Endless hot water, lower energy bills, and a compact system that fits your home — installed by a Rinnai Authorized Dealer.
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Fast, code-compliant installation from a Rinnai Authorized Dealer you can trust.
Sequoia Plumbing & Mechanical provides expert tankless water heater installation throughout the San Francisco Bay Area. Whether you’re searching for a straightforward tankless heater installation or a full tankless water heater install to replace an aging tank system, our licensed technicians handle every step — evaluating your home’s hot-water demand, confirming gas line and venting requirements, and completing a clean, code-compliant tankless water installation.
We install both gas and electric systems and manage every part of the process, from sizing the right unit to final testing, so your new tankless hot water installation performs reliably from day one. Explore our full range of water heater services or continue reading to see if a tankless system is right for your home.
Many Bay Area homes, especially older properties, were built with tank water heaters and standard venting that wasn’t designed for tankless systems. Upgrading often requires larger gas lines, updated venting, or in some cases an electrical upgrade for the recirculation pump — all of which we evaluate before installation begins.
Space is also a common concern in older homes with smaller utility closets; tankless units solve this by mounting on a wall instead of taking up floor space. Because Bay Area homes vary widely in age and layout, we assess each property individually rather than applying a one-size-fits-all installation plan. If a tankless system isn’t the right fit, we can also walk you through heat pump water heater options.
Every tankless water heater installation starts with an on-site evaluation of your home’s hot-water demand, existing gas and venting setup, and available space. From there, we walk you through your options — whether that’s a direct tankless heater installation, a water tankless heater installation replacing an old unit, or an upgrade from a previous tankless system. We handle permitting and code compliance, install the unit to manufacturer specifications, and fully test the system before we leave, so you can count on consistent hot water from the very first use.
New tankless water heater installations from Sequoia Plumbing & Mechanical include the full manufacturer warranty — up to 15 years on the heat exchanger and 5 years on parts for qualifying models — plus our 1-year labor and workmanship warranty, extendable to 5 years with registration within 90 days of installation. Every tankless water heater install we complete is backed by workmanship you can trust.
We install tankless water heaters for homeowners throughout San Mateo, Redwood City, Palo Alto, Menlo Park, Burlingame, Foster City, San Carlos, Belmont, and surrounding Bay Area communities. Many older homes in the area need updated gas lines or venting to support a tankless system — our technicians are experienced with the retrofit requirements common in Bay Area properties.
Don’t wait for your aging water heater to fail. Contact Sequoia Plumbing & Mechanical for professional tankless water heater installation in the San Francisco Bay Area. Our licensed technicians make the switch to a high-efficiency tankless system simple — from your first estimate to final testing.
Whether you’re upgrading an old tank, replacing a previous tankless unit, or installing hot water in a new space, we’ll help you choose the right system for your home and budget. Call (650) 880-6339 or book your tankless heater installation online today.
Tankless water heater installation isn't a simple swap — it requires the right gas line, venting, and setup to perform properly. Here's what our licensed technicians make sure gets done right, so you don't run into problems down the road.
Our simple process ensures fast service, clear communication, and reliable results from start to finish.
Schedule your service online or by phone.
We assess the issue and identify the best solution.
Quality work, completed quickly.
We test everything to ensure reliable performance.
Trusted, licensed plumbers delivering high-efficiency tankless water heater installations built to last.
Certified installation and service for Rinnai's high-efficiency tankless systems.
Qualified technicians for gas, venting, and code compliance.
Up to 15 years manufacturer warranty, plus our workmanship guarantee.
Know the cost before installation begins.
Proudly serving homes and businesses throughout the San Francisco Bay Area, including the communities below and surrounding areas.
San FranciscoSan MateoRedwood CityMountain ViewPalo AltoSan BrunoFoster CityBurlingameSan CarlosLos AltosMenlo ParkBelmontAthertonMillbraeOaklandBerkeleyEl CerritoLafayetteOrindaNapaSan RafaelNovatoMill ValleyLarkspurSonomaCorte MaderaSee what Bay Area homeowners and businesses say about working with Sequoia Plumbing & Mechanical.
San Francisco, CA
Jessica M.
Couldn't be happier with our new radiant heating system. The installation was clean, completed on schedule, and the technicians answered all of our questions. Highly recommend this company if you're looking for quality workmanship.
San Mateo, CA
David R.
Our tankless water heater suddenly stopped producing hot water, and they came out the same day. The technician diagnosed the issue quickly, made the repair, and had everything working again in no time. Excellent service!
Sebastopol, CA
Amanda K.
We finally had a water softener installed, and the difference is amazing. Our water feels so much softer, and we've already noticed less buildup on our fixtures. The installation was quick and professional.
Often yes, though venting and gas line requirements differ between tank and tankless systems. We evaluate your setup and let you know exactly what's needed before installation begins.
Cost depends on your home's existing setup (gas line, venting, electrical), the unit you choose, and whether it's a straight swap or a new tankless water installation. We provide a free estimate after evaluating your property.
A straightforward tankless heater installation typically takes one day. Installations requiring new gas lines, venting, or electrical work may take longer.
Not necessarily — many tankless models offer a built-in smart recirculation pump, so no separate pump is required for near-instant hot water.
For many Bay Area homeowners, yes — lower energy bills, a longer equipment lifespan, and endless hot water often offset the higher upfront cost of a tankless water heater install over time.
