Keep Your Family Warm and Safe—No Matter What

Generally, no. BAAQMD Regulation 6, Rule 3 has prohibited the installation of new wood-burning fireplaces in new construction throughout the Bay Area, including San Mateo County, since 2008. If you're building new or doing a major remodel, the code path for a wood-burning appliance is closed—homeowners in that situation typically look at a gas fireplace or an EPA-certified pellet appliance instead. The one path still open for wood specifically is replacing an existing, older wood-burning device with a certified low-emission unit, which the rule does allow.

You can keep an existing wood-burning fireplace or stove installed before the rule changes, but you're subject to mandatory no-burn restrictions on BAAQMD "Spare the Air" alert days, which can happen a dozen-plus times over a Bay Area winter when regional particulate levels climb. Many Menlo Park homeowners with an older, inefficient open-hearth fireplace choose to replace it with an EPA-certified wood insert instead—it's allowed under the existing-appliance replacement provision, burns dramatically cleaner, and isn't subject to the same removal-at-sale pressure that some older units face.

Spare the Air is BAAQMD's mandatory winter burn-ban program: on days when forecast particulate pollution is high, wood burning in any fireplace, stove, or insert (certified or not, with limited exceptions for a household's sole source of heat) is prohibited bay-wide, including in Menlo Park and the rest of San Mateo County. Violations carry fines. If you're considering a wood appliance here, plan on it being a supplemental or occasional-use unit rather than a fuel you can count on every cold night—gas or electric is a more reliable everyday backup precisely because it isn't subject to these bans.

For most homes, not as a primary heat source. With winter lows averaging around 39°F and a mild, short heating season, Menlo Park doesn't have the sustained cold that makes a wood stove the backbone of a home's heating plan the way it would in a place like Fargo, ND or International Falls, MN. Where wood heat still makes sense locally is ambiance in an existing fireplace, occasional evening use, or as a genuinely off-grid backup during a PG&E outage—not as the thing standing between your family and a cold house all winter.

Pellet stoves face a similar combustion-appliance framework under BAAQMD rules and, like wood, see limited demand in Menlo Park given the mild climate—most local homeowners considering a hearth upgrade end up choosing gas or electric for daily use instead. If you're set on burning fuel rather than flipping a switch, a certified pellet insert replacing an existing appliance is sometimes a workable middle ground, but it isn't the slam-dunk exemption it is in some other air districts, so confirm current rules with your installer before assuming it clears the bar automatically.

In the Bay Area, an EPA-certified wood insert replacing an existing masonry fireplace typically runs higher than the national average—commonly $6,000 to $12,000 once you factor in a stainless chimney liner, code-required clearances, and Peninsula labor rates. The exact number depends heavily on the condition of your existing chimney and whether it needs relining or masonry repair before a new insert can go in. A local installer will confirm the real number after inspecting your chimney in person.

Menlo Park is already flagged as a non-attainment area for air quality, and fall wildfire smoke from Northern California fires regularly pushes regional air quality into unhealthy ranges independent of any burning happening locally. Adding household wood smoke on top of that during smoke season is discouraged, and BAAQMD Spare the Air alerts are also called during wildfire smoke events, not just cold, still winter nights. It's one more reason most Menlo Park households treat wood as occasional-use rather than daily heat.

A replacement wood insert or stove installation requires a building permit through the City of Menlo Park Building Division (or San Mateo County Building Services if you're in an unincorporated pocket), and the appliance itself must meet EPA New Source Performance Standards. Your installer will typically confirm the device qualifies under BAAQMD's existing-appliance replacement provision as part of pulling the permit—this isn't a step to skip, since an uncertified swap can create problems at resale.

Given the new-construction ban on wood fireplaces, the Spare the Air burn restrictions, and a mild climate that doesn't demand heavy-duty heat, most Menlo Park homeowners land on a gas fireplace for daily-use warmth and ambiance, or an electric fireplace for flexibility in rooms without gas access—even with PG&E's residential rate running a relatively high $0.317 per kWh, electric units are typically used for supplemental zone heat rather than whole-home heating, which keeps the operating cost manageable. Wood remains the right call mainly for households replacing a legacy fireplace who want the specific experience of a real wood fire on the occasional clear-air evening.

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.

Four numbers tell you what fits: the front width, the front height, the back width, and the overall depth of your existing fireplace opening. Grab a tape measure, jot those down, and snap a photo of the wall—those two things do more to move your project forward than anything else you can do today.

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.

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.