Mon–Fri 8:00AM – 5:30PM

Furnace Repair & Installation in Mill Valley, CA

Same-day furnace repair, service, and installation for Mill Valley's canyon cottages and Mount Tam hillside homes.

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Local ExpertsSince 1986
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In Mill Valley, your furnace earns its keep. Down in Old Mill, Blithedale Canyon, and Homestead Valley, the redwoods and fog off Mount Tam keep the sun off the canyon floor, so the heat runs hard from the first marine-layer morning of fall straight through spring. We repair, service, and install gas and electric furnaces in the older Craftsman cottages and contour-hugging hillside homes that make this town what it is, and we know the damp crawlspaces and tucked-away furnace closets those houses hide.

Why Mill Valley Homeowners Choose John Owens

  • Marin-based since 1986 with a 4.9-star rating, fully licensed (CA #501853) and insured for furnace repair, replacement, and installation
  • Same-day service across Mill Valley, with stocked trucks that fix most furnaces on the first visit
  • We know the local housing stock: Craftsman cottages, mid-century hillside homes, and Strawberry and Tam Valley flats, plus the attic and crawlspace furnaces they hide
  • Repair-first by default — we diagnose and restore your existing furnace before ever recommending you replace it
  • Comfortable on tight, contour-following Mill Valley driveways and steep lots where a furnace swap takes real planning
  • Honest, upfront pricing with no surprise add-ons, and clear guidance when a heat-pump conversion is genuinely the smarter call under Marin's electrification rules

Signs You Need Furnace Repair & Installation in Mill Valley

  • Cold spots and rooms that never warm up, especially on shaded canyon-floor homes in Old Mill or Blithedale
  • Rust, soot, or a sharp metallic smell near the furnace — common where coastal damp corrodes older heat exchangers and flues
  • Rattling, scratching, or chewed ductwork from rodents nesting after coming in off wooded redwood and oak lots
  • Short cycling, a furnace that won't stay lit, or a pilot and burner that keep dropping out
  • Climbing PG&E bills from a 15-plus-year-old furnace working overtime against the fog and damp

Frequently Asked Questions

Do you offer same-day furnace repair in Mill Valley?

Yes. Our trucks are stocked for same-day furnace repair across Mill Valley, and we fix most furnaces on the first visit. We're licensed (CA #501853) and serve the canyon neighborhoods and the Tam Valley and Strawberry flats alike.

How do I know if I need furnace repair or a full furnace installation in Mill Valley?

If your furnace is under 15 years old and the issue is isolated, repair is usually the right call, and we always try that first. For older units with a cracked heat exchanger or repeated failures, a new furnace installation is often safer and cheaper over time, and we'll size it correctly for your home.

Why do furnaces fail faster in Mill Valley than in drier parts of Marin County?

The marine fog off Mount Tam and damp crawlspaces under hillside homes speed up rust on heat exchangers, flues, and ductwork. Annual furnace service catches that corrosion early, and our furnace service covers homes throughout Marin County.

Can you install a furnace or heat pump in an older hillside home with tight access?

Absolutely — steep, contour-following lots are routine for us. We handle attic, closet, and crawlspace installs in Mill Valley's older Craftsman and mid-century homes, and we'll walk you through whether a high-efficiency furnace or a heat-pump conversion fits your house and budget.

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.

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Schedule service with our trusted local team today.

Serving Marin & Sonoma Counties

Good plumbing, heating, and air conditioning systems are vital in every North California home. John Owens Services, Inc. is proud to be the expert plumbing company you can count on