10 Best Ventless Gas Fireplace 2025 in the United States

The Duluth Forge Ventless Stainless Outdoor Gas Fireplace Insert offers a powerful 24,000 BTU output, making it a strong option for heating outdoor spaces. Its manual control valve and easy start battery-assisted Piezo ignition provide reliable operation, though manual controls may not be as convenient as automatic ones for some users.

Safety is addressed with the inclusion of a drain tray to manage moisture, which is essential for outdoor use. The use of high-quality 304 grade stainless steel ensures durability and longevity, and the product is assembled in the USA, which might appeal to those looking for American-made goods. The reflective crystal glass media adds a stylish touch to the fireplace, creating an attractive flame display that enhances outdoor aesthetics.

Installation is designed to be straightforward, with the fireplace having a relatively slim profile that won't take up too much space. It operates on natural gas but can be converted to liquid propane with the included kit, offering flexibility depending on available fuel. Efficiency is inherently strong given the ventless design, ensuring heat is maximized without loss through a vent.

The Empire Boulevard 48-In Vent-Free Linear Gas Fireplace is a stylish choice for heating and decoration, especially in modern homes. It offers a solid 32,000 BTU heat output, making it capable of warming medium to large living spaces efficiently without the need for a vent. Its electronic ignition system ensures easy and reliable start-up, and the included remote control allows you to adjust the temperature and lighting conveniently from across the room. The programmable LED in-floor lighting adds a nice customizable ambiance that fits well with contemporary décor.

Installation is designed for wall mounting, which works perfectly in open areas or as a see-through room divider. It runs on natural gas or propane, providing flexibility depending on your fuel source. Its relatively large size means placement options might be limited in smaller rooms.

This fireplace suits those wanting a modern, ventless heating solution that combines aesthetics with effective warmth, but users should confirm safety features and installation requirements for their specific space.

The Duluth Forge Dual Fuel Ventless Gas Fireplace delivers a solid 32,000 BTU output, making it capable of heating spaces up to about 1,500 square feet, which suits medium-sized living rooms effectively. One of its main advantages is the dual fuel option, allowing you to use either natural gas or liquid propane depending on what’s available at your home. The remote control adds convenience by letting you adjust heat settings easily without needing to get up.

Safety is well-addressed here with a battery-assisted piezo ignition and an oxygen depletion sensor that automatically shuts the unit off if oxygen levels drop or carbon monoxide is detected, which is reassuring in a ventless setup. The fireplace is highly efficient, rated at 99.9%, meaning almost all the fuel is converted to heat without loss through ventilation since it doesn’t require a chimney.

In terms of design, it features a polished apple spice finish with hand-painted logs, giving it a warm, realistic look that fits nicely in a home setting, especially if you want a traditional mantel style. Installation is straightforward as a floor-mounted insert, and since it’s ventless, you don’t need complex ductwork or venting, which can save on installation costs and allow flexible placement. This fireplace suits those seeking a versatile, efficient heating option with a classic look and convenient features for spaces up to 1,500 sq. ft., though proper room ventilation and its weight should be considered during installation.