The Best Gas Fireplace Inserts 2025

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So, you’re shopping for a gas insert. The best news is there is a unit that aligns with your practical requirements and design vision. Unfortunately, with numerous gas inserts available, finding the right fit can be tricky.

But don’t stress; we’ll simplify the process. We’ve selected and reviewed 7 best gas fireplace inserts in this guide to help you make an informed decision.

The Best Gas Fireplace Inserts

Best Overall

1. Duluth Forge Dual Fuel Ventless Gas Fireplace Insert- FDF300R

What We Like

• Remote control and adjustable thermostat
• It has dual burners
• Runs on liquid propane or natural gas
• Automatic shut-off

What We Don’t Like

• The blower can be noisy
• Not ideal for large rooms

The Duluth Forge Dual Fuel Ventless Gas Fireplace Insert is a fantastic choice with a five-setting adjustable thermostat. It produces 26,000 BTUs, enough for 1,350 square feet of space. This fireplace insert is 99.9% efficient and doesn’t need electricity to function.

This insert comes with a remote control that lets you turn it on and off and control the temperature from afar. It also has an Oxygen Depletion Sensor (ODS) that monitors the oxygen levels and shuts off the unit if it drops too low. Get It On Amazon

We love that it has dual-fuel capability. You can run it with liquid propane or natural gas, depending on availability and affordability.

This fireplace insert is designed to look realistic. It features five hand-painted ceramic fiber logs made from real wood, realistic yellow dancing flames, and a faux liner pattern.

You can install this fireplace insert recessed directly into a wall for a clean, cohesive fit. Alternatively, get a face mantel. Duluth Forge Dual Fuel Ventless Gas Fireplace System is a variation of this fireplace insert that has a mantel.

Heat Output: 26,000 Btu | Vent Type: Ventless | Ignition Type: Battery assisted Piezo ignition | Dimensions: 13.9″D x 23.9″W x 29.1″H

Read more:

• Gas Fireplace Ideas For Living Room
• Indoor Gas Fireplace Pros And Cons
• Is It Cheaper To Run Gas Fireplace Or Electric Fireplace?

Best Gas Fireplace Insert with A Mantel

2. Duluth Forge FDF400T-ZC Dual Fuel Ventless Fireplace

What We Like

• Automatic shut off
• Remote and thermostat control
• Available in multiple finishes
• Uses liquid propane or natural gas

What We Don’t Like

• The blower is sold separately

This ventless fireplace insert comes with an attractive, furniture-grade mantel with distressing and burnishing on its edges. The mantel is available in several finishes to suit different tastes. They are chocolate, antique white, autumn spice, apple, walnut, apple spice, nutmeg, slate grey, and toasted almond. Get It On Amazon.

That’s not all; it has a sprayed brick liner, double doors, and six hand-painted, highly realistic ceramic fiber logs. Moreover, it produces real dancing flames for an authentic experience. With a zero clearance design, this insert offers a tight installation— it doesn’t take up much space.

This insert resembles FDF300R, except it has a higher heat output (32,000 BTU) to keep up to 1500 sq ft warm. However, like FDF300R, it is dual fuel (supporting propane or natural gas) and has an oxygen depletion sensor, a thermostat, and a remote control.

We appreciate that this insert automatically shuts down if the oxygen level depletes or carbon monoxide is detected. Unfortunately, you’ll need to buy a blower separately.

Choose FDF400RT-ZC if you want this fireplace insert but without a mantel.

Heat Output: 32,000 BTU | Vent Type: Ventless | Ignition Type: Battery assisted Piezo ignition | Dimensions: 15″ H x 45″ W x 45″ D

Best For The Bedroom

3. ProCom Dual Fuel Ventless Gas Fireplace Insert

What We Like

• Stylish design
• Dual fuel system
• Automatic shut-off

What We Don’t Like

• Low heat output

This insert will be a great addition to your home, and the best part is that it’s approved for use in the bedroom. This means you can stay warm and enjoy the ambiance from the realistic flames from your bed.

We love the ProCom Dual Fuel Ventless Gas Fireplace System’s sophisticated design, featuring a round trim molding, an avery mantel, and a stunning walnut, apple spice, chocolate, or toasted almond finish.

It is also fitted with an iron grate and a beautiful mesh screen. In addition, it contains four hand-painted ceramic logs that deliver captivating flames.

Its easy-to-use thermostat lets you set the temperature to keep the room comfortable. This insert has a built-in oxygen depletion sensor with automatic shut-off.

We wish this insert produced more heat because, with only 10,000 BTUs, it only warms up to 500 sq ft. The upside is you don’t need to sacrifice a lot of space to install it— the mantel allows a tighter clearance.

