7 Best Gas Fireplace Insert For Small Fireplaces (October 2026)

This Innoflame electric fireplace insert is a fantastic choice for adding ambiance and supplemental heat to smaller rooms, covering up to 400 sq. ft. with its 1400W heater. You’ll appreciate the realistic log set and the adjustable flame brightness, which allows you to customize the visual effect. The included remote control makes operation effortless, and safety features like overheat protection and a cool-to-touch glass front provide peace of mind, especially with children or pets around.

While it excels at ambiance and supplemental warmth, it’s not designed to be a primary heat source for larger areas. If your main goal is creating a cozy atmosphere in a bedroom, den, or smaller living room, and you value safety and ease of use, this electric insert is an excellent fit.

This Duluth Forge fireplace insert offers a robust 32,000 BTU heat output, capable of warming up to 1500 sq. ft., making it suitable for medium-sized spaces. Its dual-fuel capability allows you to use either natural gas or liquid propane, offering great flexibility. The included remote control adds convenience, allowing you to adjust settings from your couch.

While it’s a powerful unit, ensure your fireplace opening can accommodate its substantial dimensions (36.38″W x 33.27″H x 18.38″D). For those seeking a versatile and convenient heating solution with remote operation, this model is a strong contender.

This Duluth Forge fireplace insert is an excellent choice if you prioritize maintaining a consistent room temperature, thanks to its integrated thermostat control. It delivers a strong 32,000 BTU heat output, suitable for up to 1500 sq. ft., and offers the convenience of dual-fuel operation (natural gas or propane). The unit’s dimensions are more compact than some other models, potentially fitting into slightly smaller spaces.

While the thermostat offers automated heating, some users might prefer more direct remote control over flame height. If automated temperature regulation is your priority and you have a moderately sized fireplace opening, this model offers reliable performance and efficiency.

This Duluth Forge unit is a complete ventless fireplace system, including a stylish mantel with an Apple Spice finish, making it a standout piece for your living room. It offers a powerful 32,000 BTU heat output, capable of warming up to 1500 sq. ft., and features convenient thermostat control for maintaining your desired temperature. The dual-fuel capability (natural gas or propane) adds to its versatility, and the realistic ceramic logs enhance the cozy ambiance.

Be aware that this is a full system with a mantel, so it requires more space than a simple insert (45″W x 45″D x 15″H). If you’re looking for an all-in-one solution that combines heating, ambiance, and furniture-style aesthetics, this model is an excellent choice. Skip it if you only need a compact insert for a small existing fireplace.

The ProCom Universal Ventless Firebox is a fantastic option if you’re looking to build a custom fireplace. Its zero-clearance design offers significant flexibility, allowing it to be recessed into a wall or paired with a cabinet mantel. The slim profile is advantageous for tighter spaces, and the extra-large viewing area enhances the visual appeal. This firebox is compatible with most 18″ or 24″ ventless gas log sets, giving you control over the final look.

Keep in mind that this is a firebox only; gas logs are sold separately, so factor that into your budget and planning. If you’re aiming for a personalized fireplace installation and already have or plan to purchase a gas log set, this ProCom unit provides a solid, adaptable foundation.

This Bluegrass Living 24-inch gas log set is designed to bring warmth and ambiance to an existing fireplace. It boasts a substantial 33,000 BTU output, capable of heating up to 1100 sq. ft., and offers the flexibility of dual-fuel operation (natural gas or propane). The set includes realistic hand-painted logs, a remote control, and essential safety features like an oxygen depletion sensor for peace of mind.

While it provides good heat, the 1100 sq. ft. coverage might be less than some larger inserts. Ensure your existing firebox meets the minimum dimensions (15″ D x 28″ W front). If you’re looking to upgrade a traditional wood-burning fireplace with the convenience of gas logs and dual-fuel options, this set is a solid, efficient choice.

The Peterson Fyreside 24-inch log set is designed for those with existing vented wood-burning fireplaces seeking a powerful propane heat source. It delivers an impressive 50,000 BTU output, providing substantial warmth and a realistic flame appearance with its ceramic logs. The auto-safety pilot valve offers convenient control and peace of mind, and the set includes everything needed for installation, including a gas connection kit.

Its primary limitation is that it’s propane-only and requires a vented fireplace, making it less versatile than dual-fuel or ventless options. If you have a vented fireplace and specifically need a high-output propane solution, this Peterson set is a robust choice. However, if you require natural gas compatibility or a ventless setup, you’ll need to look elsewhere.