Why does my gas fireplace burn differently after being converted between natural gas and propane?
Waynesville is mixed-fuel country — gas mains reach parts of town while Hazelwood's older streets and the coves above run on propane — so a fireplace moved even a few miles here can land on the wrong fuel. If yours soots or roars, a natural-gas unit is likely over-fueled on propane; if it burns weak, it's the reverse. Either way the orifice doesn't match the fuel.
Two fuels inside one town
At nearly 2,650 feet with a heating season that runs about three weeks longer than Asheville's, a Waynesville fireplace earns its keep — so it has to be set for the fuel it actually gets. Propane holds more than twice the energy per cubic foot and flows at higher pressure, so it meters through a smaller orifice. Push propane through a burner jetted for natural gas and it over-fires: tall, sooty flames and blackened logs. Go the other way and the flame starves. Moving a unit from a Frog Level main up to a propane hollow means the whole conversion has to happen, not just the fitting.
Altitude makes a bad conversion worse
Thinner mountain air changes how a burner draws combustion air, so a unit that's already over- or under-fueled soots harder at Waynesville's elevation than the same appliance would down in the valley. Correct orifice size and regulator pressure matter more up here, not less — a marginal setup that limped along at 2,100 feet can turn genuinely dirty at 2,650.
Licensed gas work, permitted with Haywood
Re-jetting between fuels is a manufacturer-specified procedure that ends with a manometer confirming pressure, and the gas side is licensed in North Carolina. We pull the permit with Haywood County, pressure-test the line, and set the burner to run clean on the fuel you actually have. Call (828) 545-0525.
Fireplace help in Waynesville
We install and service fireplaces throughout Waynesville and the rest of Haywood County — just 35 minutes west from our Asheville-area showroom.
Related questions
- Does high elevation affect how my gas fireplace burns?
- Why is black soot forming on my gas fireplace logs?
- Why are my gas fireplace flames suddenly too tall?
- Why won't my propane fireplace light after the tank ran empty and was refilled?
- Why does my propane fire pit flame shrink or die even with a full tank?