Heat Output: 10,000 BTU | Vent Type: Ventless | Ignition Type: Battery assisted Piezo ignition | Dimensions: 12.5″ H x 36.5″ W x 28″ D

Best Budget

4. ProCom Dual Fuel Ventless Gas Fireplace Insert- PCS150T-A-TA

What We Like

• Zero clearance design
• Thermostat control
• Dual fuel system
• Automatic shut-off

What We Don’t Like

• Limited to use in small spaces

Heat the air quickly in your bedroom or living area and circulate warmth with ProCom PCS150T-A-TA Gas Fireplace Insert. This ventless insert has a dual fuel system that allows you to use propane or natural gas to run it.

This beautiful fireplace insert will make a gorgeous focal point in the room, looking stunning in any space, including the corners. It features an elegant arch shape, a mesh screen, and hand-painted logs that produce flickering, captivating flames. Get It On Amazon.

It also has a wooden mantel in a toasted almond finish; it comes in walnut and antique white options as well. Regarding heat output, this insert has a 15,000 BTU suitable for heating up to 600 sq ft.

You can install this insert recessed into a wall or against it. The built-in thermostat makes operating this fireplace insert easier. On the other hand, the oxygen depletion system makes it safer by turning off the insert upon detecting oxygen depletion or carbon monoxide buildup.

Heat Output: 15,000 Btu | Vent Type: Ventless | Ignition Type: Push button Piezo ignition | Dimensions: 12.5″D x 28″W x 36.5″H

Best For Large Spaces

5. Duluth Forge Dual Fuel Ventless Gas Fireplace Insert- FDI32R

What We Like

• Dual fuel system
• Remote control
• Automatic shut-off
• Zero clearance

What We Don’t Like

• Produces too much heat for small rooms

Like other products in this list, the Duluth Forge FDI32R fireplace insert allows you to run it with propane or natural gas. It emits 32,000 BTUs, heating large spaces comfortably (up to 1500 sq ft.).

A remote control to help you turn the burner on and off from a distance is included in this package. Moreover, the remote lets you turn the flame on and off. This insert also contains nice hand-painted logs to make it look realistic.

While the remote makes this insert convenient, it doesn’t facilitate controlling the flame level. Instead, you have to do it manually.

You can frame this 32-inch zero-clearance designed fireplace insert seamlessly without air gaps. Recess the Duluth Forge FDI32R fireplace insert directly into a wall or pair it with a mantel.

Heat Output: 32,000 Btu | Vent Type: Ventless | Ignition Type: Push button Piezo ignition | Dimensions: 18.38″D x 33.27″W x 36.38″H

Best Linear Gas Fireplace Insert

6. Duluth Forge Ventless Linear Wall Gas Fireplace Insert- DF300L

You’ll love this fireplace if you appreciate a linear design. You can mount it on a wall anywhere in the room, warming up to 1400 sq ft with the 26,000 BTUs it produces.

Duluth Forge DF300L Gas Fireplace Insert has glowing fiber ceramic logs that produce realistic flames. In addition, it has an iron grate and a mesh screen. This insert is also equipped with a thermostat control that cycles it off and on to keep the ideal temperature.

This insert is designed to operate safely— the oxygen depletion system shuts the insert down if oxygen depletes or carbon monoxide accumulates excessively.

Heat Output: 26,000 Btu | Vent Type: Ventless | Ignition Type: Battery-assisted Piezo ignition | Dimensions: 7.84″ H x 18.05″ W x 27.95″ D

7. Comfort Glow Dual Fuel Ventless Gas Fireplace Insert

What We Like

• One-button control
• Dual fuel option
• Adjustable thermostat
• It has an elegant mantel

What We Don’t Like

• Blower not included

This fireplace insert operates on natural gas or propane, has a 99.9% efficiency, and doesn’t require electricity. Its 26,000 BTUs ensure up to 950 sq ft of space stays warm, comfortable, and inviting.

The Comfort Glow Dual Fuel Ventless Gas Insert is easy to start thanks to the electric ignitor that is controlled with one button. You can easily customize the heat level through the automatic thermostat.

This insert is also attractive— it has a stylish mantel with a pewter oak finish. The mantel adds to this insert’s visual appeal and provides a surface to place essential or decorative items.

It comes with everything you require for installation, but you’ll have to buy a blower separately.

Heat Output: 26,000 Btu | Vent Type: Ventless | Ignition Type: Electric ignition | Dimensions: 16″D x 42″W x 42.5″H

Final Remarks

The gas fireplace inserts above cater to different budgets, needs, and aesthetics, ensuring there’s something for everyone. All the inserts in this list are dual fuel, have auto shut-off features, and oxygen depletion systems, ensuring safety. Pick an insert that fits the fireplace perfectly if you intend to put the unit inside.