How much will a gas fireplace add to my monthly gas bill?
Marshall's lower elevation — around 1,650 feet — means milder winters and fewer runtime hours than the high towns, so the fuel adder tends to run smaller here. The catch is the houses: steep hillside lots and narrow downtown buildings built against the mountainside complicate venting and draft, and a poorly drafting unit wastes whatever fuel it burns.
Fewer cold hours, smaller adder
At 1,648 feet Marshall sits below most of the towns we serve, and the heating season is correspondingly shorter — fewer evenings the fireplace runs, fewer therms or gallons burned. That's the good news on the monthly line. The calculation itself doesn't change — hours times BTU input times rate — but the hours here are lower than up in Haywood or on the high plateaus, so a Marshall home tends to see one of the gentler adders in our service area.
Draft is the efficiency wildcard
The French Broad gorge brings cool, damp evenings, and Marshall's steep multi-story downtown buildings make venting a design problem rather than an afterthought. A sealed direct-vent unit vents straight out a sidewall regardless of a difficult roofline, so it runs at rated efficiency where a struggling masonry flue would downdraft and waste fuel. On these tight mountainside lots, getting the venting right is what keeps the number where it should be.
Which fuel, which bill
Marshall is mixed — natural gas metered in the town core, propane by the gallon out on the hillsides — and the two behave nothing alike on your budget. Madison County permits apply, and we're 25 minutes north of the showroom. Call (828) 545-0525 for a free assessment on those challenging lots.
Fireplace help in Marshall
We install and service fireplaces throughout Marshall and the rest of Madison County — just 25 minutes north from our Asheville-area showroom.
Related questions
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- What's the total annual cost of owning a gas fireplace — fuel, pilot, and service?

