Tankless Water Heaters

Tankless Water Heater Repair & Installation in Petaluma, CA

Diamond Certified. 30+ Years of Experience. No Upselling.

At Roman's Plumbing, Inc., we’re a Diamond Certified plumbing company serving Petaluma and Sonoma County with over 30 years of hands-on experience. We install, repair, and maintain all types of tankless water heaters, and we bring the same honest, no-upsell approach to every job we take on.

Tankless water heaters heat water on demand rather than storing it in a tank, which eliminates standby heat loss and delivers continuous hot water when you need it. For Petaluma homeowners, that efficiency matters, and so does having a plumber who understands local permit requirements and the mineral content in our water supply. Petaluma’s water draws primarily from the Russian River system and is supplemented by local groundwater, and that mineral load accelerates sediment buildup inside water heating equipment faster than many homeowners expect.

Our tankless water heater services cover everything from selecting the right unit to long-term maintenance.

Call 707-971-0353 for professional tankless water heater services in Petaluma, CA.

What Our Tankless Water Heater Installation Covers

We start every installation with a thorough site assessment to determine the right unit for your household’s peak demand. Undersizing leaves your family waiting for hot water during busy mornings; oversizing inflates upfront cost without any benefit. Getting the sizing right before installation day is where good work begins.

We work with leading brands including Rinnai, Rheem, Navien, and Noritz, and every installation is sized and performed to manufacturer specifications and City of Petaluma code requirements. Pulling the required permits can help protect you during future resale inspections and helps ensure the work meets a verifiable standard. Gas tankless units require dedicated venting runs and sometimes a gas line upgrade to meet the unit’s flow rate requirements. We handle those details as part of the installation scope.

Our installation services include:

Site inspection and assessment
Selection of the appropriate unit
Removal of the old water heater (if necessary)
Proper venting and gas line installation
Electrical connection and grounding
Testing and commissioning of the system
Cleanup and disposal of debris

How We Diagnose & Repair Tankless Water Heaters

When a tankless unit acts up, the symptoms are usually hard to miss: no hot water, temperature that swings mid-shower, reduced flow, or error codes on the display. Modern tankless units communicate faults through error codes that point our plumbers directly to the source of the problem, shortening diagnosis time considerably.

Petaluma’s mineral-rich water is a common culprit behind reduced flow and heat exchanger inefficiency. Scale accumulates inside the heat exchanger over time, restricting water movement and forcing the unit to work harder. We use diagnostic tools and high-quality replacement parts to get your system operating safely and efficiently again.

Our repair services include:

Troubleshooting and Diagnosis
Leak Detection and Repair
Gas and Water Line Repair
Heating Element Replacement
Control Board Replacement
Pressure Relief Valve Replacement

Tankless Water Heater Services Rooted in Petaluma

Roman's Plumbing, Inc. was founded here, not in a regional office that treats Petaluma as a sub-market. Roman Scanagatta and our team are active in the community through organizations including Rebuilding Petaluma, the Petaluma Educational Foundation, Relay for Life, COTs, and Petaluma Little League. That connection isn’t a marketing point; it’s the reason we approach every job as a neighbor rather than a contractor.

We’re familiar with City of Petaluma regulations and ensure every installation and repair complies with local codes, which can reduce friction during inspections and help protect you down the road. Petaluma’s water conditions also inform how we advise on maintenance intervals. A plumber who knows the local water supply can give you realistic guidance on descaling frequency rather than a generic recommendation. Our community has recognized this approach with multiple People’s Choice awards in 2015, 2016, and 2020.

Honest Pricing, Fast Response, and No Surprises

Unexpected water heater problems bring real stress, and two of the biggest concerns homeowners have are cost surprises and long wait times. We prioritize quick response times and transparent pricing so you know what to expect before work begins. Our licensed plumbers serve Petaluma and the surrounding Sonoma County area, and our “one visit and you’re family” approach means you’ll get honest options fitted to your home and budget, not a push toward the most expensive solution.

Why Petaluma Homeowners Choose Roman's Plumbing, Inc.

