Mon–Fri 7:30AM – 5:30PM

Water Heater Repair, Installation & Tankless | Marin & Sonoma

Tankless water heater installation, repair, and tank replacement across Marin & Sonoma County — same-day service from a licensed local team.

Licensed & InsuredProfessionals
Quality WorkGuaranteed
Local ExpertsSince 1986
Fast & ReliableService

From the 1920s Victorians of San Rafael to the mid-century ranches of Santa Rosa and the rural propane homes out toward West Marin, North Bay houses run hard on their water heaters — and our mineral-heavy local supply scales up tanks and tankless coils faster than most homeowners expect. John Owens Services has installed, flushed, and repaired water heaters across Marin and Sonoma County since 1986, sizing each tankless unit to your home’s real winter inlet temperatures and gas line so you actually get the endless hot water you paid for. When a tank fails or a tankless unit throws an error code, we answer the phone and most days we’re there the same day.

Why Homeowners Choose John Owens

  • Family-run and locally rooted since 1986 — we know North Bay housing stock, from tight Petaluma Victorians to Novato slab homes, and we size every system to the house, not a generic chart
  • Licensed, bonded, and insured California contractor (CSLB #501853) — your install is permitted and code-compliant, which protects resale and insurance
  • a 4.9-star Google rating and same-day service: most repairs are completed in a single visit
  • Rinnai authorized dealer — we install, warranty, and service tankless units we actually stand behind, not whatever's on the truck
  • We descale and flush tankless units on a maintenance schedule built for our hard local water, so your unit hits its 20-year lifespan instead of dying at 8
  • Straight pricing with veteran and senior discounts, plus help capturing available gas-to-electric and efficiency rebates in California

Signs You Need Water Heater Repair & Installation in

  • No hot water, lukewarm showers, or water that runs hot then cold — a classic sign of a failing tank or an under-sized or scaled tankless unit
  • Rust-colored water, popping or rumbling from the tank, or a unit older than 10-12 years (most North Bay tanks don't make it much past that on our hard water)
  • Water pooling around the base of the heater or dampness in the garage or closet — a leaking tank rarely gets better and can flood fast
  • A tankless unit flashing an error code, short-cycling, or struggling to keep up with two fixtures at once during cold winter mornings
  • Rising gas bills, or you're remodeling or adding a bathroom and need more hot water capacity than your current tank can deliver

Frequently Asked Questions

Is a tankless water heater worth it for a Marin or Sonoma County home?

For most North Bay homes, yes — a tankless water heater delivers endless hot water, frees up garage or closet space, and can last 20+ years, especially with regular descaling for our hard local water. We’ll assess your gas line, venting, and demand before recommending one, since an older home may need an upgrade to support it.

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

Yes. We provide same-day water heater repair across Santa Rosa, Petaluma, San Rafael, Novato, and the surrounding North Bay, and most repairs are completed in a single visit. Call our local lines and we’ll get a licensed tech (CSLB #501853) out fast.

How much does water heater installation cost, and are there rebates?

Cost depends on whether you choose a tank or tankless unit and what your home’s gas, venting, and electrical need — we give a clear quote up front. We also help homeowners capture available California efficiency and gas-to-electric rebates, plus we offer veteran and senior discounts on installs.

Why does my tankless water heater keep losing hot water in winter?

Cold incoming water in the North Bay winter lowers a tankless unit’s effective flow rate, so an under-sized or scaled-up unit can’t keep up with two fixtures at once. We descale the heat exchanger and confirm the unit is properly sized for your home — often the real fix is correct sizing, not replacement.

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