ABOUT CALIFORNIA TANKLESS · TUSTIN CA
About California Tankless
A tankless-only water heater company serving Tustin and Orange County. We install, repair, and maintain Rinnai, Navien, Noritz, and Rheem systems — with a written quote and a city permit on every job.
We Only Do Tankless. That’s the Whole Point.
Most plumbing companies in Orange County list tankless water heaters somewhere between drain cleaning and toilet installs. We don’t do drains. We don’t do toilets. We install, repair, and maintain tankless water heaters in Tustin and the surrounding communities — and nothing else.
That focus matters because of where we work. Tustin’s water supply from MWDOC tests at 15 GPG — twice the US average — hard enough to strip the life out of an unserviced heat exchanger within three years. Old Town Tustin has 1920s galvanised pipes that need assessing before any gas work. Tustin Ranch homes built before 1995 have ½-inch gas lines that can’t run a tankless unit without an upgrade. These are Tustin-specific facts. We know them because this is the only thing we do, and we’ve been doing it in this city.
Every quote is written. Every permit is pulled. Every warranty is registered in your name. We answer the phone when you call at 6am with an error code — because we’ve built a business around being the people you call when there’s no hot water.
Our Focus
Tankless water heater installation, repair, and maintenance only. Not a general plumber with tankless on the service list. Every technician, every tool, every parts bin is specific to one product category.
Our Location
California Tankless
3002 Dow Ave
Tustin, CA 92780
Serving Tustin, Tustin Ranch, Old Town Tustin, Columbus Square, North Tustin, Villa Park, and surrounding Orange County communities.
Our Hours
Monday – Saturday: 7am – 7pm
Same-day service available in Tustin
Emergency shut-off guidance available by phone outside hours. Error code triage by phone free of charge.
Our Licence
California C-36 Licensed Plumbing Contractor
Authorised installer: Rinnai · Navien · Noritz · Rheem
Every installation includes a Tustin or OC Building Dept permit and a city inspector sign-off. We attend every inspection.
What We Stand For
We built this business around three frustrations Tustin homeowners told us they’d had with other contractors:
Call Us — Free Assessment, Written Quote
We assess your home on-site, give you a written quote, and let you decide. No commitment to call. No charge for the assessment.
📞 [PHONE NUMBER]Read Our Guarantee →Tustin Tankless Specialists
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