At Roman's Plumbing, Inc., we hold ourselves to a standard you can verify. When you choose us for tankless water heater installation or repair, here’s what you get:

Diamond Certified quality: independently verified customer satisfaction and business practices
Honest and upfront pricing: no upselling products or services you don’t need
Licensed, insured, and bonded plumbers
PHCC apprenticeship-trained technicians: our team completes the four-year PHCC apprenticeship program
Quality workmanship and materials on every job
Personalized solutions tailored to your home and budget
PHCC membership and ongoing professional standards

Frequently Asked Questions

How Can I Tell If My Tankless Water Heater Needs Repair?

Watch for inconsistent water temperatures, strange noises from the unit, or a drop in water flow. Error codes on the display or a system that fails to ignite are also clear signals. Any of these warrant a call to a licensed plumber before the problem gets worse.

What Are the Benefits of a Tankless Water Heater over a Traditional Tank Model?

Tankless units heat water on demand rather than maintaining a full tank, which cuts standby energy loss and can lower utility bills. They deliver continuous hot water so you won’t run out during peak usage, and their compact footprint works well in homes with limited utility space.

How Often Should a Tankless Water Heater Be Serviced in Petaluma?

Most units benefit from annual maintenance, which typically includes descaling to clear mineral buildup from the heat exchanger. Petaluma’s water supply makes regular descaling especially important here. Staying current with maintenance can help extend the life of the unit and maintain efficiency. If you’re unsure when your unit was last serviced, call us and we’ll assess its condition.

Schedule Tankless Water Heater Service in Petaluma

Whether you need a new tankless unit installed or your existing system repaired, Roman's Plumbing, Inc. is ready to help. We serve Petaluma and Sonoma County with the same honest, family-first approach that has earned us community recognition year after year.

Call 707-971-0353 to schedule tankless water heater installation or repair with Roman's Plumbing, Inc..

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Why Our Customers Choose Us

Hear directly from the people we’ve proudly served in the communities we live in & love.

We take pride in building lasting relationships through trust and quality workmanship. Here, you can hear firsthand how our commitment to honesty and care has made a difference for families throughout Sonoma and Marin Counties.

"TOTALLY SATISFIED!!!"
Above and Beyond expectations. Highly recommend Roman's Plumbing.

- Dennis J.
"We cannot recommend them more highly."
They have been on time, priced well, always smiling, and super kind to our irritating but lovable dog.

- Mary S.
"I would definitely recommend them."
We have always found them to be reliable, trustworthy, and timely. Staff on site have been friendly, trustworthy, upfront with costs, and seem to make a very conscious effort to move quickly.

- Ashley F.
"Thank you all!!"
Very happy we now have a reliable, straightforward plumbing company for the future. Wish it was possible to give the team at Roman's Plumbing 10 stars.

- K. M.
"I recommend them without qualification."
...Consistently given us the highest quality service with the most complete and trustworthy communication imaginable.

- Herb F.
"We are thrilled with the outcome and the experience overall!"
The plumber that came for the initial visit was incredibly professional, friendly, and thorough. The estimates and options reflected our requests and were so helpful to us in prioritizing the items we wanted to move forward with.

- Christi H.
"Highly recommended, 10 stars!!!"
They were always on time, friendly, professional, respectful, and wore booties in the house. They were super fast and made sure they didn’t have to turn the water off for long. I couldn’t have been happier.

- Eva G.
"5 star all the way."
Jay showed up on schedule and on time and walked me through my options with good explanations, including a tankless system. I opted for his recommended system, signed the work order, and then had another positive experience dealing with Monica in their off

- Dan M.

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The Heart Behind Our Work

Dedicated to Serving Our Community with Respect and Reliability.

Plumbing with Purpose
We’re deeply rooted in the Sonoma and Marin communities. Whether it’s through our craft or our contributions, we’re committed to building a better future for the people and places we serve.
Built on Expertise
With over 30 years of hands-on experience and Diamond Certification, we bring unmatched skill, professionalism, and pride to every project—from simple fixes to major remodels.
Family-Focused Service
At Roman’s Plumbing, you’re not just a customer—you’re part of the family. We take a personalized approach to every job, ensuring honest guidance and respectful service every step of the way.
Integrity First, Always
We believe in doing what’s right—never upselling, never cutting corners. Our team treats your home and your budget with the same care we would our own.