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Boiler & Radiant Heating Services in San Anselmo, CA

Expert boiler repair, installation, and radiant heating for San Anselmo homes — from Ross Valley bungalows to the Sleepy Hollow hills.

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Local ExpertsSince 1986
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San Anselmo's older Ross Valley homes — the 1920s Craftsman bungalows near The Hub, the mid-century houses climbing into Sleepy Hollow and Sais Acres — were often built around hydronic heat, and many still run on aging boilers that struggle through damp, fog-chilled winter mornings. When a circulator quits, a zone goes cold, or pressure keeps dropping on a hillside system, you want a crew that already knows how these radiant setups behave. John Owens Services has kept Marin homes warm since 1986, with same-day boiler repair and a fully licensed team (CA #501853) that diagnoses it right the first time.

Why San Anselmo Homeowners Choose John Owens

  • Decades of hands-on hydronic experience in San Anselmo and across Ross Valley — radiant floors, cast-iron and panel radiators, condensing boilers, and multi-zone hillside systems in Sleepy Hollow, Yolanda, and Seminary
  • Trucks stocked daily with circulators, zone valves, expansion tanks, aquastats, and boiler controls, so most San Anselmo boiler repairs are finished in a single visit
  • Familiar with the quirks of older Ross Valley housing stock — undersized expansion tanks, air-locked loops, and tired cast-iron boilers that lose efficiency every season
  • Same-day service for no-heat calls during cold, foggy Marin cold snaps, when a dead boiler means a cold house fast
  • Licensed (CA #501853), insured, and backed by a 4.9-star Google rating and happy customers from homeowners across Marin County
  • Honest, written estimates and correct boiler sizing for radiant and low-temperature systems — no upselling, no guesswork

Signs You Need Boiler & Radiant Heating in San Anselmo

  • Cold spots or uneven warmth across radiant floors, or a single heating zone that never gets warm while the rest of the house does
  • Your boiler pressure gauge keeps dropping, or you're constantly re-filling the system to keep heat running
  • Banging, gurgling, or knocking from pipes and radiators — usually trapped air or circulation trouble
  • Rising gas bills from an aging cast-iron boiler that's lost efficiency, a common story in San Anselmo's pre-1950 homes
  • No heat at all on a cold morning, water pooling near the boiler, or a pilot/ignition that won't stay lit

Frequently Asked Questions

How fast can you get to a boiler repair in San Anselmo?

We offer same-day boiler repair across San Anselmo and Ross Valley whenever possible, and our trucks carry the common circulators, valves, and controls to finish most repairs in one visit. As a fully licensed contractor (CA #501853), we restore heat safely and correctly.

Is radiant heating a good fit for older San Anselmo homes?

Yes — radiant heating delivers the quiet, even, draft-free warmth that suits San Anselmo's older bungalows and hillside homes, and it pairs beautifully with the damp, cool Ross Valley climate. We service existing radiant floors and radiators and design new low-temperature systems.

What does a boiler installation in San Anselmo involve?

We start with accurate load sizing for your radiant or radiator system, give you a clear written estimate, and install a right-sized high-efficiency or condensing boiler — often replacing an aging cast-iron unit. Every boiler installation is performed by our licensed team (CA #501853).

How often should a San Anselmo boiler be serviced?

Once a year, ideally before the foggy fall and winter set in. Annual maintenance — flushing, combustion testing, and a safety check — keeps your radiant heating efficient and catches small issues before they become a cold-morning emergency.

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