Confirm the appliance’s required setup for the selected fuel before installation.
Duluth Forge 32,000-BTU Dual-Fuel Insert
This ventless insert runs on either natural gas or liquid propane and provides 32,000 BTUs. The product description lists coverage up to 1,500 square feet and states that no outside duct or chimney is needed. These figures make it the highest-output option in this group, although actual suitability depends on the room and installation conditions.
The remote has an LCD screen for switching the burner on and off. The product also includes manual flame adjustment, a standing pilot, nine hand-painted ceramic fiber logs, and a mesh screen. Its insert format is intended for buyers seeking a fireplace-style installation rather than a freestanding stove.
- Best for: Buyers seeking an insert with dual-fuel operation and the highest listed output in this comparison.
- Why it was selected: It combines a 32,000-BTU rating, two fuel options, remote control, and manual flame adjustment.
- Limitation: Its insert format may not suit buyers looking for a freestanding appliance.
Choose this insert if its output and fuel flexibility match your needs. Verify the required opening, clearances, and local installation rules before ordering.
Buying Guide: How To Choose A Cheap Flueless Gas Fire
Which fuel should you choose?
Start with the fuel available at the installation site. The QSN250T is natural-gas-only, while the 24-inch log set and the propane insert are liquid-propane-only. The FDSR25 stove and FDI32R insert are listed as dual-fuel models that can use natural gas or liquid propane. Fuel flexibility does not mean the appliance can be switched without following its setup instructions; confirm the correct configuration before use.
How much heat output do you need?
Compare the stated BTU rating with the room and the role the appliance will play. The products range from 25,000 BTUs for the natural-gas stove to 33,000 BTUs for the propane log set. The listed coverage figures range from 1,100 to 1,500 square feet. Treat those numbers as product specifications, not a guarantee that the appliance will heat every room of that size equally.
Room layout, insulation, ceiling height, and the relationship between the fire and adjoining areas can affect how useful zone heating feels. If the main goal is to heat one frequently used room, focus on that room’s conditions rather than selecting a model solely by its largest coverage figure.
Do you want a stove, insert, or log set?
- Stove: The QSN250T and FDSR25 are the options to compare if you want a freestanding stove form.
- Insert: The propane insert offers recessed or mantel pairing options; the FDI32R is a dual-fuel insert with remote operation.
- Log set: The DLS-L24R-2 provides a stacked-oak log presentation and is designed as a propane log set.
These formats are not interchangeable. Check product dimensions, opening requirements, and installation details for your intended location. Do not assume that a log set or insert will fit an existing fireplace without measuring and checking the manufacturer’s specifications.
Is remote or thermostat control more useful?
The QSN250T uses thermostat control to cycle on and off around the selected room temperature. The FDSR25 includes a thermostat remote, while the FDI32R includes an LCD remote and manual flame adjustment. The propane log set description lists remote control in its product name, but its supplied feature details emphasize the burner and log presentation. Compare the specific control functions that matter to you rather than treating all remotes as equivalent.
What does “flueless” mean for home planning?
Flueless or ventless gas appliances are described as operating without an outside duct or chimney, but they are still fuel-burning appliances intended for indoor use. Requirements and permitted uses can differ by location. Check local codes, manufacturer instructions, and any applicable building or fire-safety rules before purchasing or installing one. Follow the specified clearances and operating directions, and ask a qualified professional when installation requirements are unclear.
How should you compare total value?
A low purchase price does not tell the full cost of ownership. Compare the required fuel, installation work, any needed fireplace or mantel preparation, and controls or batteries. Avoid choosing only by the highest BTU rating or the most realistic-looking logs. A model is a better value when its fuel type, format, output, and controls match the space and intended use without requiring unsuitable modifications.
Frequently Asked Questions
Are flueless gas fires suitable for every home?
No. Suitability depends on local rules, the appliance instructions, the available fuel, and the installation location. Check applicable requirements before buying or using a ventless gas appliance.
Which product has the highest listed heat output?
The Duluth Forge 24-inch propane log set is listed at up to 33,000 BTUs. The dual-fuel FDI32R insert is listed at 32,000 BTUs.
Which options use natural gas?
The QSN250T uses natural gas only. The FDSR25 stove and FDI32R insert are listed for either natural gas or liquid propane.
Which model is best for a built-in appearance?
The liquid-propane ventless insert is described as suitable for recessing into a wall or pairing with a face mantel. The FDI32R is also an insert, so compare its dimensions and installation details for your project.
Can I assume the listed square-foot coverage will match my home?
No. Coverage figures are product specifications, and actual heating performance can vary with room layout and other conditions. Use the listed area as a comparison point, not a guarantee.
What should I check before ordering?
Confirm fuel type, product dimensions, room suitability, installation requirements, local rules, and the included control features. For a fireplace or insert project, verify the opening and clearances before selecting a model.