Electric insert vs gas insert — which is better for an existing fireplace?
If you want that fireplace to genuinely heat the room, gas — a sealed gas insert commonly runs 70 percent efficient or better, and a millivolt unit keeps working with the power out. If you want the look with minimal construction and cost, electric — today's flame effects are convincing, but you get about 5,000 BTU of supplemental warmth, and only while the grid is up.
The heat gap, in plain numbers
The gas inserts we carry — the Napoleon Oakville X4 at 20,000 BTU and the Kozy Heat Chaska 25L at 25,000 BTU with the blower standard — are sealed heaters designed to carry a living space through a mountain winter evening. An electric insert delivers roughly 5,000 BTU, about 1,500 watts, rated for up to around 400 square feet of supplemental warmth. That's real coziness in a bedroom or den; it is not a heating plan for a great room in January. Neither unit is lying to you — they're just built for different jobs.
Two very different installation days
The gas insert is the bigger project: liners down the chimney, a fuel line to the firebox, a county permit, and an inspector — licensed gas work, which in North Carolina is precisely our trade. The electric insert slides into the opening, the flue gets blocked off to stop drafts, and it plugs in or gets hardwired. Simpler day, smaller invoice — an electric unit can be a few hundred dollars, while the gas path is a genuine investment that pays back in heat.
Where each one wins
Electric wins when there's no gas main and no interest in propane, when the room is small, when the budget is tight, or when you want flame without heat on a July evening — the Dimplex units we carry have a flame-only mode for exactly that, and Dimplex makes the most convincing electric flame on the market.
Gas wins everywhere heat matters — and it wins the outage question outright. After Helene, millivolt gas inserts kept homes warm through a week without power; electric fireplaces were dark the whole time. For a primary living space in WNC, that's usually the deciding vote. Free in-home assessment: (828) 545-0525.
Related questions
- Wood-to-gas vs wood-to-electric conversion — which is better for my fireplace?
- Electric fireplace insert vs electric log set — which should I put in my old fireplace?
- Does an electric fireplace put out as much heat as a gas fireplace?
- Which is cheaper to run, a gas fireplace or an electric fireplace?
- Which fireplace still works during a power outage — gas, wood, or electric?
- Should I get a gas fireplace or a wood-burning fireplace?
Still deciding? Talk to a real installer.
Free assessments across Western North Carolina — no pressure, straight answers.