Mon–Fri 7:30AM – 5:30PM

Expert Tankless Water Heaters San Rafael, CA

Factory-trained plumbers for dependable tankless water heaters. Free estimates available. Call today to schedule same-day service!

Licensed & InsuredProfessionals
Quality WorkGuaranteed
Local ExpertsSince 1986
Fast & ReliableService

Our Services

  • Tankless Water Heater Installation
  • Tankless Water Heater Repair
  • Tankless Water Heater Replacement
  • Tankless Water Heater Maintenance
All San Rafael services

Our Reviews

★★★★★
4.8 out of 5
Based on 1,234 Google reviews
Read our reviews

Why Choose John Owens Services for Tankless Water Heaters San Rafael

We are the Rinnai tankless water heater experts. Making sure your on demand hot water heater is properly sized, supplied, vented, and connected is our guarantee when it comes to installation, repair, and maintenance work. After serving the San Rafael area for 40 years, we are committed to exceptional electric and gas tankless water heater service.

  • Trustworthy service from a San Rafael plumbing team serving local homes since 1986
  • Licensed California contractor #501853
  • Repair-first guidance before replacement is recommended
  • System sizing based on the home’s real hot water demand
  • Tankless maintenance, descaling, flushing, error-code diagnosis, replacement, and installation support
  • Local experience with older San Rafael homes, remodels, hillside access, and tight equipment locations

Signs Your Tankless Water Heater Need Service

  • The tankless unit displays an error code
  • Hot water temperature changes during use
  • Hot water flow is weaker than it used to be
  • The system struggles when several fixtures use hot water at once
  • The unit shuts down or needs frequent resets
  • You hear unusual noises from the water heater
  • Hot water takes longer to arrive or becomes inconsistent
  • The system has not been professionally flushed or maintained recently
  • You are adding a bathroom or fixtures that will increase hot water demand
  • Your existing water heater is aging and you are considering tankless replacement

Frequently Asked Questions

Can you install a tankless water heater in an Eichler home?

Absolutely! Tankless water heaters can be installed in Eichler homes, though installation requirements may vary depending on gas line access, electrical wiring, etc.

Can a tankless water heater be installed outside in San Rafael?

Yes! As long as the specific unit is designed to withstand outside conditions, gas or electric tankless water heaters can be installed outdoors.

Will I need a new gas line for a tankless water heater?

Because natural gas tankless water heaters use a significantly larger amount of gas, bigger gas lines are typically required.

How often should a San Rafael tankless water heater be flushed?

Tankless water heater systems should be flushed once a year to prevent mineral buildup.

Tankless vs heat pump water heater: which is better in San Rafael?

Heat pump and tankless water heaters offer different benefits and drawbacks depending on the specifics of your household and water heating needs. Our licensed plumbers can help you decide which option would suit your home best.

What size tankless water heater do I need?

The sizing of your tankless water heater should be determined by a professional who can accurately analyze the size of your home and your water heating requirements.

Why does my tankless water heater keep showing error codes?

Overheating, ignition failure, mineral buildup, and air flow restrictions are common reasons why error codes continue to appear on a tankless water heater. Contact a plumber to further inspect the issue and get an accurate diagnosis.

Why does my tankless water heater take so long to heat water?

Since a tankless installation heats water on demand, it should take a couple of minutes for hot water to start coming through, because there is no hot water stored in a tank ready to go. If it is taking longer than this, you may want a professional to inspect the system.

How do I know if my tankless water heater has mineral buildup?

Frequent error codes, reduced water pressure, strange sounds coming from the unit, and rapidly changing water temperatures all signs of mineral buildup.

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