Instant Warmth for Knollwood's Long North Shore Winters.

For Knollwood's mostly older, established homes, a gas fireplace or insert installation typically runs $4,500 to $11,000. A direct-vent insert dropped into an existing masonry fireplace with a gas line already nearby sits on the lower end. Projects that require running new gas line, cutting through masonry for venting, or building out a new hearth wall in a remodel land toward the higher end. Given how many Knollwood homes have an original wood-burning fireplace that's rarely used, insert conversions are the most common project a local dealer will quote here.

Yes, and it's the most typical gas project in Knollwood specifically because so many of the area's homes still have an original masonry fireplace that sees little to no actual wood burning. A gas insert uses your existing chimney, run with a stainless liner, so the exterior look of the fireplace doesn't change. Expect $4,500 to $9,500 depending on the insert and whether a new gas line needs to be run from the meter. It's a straightforward way to get real, usable heat out of a fireplace that's currently just for show.

Natural gas, typically through Nicor Gas, reaches most of this part of Lake County, so the majority of Knollwood homes already have a gas line for the furnace and water heater—adding a fireplace is usually a matter of tapping into existing service. A smaller number of homes, particularly those on larger wooded lots at the edges of the village, run on propane with an above- or below-ground tank. Most gas fireplace models can be set up for either fuel; your installer configures the correct orifice and regulator for whichever you have.

Most direct-vent gas fireplaces will, as long as they use an IPI (intermittent pilot ignition) system with battery backup—the fireplace lights normally off the batteries even with the power out. This matters in Knollwood, where winter storms off Lake Michigan can knock out ComEd service for a stretch. Valor units take a different approach: the pilot's thermocouple generates its own electricity, so the fireplace works during an outage with no batteries required at all. Ask your local dealer about the ignition system on any unit you're considering if backup heat matters to you.

A gas fireplace is a fully built-in unit, framed into a wall—the right call for new construction or a full remodel. A gas insert slides into an existing masonry firebox and uses your current chimney as the vent path, which fits Knollwood's older housing stock well. A gas stove is a freestanding cast-iron or steel unit that sits on the floor like a wood stove but runs on gas—a good option for a room without any existing fireplace. Most Knollwood projects end up being inserts, simply because so many homes already have a fireplace opening to work with.

Yes. Knollwood is unincorporated, so building permits and gas line permits for a new fireplace installation go through the Lake County Planning, Building and Development Department rather than a village office. The gas line connection itself needs to be pulled by a licensed gas-fitter. Most established hearth dealers in the Lake County/North Shore area handle this coordination as part of the install, so you're not the one chasing separate permits for the gas work and the framing.

Vented (direct-vent) units draw combustion air from outside and exhaust it back outside through sealed piping—they're the standard choice and work in every room, including bedrooms. Vent-free units burn directly into the room and release some water vapor and combustion byproducts indoors; Illinois allows them but with strict room-size and ventilation requirements. In a village like Knollwood, where many homes are being updated with tighter insulation and newer windows, a direct-vent unit is the safer, more universally recommended option—it doesn't compete with your home's air for combustion or add moisture load to a well-sealed room.

Plan on an annual inspection, ideally before the North Shore's heating season ramps up in October or November. A technician checks the burner, pilot assembly, venting, and any electronic ignition components, and cleans the glass and interior. This is a much lighter job than chimney sweeping for a wood stove, but skipping it is how pilot and igniter problems go unnoticed until the coldest week of the year. Local gas appliance service providers typically charge $150 to $250 for the annual visit.

Knollwood's tight lot sizes, close-set homes, and lack of any rural wood-cutting culture mean solid-fuel appliances are essentially not part of the local housing picture—new wood stove and pellet stove installs are rare here compared to more rural parts of Lake County. That's not a regulatory issue; air quality concerns in this area are minimal. It's simply that gas fits the housing stock and lifestyle better: instant heat, no fuel storage, no ash handling, and it works well with the original masonry fireplaces so many Knollwood homes already have. If you're set on a wood-burning appliance, a local dealer can still source one, but expect them to point you toward gas first given what actually works in homes here.

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.

Fireplaces are like icebergs—bigger behind the wall than in front of it. Replacement means removing the surrounding tile or stone (the finish material laps onto the fireplace face), pulling the old unit, setting the new one in the same enclosure, and re-finishing the wall. A hearth professional can determine what's behind your wall without demolition during an in-home preview.

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.

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.