How many BTUs do I need if the fireplace is my backup heat source during power outages?
For a Hendersonville home, size a backup unit to one gathering room — about 20,000 to 40,000 BTU — and insist it lights without power. Our retirement-heavy market leans toward quiet, low-maintenance sealed gas off the Henderson County mains, with millivolt or battery-backup ignition so the heat holds when the grid drops.
Low-maintenance heat for a quieter house
Hendersonville's retirement households don't want to fuss with a fireplace — they want to flip a switch and get warm. A sealed direct-vent gas unit with battery-backup ignition fits that perfectly: it lights untended, holds heat in one room, and needs no chimney. Size a single Main Street or Laurel Park gathering room around 20,000 to 40,000 BTU; the Napoleon Ascent 36 at 26,500 BTU suits a typical open living room, while a larger great room leans toward the 40,000-BTU end. The right-sized unit throws steady heat that holds a room for days, which is exactly what you want when the power's out.
Clay soil, old chimneys, and the insert fix
The clay-heavy soil around here settles foundations and stresses older masonry chimneys, so an original open firebox is often the wrong thing to lean on for backup heat — it's drafty and may have flue problems. Dropping a sealed gas or wood insert into that opening, on a correctly sized liner, turns a leaky hole in the wall into a real heater that runs without power. We pull the Henderson County permit and meet the inspector on every gas line we connect — permitted hearth work protects your home sale and insurance.
What stays warm when the power quits
Millivolt and battery-backup gas keep heating with the grid down; wood is total independence; electric puts out nothing in an outage; pellet needs power and battery backup only covers a short one. Twenty-five minutes south of our Asheville showroom, we'll come size it in your home for free. Call (828) 545-0525.
Fireplace help in Hendersonville
We install and service fireplaces throughout Hendersonville and the rest of Henderson County — just 25 minutes south from our Asheville-area showroom.
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?

