Mon–Fri 7:30AM – 5:30PM

Heat Pump and Ductless Mini Split Installation and Repair in Marin & Sonoma County

Heat pump repair, installation and replacement for Marin and Sonoma County homes, ducted or ductless.

Licensed & InsuredProfessionals
Quality WorkGuaranteed
Local ExpertsSince 1986
Fast & ReliableService

Heat pump repair and installation in Marin and Sonoma County, from one team that does both. If your heat pump is short cycling, blowing lukewarm air, icing up or running constantly, we diagnose airflow, controls, electrical issues and refrigerant-side symptoms before recommending a repair or a replacement.

When it is time for a new system, we start with a Manual-J load calculation so the equipment matches your actual house. Many local homes were built for a gas furnace and never had central air, so a ducted heat pump, a ductless mini-split or a mix of both can handle heating and cooling together. Ductless works well in houses with floor furnaces, radiant heat or no ducts, and in ADUs and converted attics. Our in-house rebate department helps with qualifying utility rebate applications.

Our San Rafael office serves Marin towns such as Mill Valley and Tiburon. Our Santa Rosa and Petaluma offices serve Sonoma County, including Santa Rosa, Petaluma and Rohnert Park. We have been family-owned since 1986.

What You Get From One Licensed Team

Diagnosis, installation and service stay with one company, California license #501853.

  • A multi-trade license covers the HVAC, electrical and plumbing-side work on an install.
  • Real Manual-J load sizing, so the system is matched to your home.
  • Ducted, ductless and hybrid options compared for your house, with a look at your existing ductwork.
  • Guidance on rebates and on how electrification may affect your utility bill, before you commit.
  • Appointment windows confirmed by our office, and same-day service available.

Signs Your Heat Pump Needs Attention

  • Air from the vents is lukewarm in heating or cooling mode
  • The system cycles on and off too often, or never seems to stop
  • Ice builds up on the outdoor unit
  • New noises from the indoor or outdoor unit
  • A utility bill that jumps with no change in how you use the house
  • One room never matches the thermostat setting
  • An aging furnace or air conditioner you would like to replace with one system that does both

Frequently Asked Questions

How do I schedule heat pump repair?

Request service online or call during office hours, Monday through Friday from 7:30am to 5:30pm. Our office will confirm availability and your appointment window. Tell us what the heat pump is doing, such as short cycling or icing, so the right technician comes prepared.

Why is my heat pump short cycling?

Possible causes include restricted airflow from dirty filters or blocked returns, thermostat or control problems, and electrical issues. Because the cause varies, we diagnose the whole system rather than guess. Switching the system off and calling us is better than letting it keep cycling.

Do you do heat pump installation in Santa Rosa?

Yes. Our Santa Rosa office serves Santa Rosa, and our Petaluma office also covers Sonoma County. We start with a load calculation and a look at your ductwork and electrical setup, then compare ducted, ductless and hybrid options for your house.

Can a heat pump replace my furnace and air conditioner?

In many homes, yes. The right answer depends on the house, your comfort goals, the ductwork and the electrical setup. We review each of those and explain what a replacement would involve, including ducted, ductless and hybrid options, before you decide anything.

Is a ductless mini-split a good fit for an older home or ADU?

Often yes. Ductless mini-splits suit older Marin and Sonoma homes with floor furnaces, radiant heat or no ducts, and they add efficient room-by-room comfort to additions and ADUs without major remodeling. We check the layout and electrical setup before recommending zones.

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