“Called this plumbing service after a long day at work and came home to no water pressure and no hot water with three teenage boys in need of a shower. Dino walked me through what might be wrong. After several questions he determined it was the water heater. By following his instructions I was able to easily fix the problem and it didn't cost me a penny. Such a nice guy and great service.”
Answering Now · 24/7 Emergency
Tankless Water Heater Installation in Orange County & S. Bay/LA
When choosing to upgrade their water heater, many customers turn away from conventional water heaters and look to the versatile, flexible options tankless water heaters provide. Whether you're looking to save space or save money, tankless water heaters offer an innovative solution to your hot-water needs.
24/7 Emergency Available
CSLB #834662
Tankless Water Heater Installation
Family-Run · OC, CA
Overview
Patriot Plumbing offers a wide range of makes and models of tankless water heaters to choose from, and we can send an experienced installation expert to your home today. We believe in providing top-quality plumbing services at competitive prices — free estimates on every install, with no surprises.
Why it matters
The benefits of routine tankless water heater installation.
The work compounds. Catching small issues early prevents the expensive call-out later — and keeps the rest of the system running cleanly.
Endless on-demand hot water
Smaller footprint than tank units — frees up garage or closet space
Lower energy use compared with always-heating tank systems
Longer service life than typical tank water heaters
Reduced risk of catastrophic flood from a tank failure
Top-Rated
Google · Yelp · Angie's List
CSLB #834662
Licensed · Bonded · Insured
30 Years Running
Angie's Super Service Award
BBB Accredited
Verified profile
Master Plumbers
IICRC-certified techs
Real customers
In their words.
“Have used Patriot for about 3 years now. They provide excellent service and respond very quickly. All my contact has been with Fred. He is knowledgeable and honest. I highly recommend Patriot.”
“This place is the best! Right on time and extremely knowledgeable and professional. I will never use another plumbing company! Great work!”
Common questions
Quick answers, before you call.
Still have a question? Reach our dispatch line 24/7 — a real person picks up.
Are tankless water heaters worth the upfront cost?
Over a 10–15 year horizon, tankless usually pays back in lower energy bills and a longer service life — plus you stop running out of hot water on long shower days.
How much hot water can a tankless system produce?
Output is rated in gallons per minute (GPM). We'll size the unit to your home's actual peak demand so you can run multiple fixtures simultaneously without losing temperature.
Does a tankless install require a gas-line upgrade?
Sometimes. Many tankless units need a larger gas line or a dedicated 120/240V line. We size and quote both as part of the project so there are no surprises.
How long does install take?
A straightforward swap is usually a same-day job. New installs that involve venting changes or gas-line upgrades can run 1–2 days.
What brands do you install?
We work across the major tankless brands and recommend the right fit based on your home's flow demand, fuel type, and venting layout.
Related services
Same crew. Other trades.
Ready when you are
Let’s tackle your tankless water heater installation
today.
Two regional dispatch lines, free quote, no pressure. Master Plumbers on every truck.