Instant Heat for Long Island Winters.

On Long Island, a gas fireplace or insert installation typically runs $5,500 to $12,000, depending on the unit, the venting path, and whether new gas line work is needed. A direct-vent insert going into an existing masonry fireplace with gas already run to that wall sits toward the lower end. A new built-in gas fireplace as part of a remodel—with framing, venting through an exterior wall, and a fresh gas line—lands in the middle to upper range. Homes that need a longer gas line run from the meter, or a propane tank set for homes off the gas main, push toward the higher end. A local dealer will give you a firm number after seeing your home.

Yes, and it's one of the more common projects in Coram's older housing stock, much of it built with the traditional oak- and maple-framed masonry fireplaces typical of Long Island homes from the 1960s through 1980s. A gas insert slides into the existing firebox and vents through a stainless liner run up your current chimney, so you keep the look of the original fireplace while gaining real, consistent heat output. Expect $5,000 to $9,500 for the conversion in most cases, with the final number depending on chimney condition and whether the gas line already reaches that room.

Either works, and it comes down to what your house already has. Most of Coram is on the natural gas distribution network serving central Suffolk County, so if your furnace, water heater, or range already runs on gas, adding a fireplace is a simple tie-in. For homes without gas service nearby, propane is the standard fallback—a local propane supplier sets a tank and the fireplace is configured with a propane orifice instead of a natural gas one. Nearly every gas fireplace and insert on the market can be built for either fuel; you just need to tell your installer which one you're running.

Most modern gas fireplaces will, which matters on Long Island where nor'easters and summer storms both take down power for days at a time. Units with intermittent pilot ignition (IPI) run on a small battery backup that kicks in automatically when line power drops, so the fireplace lights and operates normally off batteries alone. Valor fireplaces go a step further—their pilot assembly generates its own electricity through the thermocouple, so there's no battery to remember to replace. If backup heat during an outage matters to you, ask your local dealer which ignition system a given model uses before you buy.

A gas fireplace is a fully built-in unit installed into a wall or framed enclosure, most common in new construction or a remodel. A gas insert is built to slide into an existing masonry fireplace opening, turning a drafty old hearth into a sealed, efficient heat source using the chimney you already have. A gas stove is a freestanding cast-iron or steel unit that sits on the floor and vents through a wall or ceiling, similar in footprint to a wood stove but running on gas. For the many Coram homes with an existing fireplace, an insert is usually the straightforward upgrade; homes without one typically go with a built-in unit or a freestanding stove instead.

Yes. Coram falls under the Town of Brookhaven, and any new gas fireplace or insert installation requires a building permit along with sign-off on the gas line work, which has to be done by a licensed gas-fitter. Most hearth dealers who do installs in Suffolk County handle the permit filing and inspection scheduling as part of the job, so you're not stuck coordinating the Town, a plumber, and an installer separately.

Vented (direct-vent) gas fireplaces pull combustion air from outside and exhaust it back outside through a sealed pipe, keeping combustion byproducts entirely out of the house. Vent-free units burn directly into the room without external venting and are legal in New York within specific room-size and BTU limits, but they release some water vapor and combustion gas into your living space, and they're generally not recommended for bedrooms or smaller, tightly sealed rooms. In practice, most Coram installs are direct-vent—they're the safer default for year-round use and give an installer more flexibility on where the unit goes in the house.

Plan on an annual inspection, ideally in early fall before you start using it regularly. A technician checks the burner, pilot assembly, venting, and gas connections, and cleans the glass and interior. It's a lighter-touch job than sweeping a wood chimney, but skipping it is how you end up with a pilot that won't stay lit or a sooted-up glass panel. Local hearth service providers typically charge $150 to $250 for the annual visit.

Electric fireplaces are simple to install (most just plug into a standard outlet) and produce zero emissions, but Long Island's residential electric rates run well above the national average—LIPA-served accounts sit around $0.25 per kWh, and Fishers Island customers even higher near $0.38—which makes an electric unit a relatively expensive way to produce real heat over a full winter. Gas costs more upfront to install because of the gas line and venting work, but it heats a room far more cheaply on a per-BTU basis and holds up as a legitimate secondary heat source, not just ambiance. If you want supplemental heat that actually offsets your furnace on cold nights, gas is the better long-term bet; if you want a low-commitment accent feature with no venting at all, electric is the easier install.

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.

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.

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.

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.