Get a free
tankless estimate
Tell John Castro Plumbing what you have now and what you're considering. A tankless specialist will follow up — or call now for immediate help.
Serving All Southern California · Free estimate
- 40+ Years Experience
- Licensed & Insured
- Lic #448031
- Trusted Rinnai Tankless Specialist
Talk to a tankless specialist
Call for a free estimate or send your details online. We’ll help you find the right tankless solution for your home.
Call
855-355-7766
Call (alternate)
818-355-7766
Service area
Serving All Southern California
License
Lic #448031
Website
www.RinnaiGuy.com
[VERIFY WITH BUSINESS OWNER — email address, business hours, and preferred primary number to be confirmed]
Why request an estimate
- 40+ Years Experience
- Licensed & Insured
- Lic #448031
- Trusted Rinnai Tankless Specialist
- Serving All Southern California
- Free Estimate
What to have ready
A few details help us give you straight answers faster. You don’t need to open equipment or remove any panels — just describe what you see.
- What type of water heater you currently have
- Brand, if known
- Model, if known
- What problem you are experiencing or what you're considering
- Your ZIP code
- A photo of your current setup, once upload is enabled
Serving Southern California
Include your ZIP code so availability can be confirmed. We don’t publish a fabricated address or office map — coverage is confirmed per request.
Interested in a Rinnai tankless system?
Select “Rinnai Tankless Water Heater” on the estimate form and we’ll discuss Rinnai as an option for your home. We’re a trusted rinnai tankless specialist — not an authorized dealer or certified installer unless independently verified.
Explore Rinnai Tankless Water Heaters
Ask about available California gas rebates
Current programs and eligibility can change. Select “Rebate Information” on the estimate form and we’ll review what may apply to your situation — without promising an incentive we can’t verify.
Let’s talk about your tankless upgrade
Call now or send your details. 40+ Years Experience. Licensed & insured. Serving All Southern California.