Water Heaters in Redwood City, CA
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Water Heater Experts Serving Redwood City, CA
From the mid-century Eichler homes of Farm Hill and Centennial and the older cottages of Downtown Redwood City to the newer condos and townhomes downtown and the classic ranch homes of Mount Carmel, Redwood City properties each bring their own water heater challenges, from older gas lines to tight closet and garage installs. Fast Water Heater Co. has served Redwood City and San Mateo County homeowners since 1986, and we know the local codes and inspectors inside out.
We’re licensed, bonded, and insured. Every job is filed with the City of Redwood City Building Division for permit and inspection. Explore our full range of water heater types: tank, tankless, heat pump, and hybrid.
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Water Heater Installation in Redwood City, CA
Redwood City homes run the gamut, from older cottages in Stambaugh-Heller to mid-century Eichler and ranch homes and newer condos in Emerald Hills. We install top brands including Rheem, Bradford White, and Rinnai, with every job pulled under a City of Redwood City permit and inspected to code.
Premium Brands — In Stock
We carry Rheem, Bradford White, Navien, Noritz, and Rinnai. That ranges from standard 40 to 50 gallon tanks for Mount Carmel bungalows up to space-saving tankless units that fit the tight closets and garages common in Downtown Redwood City and Friendly Acres.
Redwood City Permit & Inspection
We file every job with Redwood City Building Division , required for any water heater replacement. Permitting protects your home value, insurance coverage, and a clean record at resale.
Whole-Home & Multi-Bath Systems
Larger Redwood City homes in Woodside Plaza, North Fair Oaks, and Emerald Hills, plus houses with a backyard ADU, often need a high-recovery tank or a properly sized tankless system. We size every unit to your home’s real peak hot water demand.
Same-Day Service Available
Call before noon for same-day installation in Redwood City. We arrive in clean, marked vehicles and protect your home with shoe covers, drop cloths, and full cleanup on every job.
Written Estimate — No Surprises
We provide a written quote covering parts, labor, permit fees, and old unit haul-away before work begins. If you decide not to proceed, there is no charge and no pressure.
Complete Haul-Away Included
We remove and properly dispose of your old water heater as part of every installation, with no extra trip and no additional charge. Your utility area is left clean.
Water Heater Code Requirements in Redwood City, CA
Redwood City Permit Required
The City of Redwood City runs its own permitting through its Building Division. Any water heater replacement requires a permit pulled with the Redwood City Building Division. We handle all paperwork and schedule the inspection for you.
Earthquake Strapping Required
California law requires two seismic straps on every water heater. They go on the upper and lower thirds of the tank, with the lower strap at least 4 inches above the gas controls. Because Redwood City sits in a seismically active part of the Bay Area near the San Andreas Fault, inspectors check this on every job.
Approved Location Rules
Water heaters cannot be installed in bedrooms, bathrooms, or sleeping-area closets per the California Plumbing Code. In Redwood City homes with converted garages, basements, or backyard ADUs, location compliance is checked closely.
Gas Venting Standards
Flue venting on gas water heaters must use listed materials, keep proper clearances, and stay free of obstructions. Aging vent pipes in older Redwood City homes, common in Stambaugh-Heller, Palm Park, and Centennial, are inspected and replaced when needed before installation.
T&P Relief & Drain Pan
A temperature and pressure relief valve is mandatory on all installations. Discharge piping must route to an approved outdoor location. Drain pans are required in any location where a leak could cause damage to the structure below.
Shutoff, Insulation & Bonding
A dedicated cold-water shutoff valve at the unit is required. Supply and delivery pipes in unconditioned spaces must be insulated. Gas and water piping must be electrically bonded per the California Building Standards Code.
Water Heater Replacement in Redwood City
Serving Redwood City Since 1986
We’ve completed thousands of water heater replacements throughout Redwood City, from Downtown Redwood City and Emerald Hills to Mount Carmel and Canyon. Our technicians know the local permit process, the local water supply, and the older housing stock inside and out.
Same-Day Replacement
If you’ve woken up to cold water, call before noon. We stock units on our trucks and can typically complete a full replacement, including permit, install, and haul-away, the same day.
