CONTACT CALIFORNIA TANKLESS · TUSTIN CA
Contact Us — Free Written Quote
Call for a free on-site assessment and written quote. No commitment. We answer the phone.
Get in Touch
📞 [PHONE NUMBER]
Call or text. We answer Mon–Sat 7am–7pm.
Same-day service available in Tustin 92780 · 92782 · 92705.
Error code triage by phone — free, no commitment.
📍 Our Address
California Tankless
3002 Dow Ave
Tustin, CA 92780
Service territory: Tustin · Tustin Ranch · Old Town Tustin · Columbus Square · North Tustin · Villa Park · Orange · Irvine · Anaheim · Yorba Linda · Santa Ana
🕐 Hours
Monday – Saturday: 7am – 7pm
Sunday: Closed
Same-day service available for Tustin area emergencies during business hours. We aim to pick up within 2 rings — no answering machine during business hours.
What to Expect When You Call
We don’t use scripts or sales funnels. When you call, a real person who knows tankless systems answers. Here’s how the call typically goes:
1. Tell us what’s happening
Error code, no hot water, planning a new installation, or want an annual service. We ask a few questions about your home and the unit.
2. We give you an honest range on the phone
We won’t give a fixed price without seeing the home — gas line size and venting route both affect cost. But we can give you a realistic range for your situation immediately.
3. We schedule an on-site visit
For installations: a free on-site assessment where we measure the gas line, plan the venting route, and provide a written itemised quote. For repairs: same-day if available, next morning if not.
4. Written quote before any work begins
Every job gets a written quote. You approve it before we touch anything. The price on the quote is the price on the invoice.
Common Reasons People Call Us
Error Code Showing
Tell us the code and brand. We’ll tell you on the phone what it likely means and whether we need to come out. Rinnai Code 12 and Navien E003 are the most common calls we get from Tustin.
No Hot Water
If you’ve lost hot water completely, call now. We carry the most common repair parts for all four brands on every vehicle. Same-day in Tustin 92780 · 92782 · 92705.
Planning a New Installation
Want to switch from a storage tank or replace an aging tankless? Call for a free on-site assessment and written quote — no commitment to proceed. We assess the gas line, size the unit for your home, plan the venting, and put everything in writing.
Annual Descaling Overdue
In Tustin’s 15 GPG water, annual descaling is the maintenance interval that keeps units running efficiently. If your unit hasn’t been serviced in over 12 months, call us.
Gas Smell or Water Leak
Gas smell: leave the building, call SoCalGas (1-800-427-2200), then call us from outside. Water leak from the unit: close the cold water inlet valve, then call us.
Getting a Second Opinion
Got a quote you want a second view on? Call us. We’re happy to review another contractor’s quote and tell you honestly whether it’s fair, whether anything’s missing, and what we’d recommend.
Call Now — We Answer
No answering machine during business hours. Real person, real knowledge, straight answer.
📞 [PHONE NUMBER]Our Location — Tustin CA
3002 Dow Ave, Tustin, CA 92780 · Mon–Sat 7am–7pm · Get Directions →