Reliable gas heat for DeKalb County's long, cold winters.
With a long, demanding heating season and winter lows averaging 13°F, DeKalb County homes need heat that works every day of a long Illinois winter. Find the right gas fireplace or insert and connect with a trusted local dealer.
Every Project Starts From One of These Five Situations
Natural gas, not firewood, is what actually heats this farm country.
DeKalb County is flat Illinois prairie and row-crop farmland stretching from Sycamore and DeKalb—home to Northern Illinois University—out through Genoa, Sandwich, Somonauk, Cortland, and Kirkland. In climate zone 5A with a long, demanding heating season, winters here run about as demanding as Madison, WI, with sustained stretches well below freezing and average lows near 13°F. There's just no national forest or large public timberland in the county the way there is in a lot of wood-heat regions, so while scattered woodlots and fencerows do grow oak, hickory, walnut, and maple, DeKalb County never developed the cutting-permit culture or firewood economy you'd find further north or west—which is why wood stoves are essentially not part of the local heating picture.
What did take hold here is natural gas. Most incorporated communities in the county—DeKalb, Sycamore, Genoa, Sandwich—have natural gas service through Nicor Gas, and the overwhelming majority of homes already run a gas-fired furnace, which makes adding a gas fireplace or insert a straightforward tie-in rather than a new utility project. Outside city limits, on the working farmsteads that make up much of the county, propane tanks from regional suppliers fill the gap. Either way, a gas fireplace gives you instant, thermostat-controlled heat that doesn't depend on hauling or splitting anything—a real advantage when a January cold snap settles over the county for a week at a time.

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Frequently Asked Questions
How much does a gas fireplace installation cost in DeKalb County?
Because most DeKalb County homes already have a gas-fired furnace and existing gas service, converting an old wood-burning fireplace to a direct-vent gas insert is often the most affordable path—typically $3,500 to $7,500 depending on the insert model and whether a new gas line run is needed from the meter. A new built-in gas fireplace for a remodel or an addition, with fresh framing, venting, and gas line work, generally runs $5,000 to $10,000. Rural farmsteads without an existing gas line, or homes that need a new propane tank installed, tend to land at the higher end. A local dealer will give you a firm number after seeing your home.
Can I convert my existing wood fireplace to gas?
Yes, and it's one of the more common projects for older housing stock around DeKalb and Sycamore, where many homes built before the 1960s still have a masonry fireplace. A gas insert with a stainless liner run through the existing chimney is the standard approach, keeping the original mantel and surround while eliminating ash, creosote, and the need to source firewood—which matters in a county where there isn't much of a local firewood supply to begin with. Homes already on Nicor Gas service typically see lower conversion costs than those relying on propane, since there's no new tank or line extension to budget for.
Do I need natural gas, or can I use propane?
Either works, and which one applies to you mostly comes down to where in the county you live. Inside DeKalb, Sycamore, Genoa, and Sandwich, Nicor Gas provides natural gas service to most homes, so if you already have a gas furnace or water heater, adding a fireplace is a simple tie-in. Out on the county's unincorporated farmland—a large share of DeKalb County's land area—propane from a regional supplier is the standard fuel, usually stored in an above-ground tank on the property. Most gas fireplace models can be set up for either fuel; your installer just configures the correct orifice and regulator.
Will my gas fireplace work during a power outage?
Most modern gas fireplaces will, which matters in a county that sees its share of winter ice storms and downed lines on the regional grid. Units with intermittent pilot ignition (IPI) run on a battery backup that kicks in automatically if the power drops, so the fireplace still lights on demand—just remember to swap the batteries occasionally so they're not dead when you need them. Valor fireplaces skip batteries entirely: their pilot generates its own electricity through the thermocouple, so the unit works during an outage with no maintenance required. Ask your local dealer about the ignition system on any model you're considering if backup heat is a priority for your DeKalb County home.
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 major remodel. A gas insert is built to slide into an existing masonry fireplace opening, using the existing chimney as its vent path, which is the common route for older homes around DeKalb and Sycamore with a fireplace they're not using. A gas stove is a freestanding cabinet-style unit that sits on the floor like a wood stove but burns gas—a good fit for a room that never had a fireplace at all, including many ranch-style farmhouses common throughout the county. Most DeKalb County homeowners upgrading an existing fireplace go with an insert.
Do I need a permit to install a gas fireplace in DeKalb County?
Yes. If you're inside city limits, permitting runs through that municipality's own building department—DeKalb, Sycamore, Genoa, and Sandwich each issue their own permits. If your property is in unincorporated DeKalb County, permits go through the DeKalb County Planning & Building Department. Either way, the gas line work itself needs to be done by a licensed gas-fitter, which is one of the main reasons to work with an established local hearth dealer—they coordinate the gas line, venting, and inspection sign-off as one job instead of leaving you to line up separate trades.
What's the difference between vented and vent-free gas fireplaces?
Vented (direct-vent) gas fireplaces draw combustion air from outside and exhaust it back outside through a sealed pipe—they're the standard, code-compliant choice everywhere, including Illinois. Vent-free units burn gas directly into the room with no outside venting; they're legal in Illinois under specific room-sizing and ventilation rules, but they release some combustion byproducts indoors and aren't allowed at all in a handful of other states. For a DeKalb County winter that regularly drops well below freezing for extended stretches, direct-vent units are the more common and more strongly recommended option—they deliver real, sustained heat output without any indoor air quality tradeoffs.
How often should my gas fireplace be serviced?
Plan on an annual inspection, ideally before the county's heating season kicks in around late September or October. A certified technician checks the burner, pilot assembly, venting, and any gas connections, and cleans the glass and interior—a much lighter job than a wood-stove chimney sweep, but just as important for safe operation. Local gas appliance service providers in the DeKalb and Sycamore area typically charge somewhere in the $150–$250 range for a standard annual visit.
Should I consider wood or pellet instead of gas?
For most DeKalb County homes, gas is the practical answer, and it's worth being honest about why wood and pellet don't fit the same way they do in forested parts of the country. There's no national forest or large public timberland in the county, so wood heat never developed into a real firewood economy the way it has elsewhere—the oak, hickory, walnut, and maple in local woodlots are enough for an occasional fire, not a heating strategy. Pellet is a similar story: companies like Indeck Energy Services, Lignetics, and Somerset Pellet Fuel do operate in the region, but that production is mostly geared toward industrial and utility biomass markets rather than a local residential pellet-stove retail base, so pellet stoves are genuinely uncommon in DeKalb County homes. Gas, by contrast, ties directly into the Nicor Gas and propane infrastructure most homes here already use for their furnace—which is why it's the fuel that actually makes sense for this part of Illinois.
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.
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.
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.
Stove and Fireplace Dealers in DeKalb County
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