Water Heater Installation – Tank & Tankless Systems for Every South Bay Home
Upgrading your water heater isn’t just about comfort—it’s about efficiency, performance, and peace of mind. At #1 Honest Plumber Inc., we provide professional, code-compliant water heater installation services to homeowners in Sunnyvale and throughout the South Bay. Whether you’re installing a standard tank water heater or making the switch to a high-efficiency tankless model, our team will help you make the right decision, install it properly, and ensure it works flawlessly for years to come.
Expert Installation of Tank Water Heaters
Conventional tank water heaters are the most common water heating systems in California homes. They work by storing a large volume of hot water in a tank, typically between 30–80 gallons, and keeping it at a set temperature.
We install gas and electric tank water heaters of all sizes, taking into account your household size, usage patterns, and budget. Our services include:
- Removal and haul-away of your old unit
- Installation of the new tank water heater (Rheem, AO Smith, Bradford White, etc.)
- Upgrade of supply lines, shut-off valves, and pressure relief valves as needed
- Installation of expansion tanks, drain pans, and earthquake straps
- Compliance with all state and local plumbing codes
Tank systems are ideal for families with predictable water use and homes with the space to accommodate them. We’ll ensure yours is installed with precision and care.
Our Services
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Tankless Water Heater Installation – Endless Hot Water, Ultimate Efficiency
Tankless (on-demand) water heaters heat water only when needed, providing unlimited hot water while using significantly less energy. These systems are compact, wall-mounted, and ideal for homeowners looking to reduce energy costs and save space.
Our tankless installation service includes:
- Sizing the right system based on household usage
- Mounting and securing the unit to the wall
- Installing high-efficiency venting systems (if gas-powered)
- Upgrading gas lines or electrical connections if required
- Installing isolation valves, filters, and pressure regulators
- Descaling flush ports to extend system life
- Walkthrough of system operation and maintenance
We install leading brands such as Navien, Rinnai, Noritz, and Bosch. Whether you’re retrofitting your home or building a new addition, we’ll help you determine if tankless is the right fit—and get it done right the first time.
Choosing the Right System: What to Consider
We help you evaluate:
- Household size and water demand
- Available space and plumbing infrastructure
- Energy usage goals
- Local rebate and incentive eligibility
- Budget and long-term ROI
We don’t upsell—we educate. Our job is to give you the truth about what fits your needs, not what earns us more.
300+ five-star reviews
Years of Experince
Why Choose Us
Why Choose #1 Honest Plumber Inc. for Water Heater Installation?
- Over 15 years of residential installation experience
- Owner-led service from start to finish
- Licensed, insured, and certified for gas and plumbing
- Clear, upfront estimates with no hidden costs
- Trusted by hundreds of homeowners in the South Bay
Serving Homes Across the South Bay
We install tank and tankless water heaters in:
Book Your Installation Today
Whether it’s time for an upgrade or your current unit has failed, call #1 Honest Plumber Inc. for fast, professional installation and service you can trust.
#1 Honest Plumber Inc. — Where integrity flows as strong as the water we repair.
