Millivolt (standing pilot) vs electronic ignition gas fireplace — which is better?
Neither wins outright — millivolt (standing pilot) ignition wins on power-outage reliability, and electronic ignition wins on everyday efficiency. A millivolt fireplace lights with zero household electricity, which is why we've leaned that way with a lot of WNC customers since Helene. Electronic ignition skips the always-burning pilot, saving gas the eight months a year your fireplace sits idle. Your priorities decide it.
How each ignition actually works
A millivolt system keeps a small pilot flame burning around the clock. That flame heats a thermopile — a stack of sensors that generates its own tiny voltage — and that self-made electricity is what opens the gas valve when you flip the switch. The house's wiring never enters the picture. No circuit board, no wall outlet, nothing to fail.
Electronic ignition (often called intermittent pilot, or IPI — Heat & Glo, Heatilator, and Majestic call theirs IntelliFire) works like a modern furnace: when you call for flame, a spark lights the pilot, the pilot lights the burner, and everything shuts fully off afterward. No standing pilot means no gas quietly burning through July.
The Helene factor
Hurricane Helene knocked power out across Western North Carolina for days, and the homes that stayed warm were the ones with a working wood or gas hearth. A millivolt fireplace like the Valor H5 — no blower, no circuit board — keeps throwing radiant warmth through a full grid-down week. A standard electronic-ignition unit goes dark with the rest of the house unless it has battery backup, which brands like Napoleon build in specifically for outage heat.
That's the honest tradeoff: millivolt burns a little pilot gas year-round; electronic ignition saves that gas but leans on the grid or a battery tray.
What we tell people at the counter
If you're on the natural-gas mains in Asheville or Hendersonville with reliable power and the fireplace is mostly ambiance, electronic ignition is the efficient, modern choice. If you're out in Fairview, Candler, Brevard, or a cabin up a mountain road — or the fireplace is your backup heat plan — millivolt or battery-backup ignition is worth every bit of that pilot gas.
One maintenance note either way: standing pilots and burner orifices collect spiders and dust over the off-season, the classic WNC no-light call every fall. Annual service (from $189) keeps both systems honest. Call (828) 545-0525 and we'll help you pick the right one for your address.
Related questions
- Does a standing pilot fireplace work better in a power outage than electronic ignition?
- Remote control vs wall switch vs thermostat for a gas fireplace — what's the difference?
- Which fireplace still works during a power outage — gas, wood, or electric?
- What does a WiFi or smart-home fireplace control add over a standard handheld remote?
- Radiant heat vs blower heat in a gas fireplace — what's the difference?
- Should I get a gas fireplace or a wood-burning fireplace?
Still deciding? Talk to a real installer.
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