Warm Up Your Main Line Home Without the Woodpile.

Most gas fireplace and insert projects in Saint Davids run $5,000 to $12,000. Converting an existing masonry fireplace—common in this area's older stone colonials—to a direct-vent gas insert sits toward the lower end when a gas line is already nearby. New construction or a built-in gas fireplace in a remodeled family room, where framing, venting, and a fresh gas line run are all needed, pushes toward the higher end. Larger Main Line homes with taller chimneys or longer gas line runs from the street can push costs higher still. A local dealer will give you a firm number after seeing the space.

Yes, and it's one of the most common requests from Saint Davids homeowners with older stone or brick construction. Most of these houses have a masonry firebox that's spent decades burning oak, hickory, or cherry, and a gas insert can use that same chimney as the vent path with a stainless liner. Expect $5,000 to $9,500 depending on the insert and whether new gas line work is needed. Homes already on PECO's gas network with a line nearby are typically on the lower end of that range.

Both work fine. PECO Energy provides natural gas throughout most of Saint Davids and Radnor Township, so if your home already has a gas water heater, range, or furnace, adding a fireplace is usually a simple tie-in. On some of the larger, more rural-feeling lots at the edges of the township where gas mains don't run, propane is the standard workaround, either from an existing tank or a new one set by a local propane supplier. Nearly every gas fireplace on the market can be configured for either fuel—your installer just sets the correct orifice and regulator.

Most modern gas fireplaces will. Units with IPI (intermittent pilot ignition) run on a battery backup that kicks in automatically when PECO's grid drops, so the fireplace still lights on demand—just remember to keep fresh batteries in the unit. Valor fireplaces skip batteries entirely: their pilot generates its own electricity through a thermocouple, so the fireplace works during an outage with no maintenance required. For Saint Davids' older neighborhoods, where ice storms and downed limbs from mature trees can knock out power for a day or two, that detail is worth asking your local dealer about.

A gas fireplace is a fully built-in unit framed into a wall—typical for new construction or a remodeled family room. A gas insert drops into an existing masonry firebox, which describes the vast majority of Saint Davids' older stone and brick homes, and uses the existing chimney as its vent. A gas stove is a freestanding cast-iron or steel unit that sits on the floor like a wood stove but burns gas, a good fit for a den or converted sunroom without an existing fireplace. For most Saint Davids homeowners with a period fireplace they want to modernize, the insert is the natural choice.

Yes—Saint Davids falls under Radnor Township, and the Radnor Township Building & Planning Department requires both a building permit and a licensed gas-fitter's sign-off for new gas line work. Most reputable local dealers handle the permit filing and inspection scheduling as part of the installation, which matters here because Radnor's older housing stock sometimes turns up surprises (undersized flues, older masonry) that need to be documented for the inspector. Skipping the permit can complicate things later at resale, since township records are checked during home inspections.

Vented (direct-vent) gas fireplaces draw combustion air from outside and exhaust it back outside through a sealed pipe—they're the cleanest and most universally recommended option, and what most local installers put in Saint Davids homes. Vent-free units burn directly into the room and are legal in Pennsylvania under specific room-size and ventilation rules, but they release some moisture and combustion byproducts indoors. Given the tight, high-ceilinged rooms typical of older Main Line homes, most homeowners here choose direct-vent for both air quality and the stronger, more consistent flame appearance. Ask a local dealer to walk you through both if you're deciding.

Plan on an annual inspection, ideally in early fall before the heating season starts. A technician checks the burner, pilot assembly, venting, and gas connections, and cleans the glass—a much lighter job than sweeping a wood chimney, but still important since a dirty or misaligned pilot is the most common cause of a fireplace that won't light reliably. Local gas appliance technicians typically charge $150 to $250 for this visit, and it's worth scheduling before Delaware County's first cold snap rather than after.

Given that Saint Davids sees no significant air quality restrictions and plenty of homes already have working masonry fireboxes, both fuels are genuinely on the table here. Wood—oak, hickory, maple, and cherry are all common firewood species locally—offers real ambiance, higher raw heat output, and works without electricity. Gas offers instant on/off convenience, no ash or creosote to manage, and a cleaner look that many homeowners prefer for a formal living room or family room that sees daily use. In practice, most Saint Davids households that convert do so for convenience in a primary living space while keeping wood-burning capability elsewhere, like a den or screened porch.

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.

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.

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.

For an average home—covering the fireplace, the vent pipe, and basic installation—a budget between $3,900 and $5,500 gives you a lot of options across wood, gas, and pellet. By the time you add finish work, gas line, and electrical, the average complete installation lands between $5,000 and $12,000 all-in. In a remodel or new build, a good rule is to put about 2.5% of the total project cost toward the fireplace.