What's the most reliable ignition system for a gas fireplace?
A millivolt standing-pilot system is the most reliable ignition, period — no electronics, no house power, it lights in a blackout. Electronic ignition like Heat & Glo's IntelliFire saves fuel because the pilot isn't burning around the clock, and with battery backup — as on Napoleon's Ascent 36 — it keeps working when the grid doesn't. After Helene, that distinction stopped being theoretical.
Millivolt: the system that can't be knocked out
A millivolt system runs on a standing pilot whose heat generates its own tiny electrical current — no circuit board, no wall outlet, no house power anywhere in the chain. That's why it's the reliability king: fewer parts, nothing for a storm to take out, lights the same in a blackout as on a Tuesday afternoon. Valor's H5 is the flagship of this philosophy — no blower, no electronics, radiant heat that keeps a room warm through a full grid-down week. The tradeoff is the pilot itself, which burns a small amount of fuel whenever it's standing; many owners simply shut it off for the summer.
Electronic ignition: efficient, and battery-backed
Intermittent pilot ignition — Heat & Glo's IntelliFire is the version we install most — lights the pilot only when you call for flame, so nothing burns around the clock. The old reliability knock was that electronic systems need power; battery backup largely closed that gap. Napoleon's Ascent 36, our best-selling everyday gas fireplace, pairs electronic-ignition convenience with battery backup, which means outage heat when the grid fails. After Helene left much of WNC dark for days, "lights without power" went from spec-sheet trivia to the first question customers ask us. If you want remote and app control, this is also the family of systems that offers it.
Reliability is mostly a maintenance story
The most common no-light call we run every fall isn't a failed ignition system at all — it's spiders and dust clogging the pilot assembly and burner orifices over the off-season. A thermocouple or thermopile drifting out of spec is an inexpensive part and a single visit. Annual service, late summer or early fall (from $189), keeps either ignition style dependable before you're depending on it. One firm line: pilot and valve work is gas work, which is licensed work in North Carolina — never a DIY job. If yours won't light, call (828) 545-0525.
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