Efficient Water Heaters, Inc.

Santa Clara • Santa Clara County

Water Heater Services in Santa Clara, CA

Installation, repair, and replacement of tank, tankless, and heat-pump water heaters across Santa Clara — Licensed CSLB #1008381 • City of Santa Clara Building Division permits routine

Efficient Water Heaters covers all of Santa Clara — the 1920s Old Quad bungalows near Santa Clara University with half-inch gas mains, Rivermark townhomes needing shared-closet heat-pump installs, Lawrence Station commercial multi-family, and the dense rental stock around SCU. CSLB-licensed, City of Santa Clara Building Division permits pulled routinely, and Navien-certified for the tankless conversions Rivermark and Forest Park homeowners ask about most.

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Santa Clara water heater services

Water Heater Installation

Tank, tankless, and heat-pump installs throughout Santa Clara — permits pulled, CPC 507.2 compliant.

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Water Heater Repair

Same-day diagnosis and repair across Santa Clara ZIPs 95050, 95051, 95054.

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Best Water Heater Company

How to choose a licensed, bonded, Santa Clara-specialist water heater contractor.

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Serving every Santa Clara neighborhood

Santa Clara housing stock spans a century — Old Quad bungalows (1920s) almost always need gas-line upsizing for 199K BTU tankless; Forest Park ranches (1950s–60s) frequently need expansion tank retrofits; Rivermark townhomes (2000s) need ambient-air calculations for heat-pump conversions in shared mechanical closets. Commercial work spans Convention Center hotels, SCU rentals, and Lawrence Station retail.

Neighborhoods covered:

Old Quad • Rivermark • Lawrence Station • Forest Park • SCU area • Killarney Farms • Mission College area

ZIP codes:

95050 • 95051 • 95054

Why Santa Clara homeowners hire Efficient Water Heaters

  • Licensed CSLB C-36 #1008381 (verifiable on cslb.ca.gov)
  • City of Santa Clara Building Division 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

Most Santa Clara installs are scheduled within 24–48 hours. The City of Santa Clara Building Division permit is pulled by us; a like-for-like 40–50 gallon tank takes 3–4 hours including CPC 507.2 seismic strapping, expansion tank, T&P discharge, and inspection-ready vent and gas work. Tankless conversions in Old Quad bungalows add gas-line upsizing.

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.

Call (408) 470-0191 Get Phone Estimate
  • Licensed CSLB #1008381
  • Bonded & Insured
  • Open 24/7

Navien Service Specialist · Rinnai PRO · Noritz Certified