Instant gas warmth for Belleville, Illinois homes.
Clean, on-demand heat for the century-old brick homes and newer builds around St. Clair County. Find the right gas fireplace or insert, and get matched with a trusted local dealer.
Every Project Starts From One of These Five Situations
Reliable heat that fits Belleville's mix of old and new.
Belleville sits in the Metro East, just across the Mississippi from St. Louis, in a 4A climate zone with about 4,209 heating degree days and an average winter low near 24°F. That's a real winter—cold enough for regular home heating—but far milder than places like Madison, WI, where HDD counts run closer to 7,600. Belleville's housing stock reflects the city's age: a lot of early-to-mid-20th-century brick and frame homes in the 62221 and 62220 zips still have a masonry fireplace that was built more for a mantel and a cozy room than for serious heat output.
Natural gas service reaches most of Belleville proper, with Ameren Illinois the utility most homeowners already have on their water heater or furnace, which makes adding a gas fireplace or converting an old wood-burning fireplace straightforward. Out in the less-dense pockets of St. Clair County served by Southwestern Electric Cooperative, propane is often the more practical fuel for a hearth appliance. Either way, a gas fireplace gives Belleville homeowners instant, consistent heat without the ash, smoke, or wood storage that a masonry fireplace built in 1948 was never really designed to handle well.

Three steps. No salesperson until you're ready.
Tell us about your project
Your zip code, your situation, and the fuel you're leaning toward—or let the answers point you to one.
See what's actually available
The brands dealers within 100 miles genuinely carry—real options, never a catalog mirage.
Get your dealer & Project Guide
A trusted local dealer, plus the free Project Guide & Parts List that names every component of the job.
Frequently Asked Questions
How much does a gas fireplace installation cost in Belleville?
Most gas fireplace projects in Belleville run somewhere between $4,000 and $9,500. A direct-vent insert dropped into an existing masonry fireplace with a gas line already nearby sits toward the lower end. A new built-in gas fireplace for a remodel or an addition—with framing, direct-vent piping, and a fresh gas line run from the meter—lands in the middle to upper range. Homes that need a gas line extended a long distance, or that require a propane tank because they're outside Ameren Illinois's gas footprint, can run higher. A local dealer will give you a firm number after seeing the space in person.
Can I convert my existing wood fireplace to gas?
Yes, and it's one of the most common requests we hear from Belleville homeowners, especially in the older brick houses around downtown and the near neighborhoods where a decorative masonry fireplace has sat mostly unused for years. A gas insert typically slides into that existing firebox and vents through the current chimney with a stainless liner, which keeps the install cost down—usually $4,000 to $8,500 depending on the insert and whether new gas piping is needed. It's a good way to get real, usable heat out of a fireplace that was probably never that efficient to begin with.
Do I need natural gas, or can I use propane?
Either works, and which one makes sense depends on where in St. Clair County you are. Inside Belleville proper, most homes already have natural gas through Ameren Illinois for the furnace or water heater, so adding a fireplace is usually a simple tie-in. Out toward the edges of the county where Southwestern Electric Cooperative provides the electric service, natural gas lines are often not run to the property, and propane—either from an existing tank or a new one set by a local supplier—is the standard fallback. Most gas fireplace models can be configured for either fuel; your installer sets the correct orifice and regulator for whichever you have.
Will my gas fireplace still work if the power goes out?
Most modern gas fireplaces will, with the right ignition system. Units with intermittent pilot ignition (IPI) run on battery backup—typically a few AA batteries tucked inside the unit—so the fireplace still lights and runs normally when Ameren Illinois's grid goes down, which happens periodically in the Metro East during ice storms and summer storm season alike. Valor fireplaces take a slightly different approach: their pilot generates its own electricity through a thermocouple, so there's no battery to remember to replace at all. Worth asking about directly when you're comparing units at a local showroom.
What's the difference between a gas fireplace, gas insert, and gas stove?
A gas fireplace is a fully built-in unit framed into a wall—the right choice for new construction or a remodel where there's no existing masonry firebox. A gas insert is built to slide into an existing masonry fireplace and use the current chimney as its vent path, which is exactly the situation in a lot of Belleville's older housing stock. A gas stove is a freestanding cabinet-style unit that sits on the floor and doesn't need an existing fireplace at all—a good option for a room that never had one. For most homeowners here with a fireplace already built into the house, an insert is the simplest and most cost-effective upgrade.
Do I need a permit to install a gas fireplace in Belleville?
Yes. Within city limits, gas fireplace installations go through the City of Belleville's building and codes review process, which covers both the construction permit and the gas line tie-in. Outside the city, unincorporated parts of St. Clair County are handled through the county's building department instead. The gas line portion has to be done by a licensed gas fitter regardless of jurisdiction, which is one of the main reasons to go through an established local hearth dealer—they coordinate the venting, framing, and gas work together instead of leaving you to manage separate contractors and separate inspections.
Should I get a vented or vent-free gas fireplace?
Vented (direct-vent) gas fireplaces pull combustion air from outside and exhaust the byproducts back outside through sealed piping—they're the standard recommendation almost everywhere, including Belleville. Vent-free units burn directly into the room and are legal in Illinois, but they come with strict room-size and ventilation requirements, and they release some moisture and combustion byproducts into your living space. Since Belleville doesn't have the air quality restrictions you'd see in a nonattainment area, the choice here really comes down to preference and room layout rather than local air rules—but most local dealers will still steer first-time buyers toward direct-vent for the cleaner indoor air and broader model selection.
How often does a gas fireplace need to be serviced?
Plan on an annual inspection, ideally before the start of heating season. A technician checks the burner, pilot or ignition system, venting, and gas connections, and cleans the glass and interior—a much smaller job than a wood chimney sweep, but it matters for safety and for keeping the glass from clouding with mineral deposits over time. Local service providers in the Belleville area typically charge somewhere in the $125 to $200 range for a standard annual inspection on a direct-vent unit.
Gas vs. electric fireplace—which makes more sense for my home?
Electric fireplaces are cheaper to install (often $400 to $1,200), need no venting or gas line at all, and run on whatever electric utility you already have—Ameren Illinois at roughly $0.12/kWh in most of Belleville, or Southwestern Electric Cooperative at around $0.14/kWh further out. That makes electric a good fit for a supplemental unit, a rental property, or a room where running gas line isn't practical. But electric units produce less real heat and, unlike a gas fireplace with battery-backed ignition, they stop working entirely the moment the power drops—which matters here given the occasional ice storm knocking out lines in the Metro East. For a room you actually want to heat through a Belleville winter, gas is usually the stronger choice; for ambiance in a spot that doesn't need much heat, electric can make sense.
What's the difference between an insert and a zero-clearance fireplace?
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.
Is my gas fireplace wasting gas?
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.
Can I install a fireplace myself?
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.
Can a fireplace actually lower my heating bill?
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.
Nearby Dealers
Hearth shops serving Belleville and the surrounding area.
Find your gas fireplace in Belleville.
Tell us a bit about your home and we'll match you with a trusted local dealer and send over your free Project Guide & Parts List—a plan for your Belleville gas fireplace project with the exact parts, including the vent kit, and the dealer we recommend for the install.
Find Your Fireplace →