How many BTUs do I need if the fireplace is my backup heat source during power outages?
In Asheville, plan on roughly 20,000 to 40,000 BTU to keep one gathering room warm through an outage — but the number only matters if the unit lights without power. From our Emma Road showroom we steer you toward millivolt or battery-backup gas, or wood, so a Buncombe County outage doesn't leave your family cold.
Two Ashevilles, two backup paths
The original masonry fireboxes in Montford and North Asheville were built for ambiance, not outage heat — an open hearth can actually run a net heat loss. For those homes we drop a sealed gas or wood insert onto a correctly sized liner, so you get real, grid-down warmth from the chimney you already have. Newer South Asheville rooms take a clean-face direct-vent unit like the 26,500-BTU Napoleon Ascent 36, which covers a single open living area and vents straight out a sidewall — no chimney required. Elevation keeps our nights in the 20s into early spring, so a large or vaulted room should push toward the top of that range.
Why ignition outranks the BTU number
A high BTU rating means nothing in an outage if the fireplace needs a wall outlet. Napoleon's battery-backup ignition and the Valor H5's millivolt system — no circuit board, no blower — both keep throwing heat with the power out. Asheville sits right on the natural-gas mains, so most in-town homes tie straight into gas; running or extending that line is licensed work, and we permit and pressure-test every foot of it. Electric fireplaces go dark the instant the grid does, and we'll tell you that before you choose one.
Your shortest drive, permit included
We're headquartered at 629 Emma Rd, so an Asheville install is the closest job we run — easy for the assessment and any follow-up service. We pull the Buncombe County permit and meet the inspector, which keeps your home sale and homeowner's insurance clean if you ever sell. Book a free in-home assessment and we'll match the right power-optional unit to your gathering room. Call (828) 545-0525.
Fireplace help in Asheville
We install and service fireplaces throughout Asheville and the rest of Buncombe County — we're headquartered right here.
Related questions
- Does a gas fireplace need electricity, and will it still work in a power outage?
- What size gas fireplace do I need to keep a second home or cabin above freezing in winter?
- Can one gas fireplace or wood stove heat an entire house?
- Do I need an electrical outlet inside or near the fireplace for the blower and ignition?
- What is zone heating and how does it change what size fireplace I need?