Reliable gas heat for Anna, Jonesboro, and every corner of Union County.
With winter lows averaging 25°F and roughly 3,977 heating degree days a year, Union County homes need steady, dependable warmth—not a project. Find the right gas fireplace, insert, or stove and get matched with a trusted local installer.
Every Project Starts From One of These Five Situations
Instant warmth, without tending a fire.
Union County sits at the southern tip of Illinois, tucked against the Shawnee National Forest, where oak, hickory, walnut, and maple have historically kept farmhouses warm through the winter. With a population spread thin across Anna, Jonesboro, Cobden, and Dongola—about 8,241 people across the whole county—most homes here are older, rural, and often heated with a mix of methods. Climate zone 4A and 3,977 heating degree days put Union County in a moderate cold-winter category—nowhere near the brutal stretch of a place like Duluth or Fargo, but still cold enough that a heat source running mid-January through February matters for comfort and for the electric bill.
Natural gas service reaches most of the incorporated areas—Anna and Jonesboro in particular—through Ameren Illinois, making direct-vent gas fireplaces and inserts a straightforward retrofit for in-town homes with an existing gas line. Outside those town limits, in the farmland and wooded acreage that makes up most of the county, propane tanks from regional suppliers fill the gap, and gas fireplaces run just as well off propane with the right orifice kit. Union County also has no air quality non-attainment designation and no winter burn curtailment periods like some parts of Illinois—so the choice between gas and wood here comes down to convenience and lifestyle, not regulation.

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Your zip code, your situation, and the fuel you're leaning toward—or let the answers point you to one.
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The brands dealers within 100 miles genuinely carry—real options, never a catalog mirage.
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Frequently Asked Questions
How much does a gas fireplace installation cost in Union County?
Most gas fireplace and insert installations in Union County run somewhere between $3,000 and $9,000, with the low end covering a direct-vent insert into an existing masonry fireplace where a gas line is already nearby, and the higher end covering new construction or a fireplace added to a room with no existing gas service. Homes in and around Anna and Jonesboro with Ameren Illinois natural gas already running to the house tend to land on the lower end. Homes further out in the county running on propane, or needing a new line trenched from the tank or meter, should expect the estimate to run higher. A local retailer will give you a firm number after walking the site.
Can I convert my existing wood fireplace to gas?
Yes, and it's a common project in the older farmhouses scattered around Union County. A gas insert slides into your existing masonry firebox and vents through a stainless liner run up your current chimney, so you keep the look of the original fireplace while gaining push-button heat. If the home already has natural gas or a propane tank on the property, the retrofit is mostly limited to the insert and liner work. If not, running a new gas line or setting a propane tank adds to the job—your installer will walk you through which fuel makes more sense given where the house sits in the county.
Should I use natural gas or propane for my fireplace?
It depends on where in Union County you live. Homes within Anna and Jonesboro's service areas typically have natural gas through Ameren Illinois already running to the house, which makes adding a gas fireplace simple if you already run a gas furnace or water heater. Outside those towns—which is most of the county's land area—propane is the standard, either from an existing tank or a new tank set by a regional propane supplier. Nearly every gas fireplace on the market today can be configured for either fuel; your installer just sets the correct orifice and regulator for whichever one you have.
Will my gas fireplace still work if the power goes out?
Most will, as long as you pick the right ignition system. Units with IPI (intermittent pilot ignition) run on a small battery backup that kicks in automatically when the power drops, so the fireplace still lights and runs even during an outage. Some brands, like Valor, take it a step further and generate their own electricity off the pilot's thermocouple, so there's no battery to remember at all. For rural Union County homes where ice storms or downed lines can knock out power for a stretch, that battery-free or battery-backed operation is worth asking your local dealer about directly.
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 call for new construction or a remodel with no existing hearth. A gas insert is built to drop into an existing masonry fireplace opening, using your current chimney as the vent path, which is the more common upgrade for Union County's older housing stock. A gas stove is a freestanding cast-iron or steel unit that sits out in the room like a traditional wood stove, but burns gas instead—a good option for a home without a masonry fireplace at all who still wants a stand-alone heat source rather than a wall unit.
Do I need a permit to install a gas fireplace in Union County?
Yes—new gas fireplace installations require both a building permit and gas line work performed or inspected by a licensed gas-fitter, coordinated through the Union County building and zoning office for unincorporated areas, or your local municipality if you're inside Anna or Jonesboro city limits. Most established hearth retailers in the area handle this paperwork as part of the installation quote, so you're not left coordinating the gas line, the venting, and the inspection separately.
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 a sealed pipe—they're the safer, code-friendly choice and the one most Union County installers recommend by default. Vent-free units burn directly into the room air and are legal in Illinois with proper room-sizing and oxygen-depletion sensors, but they add moisture and trace combustion byproducts to indoor air, which matters more in a tightly sealed, well-insulated newer home than in a drafty older farmhouse. For most homes in the county, a direct-vent unit is the straightforward answer—ask your local dealer if you're weighing a vent-free option for a specific room.
How often does a gas fireplace need to be serviced?
Plan on an annual inspection, ideally before the first cold snap in late fall. A technician checks the burner, pilot assembly, gas connections, and venting, and cleans the glass and interior—a much lighter job than sweeping a wood chimney, but it's what keeps the unit burning clean and the warranty intact. Local hearth service providers in the Anna and Jonesboro area typically handle this in a single visit for somewhere in the $150–$250 range.
Gas or wood—which makes more sense for a Union County home?
Wood has deep roots here—Union County sits right up against Shawnee National Forest hardwoods, and oak, hickory, walnut, and maple are all common, well-seasoned firewood species for homes that split and stack their own. Wood also keeps burning through a power outage, which matters on rural properties with longer utility response times. Gas trades that self-sufficiency for convenience: no splitting, no ash, no chimney sweep, and heat at the flip of a switch or a wall thermostat—a better fit for a primary living space used daily. Plenty of Union County homes run both: gas in the main room for everyday use, and a wood stove or insert elsewhere as backup heat and ambiance.
Why is my open fireplace making my house colder?
Open fireplaces suck—literally. As the fire burns, it consumes air your furnace already paid to heat and pulls it out through the chimney, so the house is actually colder after the fire goes out than before you lit it. An insert fixes this: it seals the chimney, puts fixed glass across the front, and turns that hole in your house into a real heat source.
Why is a fireplace insert so efficient?
An insert does two things: it seals the chimney completely, so you stop losing air you already paid to heat, and it radiates warmth into the room through the firebox and glass. Most add a heat-exchange fan that pulls cool room air underneath, wraps it around the hot firebox, and pushes it back out warm. Your home is more efficient before you've even lit the first fire.
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.
What is an in-home preview and do I need one?
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.
Find your gas fireplace in Union County.
Tell us a bit about your home in Anna, Jonesboro, Cobden, or anywhere else in Union County, and we'll match you with a trusted local dealer and send over your free Project Guide & Parts List—the exact parts, vent kit included, for your gas fireplace project.mall
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