Find the Right Fireplace for Every St. Louis County Home.

For most homes, gas. Spire Energy's extensive service territory across the county's nearly 90 municipalities means most homes already have a gas line, and a direct-vent gas fireplace or insert ties into that existing infrastructure with minimal construction. Electric fireplaces are a strong second choice—no venting required, which makes them popular for condos, finished basements, and newer builds in areas like Chesterfield where zero-clearance installs are common. Wood fireplaces mostly exist as decorative features in older homes with existing masonry chimneys (common in Webster Groves and Kirkwood), rather than as new installs. Pellet stoves are rare here—the county's mild winters (25°F average low, 4,292 HDD) and near-universal gas access remove most of the reasons homeowners elsewhere choose pellet as a wood alternative.

In most cases, yes, but the process depends entirely on which of the county's nearly 90 municipalities you're in. Clayton, Chesterfield, Ballwin, and Kirkwood each maintain their own building department with their own permit fees and inspection schedules; if you're in an unincorporated area, permits go through the St. Louis County Department of Public Works instead. Gas fireplace and insert installations typically require both a building permit and a licensed gas-fitter for the line connection. Electric fireplaces usually don't require a permit unless it's a built-in installation with new wiring or a dedicated circuit. Most local hearth retailers handle the permit paperwork for whichever municipality you're in as part of the installation quote.

No county-wide restrictions of the kind you'd see in wildfire-prone or inversion-prone western counties—St. Louis County isn't a non-attainment area and doesn't run seasonal burn curtailment programs. That said, because the county is densely subdivided into close-set neighborhoods, some individual municipalities have nuisance ordinances covering smoke drifting onto neighboring properties, particularly in older, tightly-packed suburbs. If you're restoring an existing wood fireplace, check your specific municipality's code rather than assuming county-wide rules apply.

It comes down to infrastructure and climate. St. Louis County's winters are real but moderate—a 25°F average low and 4,292 heating degree days, roughly half what you'd see in Duluth, Minnesota—so wood or pellet as a primary heat source isn't the necessity it is farther north. Combine that with Spire Energy's near-universal gas coverage and dense municipal zoning across the county's nearly 90 cities, and there's little practical case for installing a new wood stove or pellet stove. Where wood does show up is in older homes with an original masonry fireplace—homeowners in Webster Groves or University City sometimes add a wood or gas insert to an existing chimney rather than build new venting from scratch.

Most St. Louis County retailers focus on gas and electric, since that's where the vast majority of demand sits. A smaller subset also carry wood inserts for retrofitting an existing masonry chimney, and pellet products are typically available only through specialty dealers or the regional suppliers who serve the handful of pellet stove owners in the county. If you're restoring an older fireplace and aren't sure whether gas, electric, or wood makes sense for your specific chimney, look for a retailer who explicitly lists insert experience—that's usually the differentiator, not a full four-fuel showroom.

Gas fireplace, insert, or stove: roughly $3,500–$9,000 depending on whether an existing gas line is in place or new line work is needed. Electric fireplace: $200–$3,000 for the unit itself, plus $400–$1,200 in labor for anything beyond a plug-and-play wall unit. Wood insert retrofit into an existing masonry chimney: roughly $3,000–$6,000, mostly labor and liner work rather than new construction. Pellet stove: $3,500–$6,500 for the smaller number of installs each year. Exact pricing depends on which of the county's nearly 90 municipalities you're in and their specific permit fees—see the county + fuel pages above for retailer-specific detail.

On average, a fireplace adds back to the home about the same amount you spent installing it. Add the monthly savings from heating the rooms you actually use instead of the whole house—often hundreds of dollars a year—and the value case is strong before you even count what a fire does for how your family uses the room.

Match the fuel to your life, not the other way around. Wood: lowest fuel cost and total power-outage independence, but you're hauling and stacking. Gas: press a button, set a thermostat, no maintenance to speak of. Pellet: wood economics with automatic feeding, in exchange for weekly cleaning and a need for electricity. Electric: plugs in anywhere with honest supplemental heat. Nobody regrets the fuel that fits how they actually live.

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.

It's a visit where a hearth professional measures your space, confirms the model you picked actually works in your home, and walks the specs—framing, gas line, venting, finish work—before anything is ordered. Some details you just can't know until you see the house. Never make a down payment without one; it's the single most-skipped step that burns buyers.