Sunnyvale • Santa Clara County
Water Heater Services in Sunnyvale, CA
Installation, repair, and replacement of tank, tankless, and heat-pump water heaters across Sunnyvale — Licensed CSLB #1008381 • Sunnyvale OneStop Permit Center permits routine
Efficient Water Heaters covers every Sunnyvale neighborhood — Heritage District Eichlers with their famously tight mechanical closets, Cherry Chase 1950s ranches needing gas-line upsizing, Birdland tract homes due for 50-gallon tank replacement, and the dense rental stock along Murphy Avenue. CSLB-licensed, Sunnyvale OneStop Permit Center applications submitted routinely, and Navien-certified for the tankless conversions West-Sunnyvale homeowners ask about most.
Sunnyvale water heater services
Water Heater Installation
Tank, tankless, and heat-pump installs throughout Sunnyvale — permits pulled, CPC 507.2 compliant.
Learn more →Water Heater Repair
Same-day diagnosis and repair across Sunnyvale ZIPs 94085, 94086, 94087, 94089.
Learn more →Best Water Heater Company
How to choose a licensed, bonded, Sunnyvale-specialist water heater contractor.
Learn more →Serving every Sunnyvale neighborhood
Sunnyvale's Eichler stock (Heritage District, parts of Birdland) is unique — radiant floor heat, tight utility closets, and floor-mount water heaters that complicate tankless conversions. Cherry Chase and Ortega Park ranches (1950s) typically need gas-line upsizing for 199K BTU. Ponderosa and Lakewood Village townhomes need ambient-air heat-pump calculations. Commercial work serves Murphy Avenue restaurants, Moffett-area office utility rooms, and multi-family along El Camino.
Neighborhoods covered:
Heritage District • Sunnyvale West • Cherry Chase • Birdland • Ortega Park • Lakewood Village • Ponderosa • Murphy Avenue
ZIP codes:
94085 • 94086 • 94087 • 94089
Why Sunnyvale homeowners hire Efficient Water Heaters
- Licensed CSLB C-36 #1008381 (verifiable on cslb.ca.gov)
- Sunnyvale OneStop Permit Center permits pulled routinely
- Navien, Rinnai, Noritz, Bradford White, Rheem certified
- BAAQMD Rule 9-6 / 2027 zero-NOx compliance planning
- Owner Joseph Castro on-call — not a call center
- 4.8★ on 328+ Google reviews
Frequently asked questions
Need Hot Water Back Today?
Call or request a phone estimate. A San Jose water-heater specialist will review your situation and help you decide whether repair, replacement, tankless, or heat-pump service makes sense.
- Licensed CSLB #1008381
- Bonded & Insured
- Open 24/7
Navien Service Specialist · Rinnai PRO · Noritz Certified