Tankless Upgrades
Many Redwood City homeowners are switching to whole-home tankless systems for endless hot water, a smaller footprint, and longer service life. We handle gas-line sizing, venting, and full code compliance, including the tight garages common in older neighborhoods.
On-Site Written Estimate
We assess your existing setup and provide a written quote covering parts, labor, permit, and disposal before any work begins. No obligation if you choose not to proceed.
Rental & HOA-Friendly
We can coordinate access with your tenant, property manager, or HOA, which helps with the many duplexes, fourplexes, and condo buildings across Redwood City. We arrive on time, work efficiently, and leave your home exactly as we found it.
All Major Brands
Need a like-for-like Rheem swap, or want to step up to a Navien or Noritz tankless? We carry and install the right unit for your home’s hot water demand.
Water Heater Repair in Redwood City
No Hot Water?
Common causes are a failed thermocouple, pilot light outage, or heating element failure. Our technicians diagnose on the spot and carry standard repair parts on every service van.
Check Your Warranty
Most quality tank water heaters carry a 6–12 year warranty. We can help you locate and decode your serial number to determine if your unit is still covered, which can save you the cost of a replacement.
Repair vs. Replace
If your unit is over 10 years old and facing a significant repair, replacement is often the smarter investment. We give you an honest assessment, with no upselling.
Thermocouple & Thermistor Repair
A failed thermocouple (gas heaters) or thermistor (electric and tankless) is one of the most common repairs. These parts are inexpensive and stocked on our vans for fast turnaround.
Anode Rod Replacement
Water chemistry and normal use cause anode rod depletion over time. Replacing the rod every 3–5 years is the most cost-effective way to extend your tank’s life and prevent premature corrosion from the inside.
Annual Tank Flush
Hard water leaves calcium deposits at the bottom of your tank, reducing efficiency and shortening its life. An annual flush removes sediment buildup. It is a simple service that pays for itself in energy savings.
Redwood City Neighborhoods & Surrounding Areas We Serve
Neighborhoods We Serve in Redwood City
- Downtown Redwood City
- Emerald Hills
- Farm Hill
- Mount Carmel
- Centennial
- Friendly Acres
- Roosevelt
- Woodside Plaza
- San Carlos
- Redwood Shores
Nearby Cities We Serve
- San Carlos
- Belmont
- Palo Alto
- Atherton
- Woodside
- Foster City
- East Palo Alto
- San Mateo
- Menlo Park
Wider Service Area
- North Fair Oaks
- Palm Park
- Stambaugh-Heller
- Canyon
Redwood City Water Heater FAQs
Answers to the questions , homeowners ask us most.
Don’t see yours? Call us at the number above or request service online.
Do you offer same-day water heater service in Redwood City?
What permits are required for water heater replacement in Redwood City?
Do I need seismic strapping for my water heater in Redwood City?
What rebates are available for water heaters in Redwood City?
How does Redwood City water hardness affect water heaters?
Can you install a tankless water heater in older Redwood City homes?
Can you install large-capacity water heaters for Redwood City homes?
Do you handle gas, electric, and tankless water heaters in Redwood City?
Redwood City Water Heater Rebates & Incentives
PG&E Rebates (Gas Customers)
Redwood City receives natural gas service from PG&E. PG&E and local programs offer ENERGY STAR rebates on qualifying high-efficiency natural-gas tankless and storage water heaters. Visit pge.com for current amounts.
PG&E Rebates (Electric Customers)
Redwood City gets its electricity through PG&E, with generation from Peninsula Clean Energy (PCE). Rebates are available on qualifying heat pump water heaters. Visit svcleanenergy.org for current heat pump rebate programs.
TECH Clean California
Statewide incentives for heat pump water heaters, stackable with utility rebates. Eligible households can combine multiple programs for maximum savings. Check eligibility at techcleanca.com.
We Help You Maximize Savings
We help Redwood City homeowners identify and apply the right PCE, PG&E, and TECH Clean California rebates for their installation. Contact us before buying, since rebate amounts and eligible models change frequently.
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