Warm up Franklin County with the flip of a switch.

Most gas fireplace installations in Franklin County run somewhere between $3,500 and $9,000, depending on the unit, the venting path, and whether new gas line work is required. A direct-vent insert going into an existing masonry fireplace in a home that already has a gas line—common in older Washington or Union neighborhoods—lands on the lower end. A new built-in gas fireplace for a remodel or new construction, with framing, venting, and a fresh gas or propane line run, sits higher. Homes on propane that need a new tank installed will see additional cost on top of the fireplace itself. A local retailer will give you a firm number after walking your home.

Yes—it's a common project in Franklin County's older housing stock, especially the brick homes in Washington's historic district and farmhouses scattered around Union and New Haven. A gas insert typically drops into the existing masonry opening with a stainless liner run up the current chimney, so you keep the look of the original fireplace while gaining real, controllable heat output. Cost depends on whether the home already has a gas line nearby or needs propane service extended, but it's usually less than a full new-construction install since the chimney and opening are already there.

Either works, and which one you use mostly comes down to where you live. Spire Missouri serves natural gas to Washington, Union, Pacific, and St. Clair and the areas immediately around them. Outside those towns—much of unincorporated Franklin County, including the farm country toward New Haven and Gerald—propane from a local supplier is the standard option. Most gas fireplace models can be set up for either fuel with the correct orifice and regulator, so your choice of unit isn't really limited by which fuel serves your address.

Most modern gas fireplaces will, which matters in a county that sees its share of Missouri River valley ice storms. Units with IPI (intermittent pilot ignition) run a battery backup—typically AA batteries inside the unit—that takes over automatically when Ameren power drops, so the fireplace lights on demand just like normal. Valor fireplaces skip the batteries entirely: their pilot generates its own electricity through a thermocouple, so the unit works whether or not you remembered to check the batteries. For a Franklin County home that's lost heat during an ice event before, that self-powered detail is worth asking about specifically.

A gas fireplace is a fully built-in unit framed into a wall—the right call for new construction or a major remodel. A gas insert slides into an existing masonry fireplace opening and uses the current chimney as its vent path, which fits a lot of the older homes around Washington and Union. A gas stove is a freestanding unit that sits on the floor like a wood stove but burns gas or propane—a good option when you want heat in a room without an existing fireplace or the budget for full framing. Most Franklin County homeowners upgrading an old wood-burning fireplace end up choosing an insert.

Generally yes—a building permit and a gas line permit are required for a new gas fireplace installation, whether you're inside Washington, Union, or Pacific city limits (where the city handles permitting) or in unincorporated parts of the county (where it runs through the Franklin County Building Department). The gas line portion has to be done by a licensed gas-fitter regardless of who pulls the permit. Most established hearth retailers coordinate the permit, the gas line, and the final inspection as one package, so you're not left managing three separate trades yourself.

Vented units—direct-vent or B-vent—pull combustion air from outside and exhaust the byproducts back outside through sealed venting. They're the cleanest option and code-compliant everywhere, including Franklin County, which has no air quality non-attainment issues to worry about either way. Vent-free (ventless) units burn directly into the room without external venting; they're legal in Missouri but come with strict room-sizing rules and require an oxygen depletion sensor. For most Franklin County homes, a direct-vent unit is the more common and more broadly recommended choice—it delivers real heat output without any tradeoff on indoor air quality. A local retailer can walk you through both if you're weighing the options for a specific room.

Plan on an annual inspection, ideally before the first cold snap in October or November. A technician checks the burner, pilot assembly, venting, and gas connections, and cleans the glass and interior—a shorter job than a wood chimney sweep, but just as important for safe operation. Local gas appliance service providers in the Washington-Union-Pacific corridor typically charge somewhere in the $125–$225 range for a standard annual visit.

Wood has deep roots here—Franklin County sits in oak-hickory-walnut-maple country, and firewood is easy to come by, with no air quality restrictions or curtailment periods to plan around like you'd find in some western counties. Wood also keeps working with no power at all, which matters during an ice storm. Gas trades that hands-on ritual for instant, thermostat-controlled heat with no ash, no stacking, and no chimney sweep on the calendar. A lot of Franklin County homeowners end up with both: gas in the main living space for daily convenience, and a wood stove or fireplace elsewhere for backup heat and the atmosphere only a real fire provides.

If it was installed more than 15 years ago, probably. Older gas fireplaces keep a standing pilot light burning all the time, and that little flame can cost a couple hundred dollars a year. Newer models use pilot-on-demand ignition—the pilot lights only when you use the fireplace and goes out when you turn it off.

An insert is a fireplace that slides into a pre-existing wood-burning fireplace—if you don't have one, there's nothing to insert it into. A zero-clearance fireplace is built into a framed wall, which makes it the answer for remodels and new construction. Simple test: existing masonry fireplace means insert; blank or framed wall means zero-clearance.

Yes—by creating a comfort zone. A furnace heats every square foot of the house just to warm the one room you're in; a gas fireplace on low burns roughly a sixth of the gas a typical furnace does. Set the furnace around 55–60 degrees as a baseline, then heat the rooms your family actually uses. Families who heat this way commonly save $20–$60 a month.

If you're putting a fire in your house on purpose, it's best to work with an expert. Unless you're genuinely experienced in framing, gas line, vent pipe, and the national code on clearances to combustibles, have a professional do it—and ideally the same company that sells you the fireplace, so warranty, service, and liability all live under one roof.