Furnace Repair & Installation | Marin & Sonoma
Furnace repair, replacement, and installation across Marin and Sonoma County — same-day service from a licensed local crew since 1986.
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See all couponsWhy Homeowners Choose John Owens
- Family-run and California-licensed (#501853) since 1986 — nearly four decades of furnace work across both counties, backed by a 4.9-star Google rating
- Repair-first, not replace-first: our technicians try to bring your existing furnace back before they ever pitch a new one, and they show you the math either way
- Locally stocked vans mean genuine same-day furnace repair on most common failures — igniters, flame sensors, blower capacitors, and control boards — not a multi-day wait when the heat is out
- We actually know your house type: tight Mill Valley and Glen Ellen crawlspace and attic installs, Eichler closet units, and pre-code gravity furnaces in Petaluma and West End Santa Rosa
- Replacements are pulled and permitted to California code with proper Manual J sizing and combustion-air and CO safety checks — no guesswork, no oversized equipment
- One crew for the whole home: the same company handling your furnace also covers plumbing, AC, and heat pumps, so a heating upgrade that touches other systems gets handled in-house
Signs You Need Furnace Repair & Installation in
- No heat at all — the blower runs but only pushes cold air, usually a failed igniter, dirty flame sensor, or a gas valve issue
- Short-cycling — the furnace fires, runs a minute, then shuts off again, often a clogged filter or a tripping high-limit switch that strains the heat exchanger over time
- Banging, rattling, or rumbling on startup, or a furnace that won’t respond to the thermostat the way it used to
- Heating bills climbing while rooms still feel uneven — a sign of lost efficiency, duct leakage in the crawlspace, or an aging system working too hard
- Furnace is 15+ years old and needs another repair — at that age, a cracked heat exchanger or a repair nearing half the cost of replacement usually tips toward a new system
- Any rotten-egg or sulfur smell (possible gas leak) — shut the gas off, leave the house, and call us from outside right away
Frequently Asked Questions
Do you offer same-day furnace repair in Marin and Sonoma County?
Yes. Our vans are stocked locally, so we complete most furnace repairs on the first visit, with same-day response across both counties whenever our schedule allows — and we handle emergency no-heat calls when the cold can’t wait.
How do I know whether I need furnace repair or a full furnace replacement?
If your furnace is under about 15 years old and the fix is a single component, repair is almost always the better call. Once a system is older and a repair approaches half the cost of replacement — or the heat exchanger is cracked — we’ll walk you through both options before any work begins.
How much does furnace installation or replacement cost in the North Bay?
It depends on the system type, your home’s size, and ductwork condition, so we give a firm quote after a Manual J load calculation rather than a phone guess. Every replacement is installed to California code and properly permitted, and we’ll flag any rebates you qualify for.
Are your furnace technicians licensed in California?
Yes — John Owens Services is fully licensed (CA #501853) and insured for furnace repair, installation, and replacement, and we’ve served Marin and Sonoma homeowners since 1986.
Furnace Manufacturers
Find product information and owner resources for your furnace. Explore the manufacturer websites below.
Proudly Serving Marin & Sonoma
From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.
- Belvedere
- Corte Madera
- Cotati
- Fairfax
- Fountaingrove, Santa Rosa
- Glen Ellen
- Greenbrae
- Healdsburg
- Kentfield
- Kenwood
- Lagunitas
- Larkspur
- Larkspur area, Santa Rosa
- Marinwood
- Mill Valley
- Nicasio
- Novato
- Oakmont, Santa Rosa
- Penngrove
- Petaluma
- Rohnert Park
- San Anselmo
- San Rafael
- Santa Rosa
- Sausalito
- Sebastopol
- Tiburon
- Windsor