Use code USA2026 for up to $1000 OFF select products
Use code USA2026 for up to $1000 OFF select products
About Us Contact Us Order Tracking
Skip to content

Gas Fireplace Inserts

Upgrade your existing fireplace with our Gas Fireplace Inserts collection. Designed to fit into traditional wood-burning fireplaces, these inserts provide efficient heat, realistic flames, and improved energy performance with the convenience of gas operation.

Perfect for homeowners looking to modernize their space without a full renovation, gas fireplace inserts deliver dependable warmth and timeless style at Electric Fireplaces USA.

Frequently Asked Questions

  • The cost of a gas fireplace insert fully installed typically ranges from $5,000 to $6,500, which covers the unit, surround, fan, remote control, gas line, electrical work, venting pipe, and required permits. The unit itself generally starts in the mid-$2,000s, with additional costs for labor, gas line installation, and venting. Shopping around for an experienced installer is strongly recommended, as the quality of the outcome depends heavily on installer skill.

  • Traditional open wood-burning fireplaces are notoriously inefficient, with an efficiency rating of only around 10–15% since most heat escapes up the chimney. In contrast, a gas fireplace insert can operate at 70–85% efficiency, meaning far more heat stays in the room. This improved efficiency can reduce your dependence on central heating and lower overall heating costs.

  • Direct-vent inserts use two sealed pipes running up the chimney — one to draw combustion air in from outside and one to exhaust gases out — keeping indoor air quality unaffected and making them the safer choice. Ventless (vent-free) inserts require no chimney and are more energy-efficient since no heat escapes outside, but they release byproducts like water vapor and carbon dioxide into the room. Ventless units are actually illegal in many states and jurisdictions due to air quality and safety concerns.

  • To properly size a gas fireplace insert, you need to measure five key dimensions of your existing masonry fireplace: the height and width of the opening, the height and width of the back wall, and the depth of the firebox. Because inserts come in fixed sizes, there will typically be a gap between the insert and the fireplace edge, which is covered by a metal shroud or decorative surround included with most units. When in doubt, consult an NFI-certified hearth specialist who can match the right insert to your specific fireplace dimensions.

  • Gas fireplace inserts can generally provide radiant heat without electricity, but the blower fan — which circulates warm air throughout the room — requires power to operate. Some models include battery backup systems that allow the unit to continue functioning, including the fan, during a power outage. If no electricity is available at all, you can also opt for a millivolt ignition model, which requires no electric power to start or run.