Plumbing service
Professional Water Heater (Tank & Tankless) Installation Services
What is water heater installation (tank & tankless) and when do you need it?
Water heater installation splits into two choices — a conventional tank or a tankless unit — and Avanté Plumbing installs both across Sonoma and Marin County. A tank heats and stores a fixed volume, costs less up front, and is the straightforward swap when you are replacing like for like. A tankless unit heats on demand, takes up far less wall space, and does not run out during back-to-back showers, but it usually needs gas line, venting and sometimes electrical work to support it, which makes it a bigger job on a house that has never had one. Hard water in much of Sonoma County means a tankless unit needs periodic descaling to protect the heat exchanger. We will tell you honestly which suits your household and your existing plumbing before quoting. Karl D'Angelo holds California CSLB licence #841938 (C-36 Plumbing), held since 2004.
Why should I choose Avante Plumbing for my water heater installation?
At Avante Plumbing, we prioritize quality service at a reasonable price. Our professional plumbers are licensed, insured, and have vetted experience. They work promptly and effectively, ensuring your complete satisfaction.
What types of water heaters do you install?
We install both tank and tankless water heaters. Each one offers unique benefits, and our expert team can help you decide which is the best fit for your home.
How long does the installation process take?
Most installations can be completed within a few hours. However, the exact time may vary depending on the complexity of your setup. Our team always works to get your hot water flowing as quickly as possible.
Last updated: August 2026 · Written by Karl D'Angelo, CSLB #841938 (C-36 Plumbing), plumbing in Sonoma & Marin since 2004.
Traditional tank water heaters remain a popular choice for many homes. These systems heat water and store it in a reservoir tank, ensuring a steady supply whenever you need it. They are cost-effective and efficient for larger households that use multiple hot water outlets simultaneously.
Tired of running out of hot water? Our tankless water heaters offer a continuous flow of hot water, heating it directly as it passes through the unit. These systems save space, reduce energy consumption, and are perfect for those looking to modernize their home’s energy efficiency.
Expert Technicians: Our team consists of professionally trained, licensed, and insured plumbers. They bring years of experience in handling a wide variety of water heating systems to your home.
Quality Work Guaranteed: We stand by our work with strong quality guarantees. Every installation is handled with precision and an eye for detail to ensure optimal performance.
Customer-Centric Approach: Your satisfaction is our number one priority. We offer transparent pricing with no hidden fees, and our team is always ready to answer any questions you may have.
Our process begins with a consultation where we assess your hot water needs and decide on the best type of system for your home. We then plan the installation, prepare the site, and handle the installation work efficiently, minimizing any disruption to your home life.
Are you ready to enjoy unlimited hot water? Please reach out to us today at (707) 231-0790, or visit us at 1677 Centurion Dr, Santa Rosa, CA 95403 for more information. Our dedicated team at Avante Plumbing looks forward to assisting you.
We start with a thorough consultation at your home, where our expert evaluates your current set up and recommends the best tank or tankless water heater options that suit your needs and budget.
After approval, we tailor a fitting plan for your new water heater installation. Our team discusses necessary steps, provides a timeline, and ensures you understand each part of the process.
Common questions
Water Heater Installation (Tank & Tankless) FAQs
Will I have uninterrupted access to hot water during installation?
There will be a short period you'll be without hot water during the switch-over. We're efficient and aim to keep this disruption as brief as possible.
Do you offer warranties on the water heaters?
Yes, both our products and our installations come with warranties, giving you peace of mind knowing that your investment is protected.
How can I schedule an installation with Avante Plumbing?
It’s easy! Just give us a call at (707) 231-0790, and our friendly staff will help you set up an appointment at a time that works best for you.
Is a tankless water heater worth it compared to a tank?
It depends on how the house uses hot water and what the install needs. Tankless units are documented as lasting roughly twice as long as tank heaters and only heat water on demand, but a conversion often needs a larger gas line, new venting and condensate drainage, which is where the cost difference sits. A like-for-like tank swap in the same location on the same fuel is always the cheapest scenario.
What has to change in the house to fit a tankless unit?
Usually the gas supply and the venting. A gas tankless unit draws far more input than a tank while it runs, so the existing gas line is often undersized, and it needs its own dedicated venting rather than sharing a flue. Electric tankless units instead need substantial new circuit capacity and sometimes panel work. Condensate drainage and freeze protection also come into it on exterior installs.
Do you need a permit for a tankless conversion?
Yes, and more of one than a straight swap, because the gas piping and venting are being altered rather than reused. In unincorporated Sonoma County the permit goes through Permit Sonoma, whose published schedule lists a $327 minimum trade permit fee plus small per-unit charges — $20.75 for a water heater and vent, $8.26 per water piping unit, $8.26 for a gas piping system serving one to four outlets. Incorporated cities such as Santa Rosa, Windsor and Healdsburg run their own building departments, and the Marin towns each run theirs. Those are agency fees, not our charges.
Trusted locally
What customers say
“Karl was very helpful in explaining what needed to be done, and then did what needed to be done with our gas line very well. He was very punctual and gave us a good rate for the job. Thank you Karl!”
“knowledgeable, experienced, friendly and fast.”
“Karl came in and was polite, professional, and did a fantastic job.”
Rated 4.9 stars across 32 Google reviews — read all 32 reviews or see photographs of 21 completed jobs.
Water Heater Installation (Tank & Tankless) near you
Sonoma & Marin County
Need water heater installation (tank & tankless)?
Call (707) 231-0790 or send a note — we'll get back to you fast with a straight answer.
Licensed, bonded & insured · CSLB #841938 · Mon – Sun, 7:00 AM – 7:00 PM