Add real warmth to your Cobb County home—without a chimney.

A plug-in electric insert or mantel package that uses an existing outlet typically runs $300 to $700 installed, since there's no electrical work beyond placement. A built-in wall unit or a fireplace wired into a new circuit—common in East Cobb and Kennesaw remodels—runs higher, generally $800 to $1,500, once you factor in a licensed electrician running a dedicated line and any framing or trim work. Converting an old masonry wood fireplace to a electric insert in an older Marietta or Smyrna home is usually on the lower end, since the existing opening does most of the work. Local dealers will quote a firm number after seeing your space.

A simple plug-in unit that runs off an existing outlet generally doesn't require a permit. A hardwired built-in unit does need an electrical permit, since a licensed electrician is adding or modifying a circuit—that permit comes from Cobb County Community Development for unincorporated areas, or from the city building department directly if you're inside Marietta, Kennesaw, Smyrna, Acworth, or Powder Springs city limits, each of which issues its own. Most hearth dealers coordinate the electrical permit as part of the install so you're not chasing paperwork yourself.

Because Cobb County's winters rarely demand serious heat output—32°F average lows is mild compared to the northern half of the country—most electric fireplaces here are sized for ambiance first and supplemental warmth second. A smaller insert or wall unit (1,000-1,500 BTU heat setting) comfortably takes the chill off a single room like a den or primary bedroom. Larger built-in units with 4,600-5,000 BTU heaters can supplement a whole open-concept living area in a newer Kennesaw or Acworth home on the coldest nights of the year, which in Cobb County are genuinely few. A local dealer will walk through your room size and layout before recommending a unit.

An electric insert is built to slide into an existing fireplace opening—the natural choice if you're converting an old masonry wood fireplace in a Marietta or Smyrna home that hasn't seen a real fire in years. A wall-mounted unit is a slim, framed-in fixture set into drywall, popular in newer East Cobb and Vinings construction where there's no existing hearth at all. A mantel package pairs a freestanding or recessed electric firebox with a surrounding mantel and hearth surround, giving the classic fireplace look in a room that never had one. All three run on standard household power and skip the venting and gas line entirely.

Running costs are modest. A typical electric fireplace on its heat setting draws around 1,500 watts, which at current Georgia Power and Cobb EMC residential rates works out to roughly 15-20 cents per hour of use. Most Cobb County homeowners run theirs a few hours in the evening on the handful of genuinely cold nights each winter, plus occasionally for ambiance with the heater off—which draws almost nothing. Compared to running central HVAC to heat an entire home, zone-heating a single room with an electric fireplace is a low-cost way to stay comfortable without touching the thermostat.

Yes, and it's one of the more common projects local dealers handle in Cobb County's older housing stock—plenty of 1960s through 1980s homes in Marietta, Smyrna, and Mableton have a masonry fireplace that's sat cold for years because nobody's burning oak or hickory cordwood in a Zone 3A climate. An electric insert drops into that existing opening, usually without any masonry demo, and gives you real flame-look ambiance and supplemental heat with a standard outlet or a simple new circuit. It's typically the least expensive of any fireplace conversion since the opening, mantel, and surround are already in place.

It's usually the best fit. Many condo associations and HOAs across Cobb County's growing townhome developments in Kennesaw, Smyrna, and Powder Springs restrict or outright prohibit open-flame gas or wood appliances but have no issue with a code-compliant electric unit, since there's no combustion, no venting penetration through a shared wall, and no fuel storage. A plug-in model can typically go in without any association approval at all; a hardwired built-in may need a quick sign-off depending on your specific HOA's rules. Check your governing documents, but electric is the fuel least likely to run into a wall.

Most quality electric fireplaces last 10 to 15 years with essentially no maintenance—there's no chimney to sweep, no gas line to inspect, and no combustion byproducts to worry about. The main components that eventually need attention are the LED flame-effect bulbs or light strips, which are user-replaceable, and the heater fan, which can accumulate dust over years of use and benefits from an occasional vacuum. There's no annual inspection requirement like there is for gas or wood appliances, which is part of why electric appeals to Cobb County homeowners who want the look of a fireplace without the upkeep.

Gas delivers more real heat output and a more authentic flame, and it's a solid choice in Cobb County homes with natural gas service already run for a furnace or water heater. Electric wins on installation simplicity—no gas line, no venting, no combustion permit—and on flexibility, since a unit can go anywhere there's an outlet, including condos and HOA-restricted properties where an open flame isn't allowed. Given how mild Cobb County winters run, with a heating season that's a fraction of a northern climate, many homeowners find electric delivers all the ambiance they actually need without the cost of a gas line installation. Homes that already have gas plumbed in often go that route anyway for the stronger flame presentation; homes without it usually land on electric.

Yes—with an asterisk. Fireplaces are hot and TVs don't like heat. Either put a mantel between them to deflect rising warmth, or choose a fireplace with heat-management technology that creates a cool zone on the wall above—the wall stays around 125 degrees, barely warm, while the room still gets full heat. If you like clean lines and don't want a mantel, heat management is the answer.

Yes—most put out around 4,800–5,000 BTUs from a standard outlet, which comfortably warms a bedroom, office, or den as a comfort-zone heater. What they won't do is carry a whole house the way wood, gas, or pellet can. Think of electric as ambiance-first with honest supplemental heat: flames on with no heat in July, flames plus warmth in January.

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.

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.