Mon–Fri 7:30AM – 5:30PM

Air Conditioning Repair & Installation | Marin & Sonoma

Expert AC repair, installation, and replacement for homes across Marin and Sonoma County — same-day service when the heat hits.

Licensed & InsuredProfessionals
Quality WorkGuaranteed
Local ExpertsSince 1986
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From the fog-cooled hills of Mill Valley to the triple-digit afternoons of Santa Rosa and Sonoma, cooling needs swing wildly across our two counties — and a lot of older North Bay homes were never built with central air in mind. John Owens Services has been keeping local families comfortable since 1986, whether that means a fast AC repair before a heat wave, a clean install in a 1950s San Rafael ranch with no existing ductwork, or a full system replacement that finally cools the upstairs bedrooms. We diagnose the real problem first, quote honestly, and back every job with our licensed (CA #501853) crews.

Why Homeowners Choose John Owens

  • Local since 1986 — we know how Marin and Sonoma homes are built, from Petaluma Victorians and Eichlers to hillside additions where ductwork was never run, so we right-size every system instead of guessing
  • Same-day AC repair during the heat waves that now hit Novato, Santa Rosa, and Sonoma hard — when an aging condenser quits on a 100-degree day, you reach a real technician, not a call center
  • Ductless mini-split specialists for the many older North Bay homes with radiators or wall heat and no place to add ducts — comfortable cooling without tearing the house apart
  • Straight, written estimates on AC replacement: we explain SEER ratings, what actually failed, and whether a repair makes more sense than a new system — no scare tactics, no upsells
  • a 4.9-star Google rating and happy customers from neighbors in San Rafael, Petaluma, Mill Valley, Sebastopol, and across both counties — reputation we have earned one job at a time
  • Licensed (CA #501853), insured, and tidy: we protect your floors, haul away the old equipment, and leave the job site cleaner than we found it

Signs You Need Air Conditioning in

  • Warm or weak airflow on hot days — your AC runs but the inland heat in Santa Rosa or Sonoma never quite breaks, a classic sign of low refrigerant or a tired compressor
  • The system is 12 to 15+ years old and the repair bills are stacking up — common in homes where AC was added years after the house was built, and a strong cue to weigh replacement
  • Some rooms cool fine while upstairs or back bedrooms stay stuffy — usually undersized or leaky ductwork in older Marin and Sonoma additions
  • Rising energy bills with no change in habits — an inefficient or failing unit works overtime, especially during longer, hotter North Bay summers
  • Loud rattles, burning smells, water pooling at the indoor unit, or a breaker that keeps tripping — stop and call before a small fault becomes a full failure

Frequently Asked Questions

Do you offer same-day AC repair in Marin and Sonoma County?

Yes — when a heat wave hits the North Bay and your system quits, we prioritize same-day AC repair across both counties whenever our schedule allows. You will speak with a real, licensed (CA #501853) technician, not an answering service.

My older home has no ductwork — what are my air conditioning installation options?

Many homes in Mill Valley, San Anselmo, and downtown Petaluma were built without ducts, so we install ductless mini-split systems that cool room by room with no major demolition. We will assess your layout and recommend the cleanest, most efficient setup for the space.

How do I know whether I need AC repair or a full AC replacement?

As a rule of thumb, if your unit is over 12 to 15 years old and a repair costs a large share of a new system, replacement usually pays off in lower bills and reliability. We give you an honest, written comparison so you can decide — no pressure either way.

What size air conditioner is right for my Sonoma or Marin home?

It depends on your square footage, insulation, ductwork, and how much inland heat you face — a Santa Rosa home needs more cooling capacity than a fog-cooled Mill Valley one. We perform a proper load calculation so your new system is sized right, not oversized and short-cycling.

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.

Ready to Get Started?

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