10 Best Gas Fireplace Inserts 2026 in the United States

The Duluth Forge Dual Fuel Ventless Gas Fireplace is a versatile insert designed to heat spaces up to 1,500 square feet with a strong 32,000 BTU output. Its standout feature is the ability to use either natural gas or liquid propane, giving flexibility depending on your home's fuel setup. Being ventless means it doesn’t require a chimney or ductwork, making installation easier and less costly, but it needs proper room clearance and good ventilation for safety. The fireplace comes with a stylish antique white mantle and six hand-painted ceramic logs that look realistic, adding a cozy, classic feel to your living space. The remote control with an LCD screen lets you easily switch between manual and thermostat modes to maintain your preferred temperature without hassle.

With an efficiency rating of 99.9%, the unit converts most of the fuel into heat, helping save on energy costs. Safety features include an oxygen depletion sensor that shuts off the unit if air quality drops, along with a reliable battery-assisted Piezo ignition system. The unit is fairly large (45" wide and deep, 15" high), requiring a good amount of space and clearance, which may limit its fit in smaller rooms. Additionally, as a ventless model, monitoring indoor air quality and following installation guidelines carefully is important to avoid ventilation issues. This product is well suited for homeowners seeking an easy-to-install, efficient heating solution that offers fuel flexibility combined with attractive design, while those with smaller rooms or a preference for vented systems might consider other options.

The Empire Comfort Systems Tahoe Clean Face Direct Vent IPC Deluxe 42" LP Fireplace is a robust option for those seeking an efficient and customizable gas fireplace insert. With a substantial BTU rating of 25,000, this propane-fueled fireplace is designed to effectively heat spaces up to 1,250 square feet, making it suitable for medium-sized living rooms. The direct vent system enhances safety by channeling emissions outdoors, providing peace of mind during operation.

One of the standout features is its flexibility in ignition options, with both a millivolt valve and an intermittent pilot ignition system. This allows users to choose between manual reliability and energy efficiency. Additionally, the fireplace's aesthetic appeal can be tailored to match personal décor preferences through various liner and finish options, making it a versatile choice for different interior styles.

The product's dimensions (17.75"D x 43.5"W x 37.62"H) ensure it fits well in a variety of settings, while the painted metal construction promises durability. Its cordless operation adds to the convenience, particularly in modern homes. However, the weight of 145 pounds might pose a challenge during installation, and professional assistance could be necessary.

This fireplace is a solid choice for those seeking a combination of strong heating performance, customization, and ease of use, provided that installation considerations are taken into account.

The Duluth Forge Dual Fuel Ventless Gas Fireplace Insert offers a strong 32,000 BTU heating capacity, making it suitable for warming spaces up to 1,500 square feet. Its ventless design means you don’t need a chimney or outside duct, which simplifies installation and saves space. One standout feature is its flexibility to use either natural gas or liquid propane, providing convenience depending on your fuel availability. The included remote control with an LCD screen and manual flame adjustment adds easy, modern operation. Aesthetically, it has a realistic look with six hand-painted ceramic logs, a mesh double door, and a sprayed brick liner that can nicely complement many living rooms. The compact size allows for wall mounting or recess installation, fitting well in various spaces.

The unit also scores high on efficiency at 99.9%, meaning most of the fuel converts to heat, which helps keep energy costs lower. However, being ventless means it relies on indoor air circulation and may not be ideal for tightly sealed rooms without proper ventilation. It requires 7 AAA batteries for the remote, which might need occasional replacement. Also, although it’s advertised as safe with push-button ignition and zero-clearance installation, ventless units can produce some indoor moisture and combustion byproducts, so proper use and room monitoring is important. This insert suits homeowners looking for a powerful, easy-to-install heating solution with dual fuel options and modern controls, especially where adding a chimney is not practical.