Water Heater Repair & Installation
Reliable hot water—fast, safe, and code-compliant.
San Francisco Plumbing Company provides water heater repair, replacement, and new installations across San Francisco and nearby Peninsula cities. Clear diagnosis, straightforward options, and clean workmanship.
- Same-day availability when possible
- Upfront recommendations
- Respectful, tidy jobsite
Need hot water today?
Call +1 650-583-4522 or email info@sfplumbingcompany.com.
Based at 553 El Camino Real, South San Francisco, CA 94080.
Problems we fix
From sudden cold showers to slow leaks, we troubleshoot the cause and recommend the most cost-effective next step.
No hot water
Failed heating elements, thermostat issues, pilot/ignition problems, or gas supply concerns.
Leaks around the tank
We check fittings, valves, expansion tanks, and the unit itself to prevent water damage.
Rumbling or popping noises
Often caused by sediment buildup—maintenance or replacement may be the right solution.
Inconsistent temperature
Diagnosing mixing valves, thermostats, dip tubes, and flow/venting factors.
Low hot water pressure
We inspect shutoffs, supply lines, and scale buildup that can restrict flow.
Water too hot
Safety-first adjustments and repairs to reduce scald risk and protect the system.
Repair vs. replace: how we help you decide
We’ll explain what failed, what it takes to fix it, and when replacement is the smarter long-term move.
Repair is often best when…
The unit is in decent condition, the issue is isolated (thermostat/element/valve), and performance can be restored reliably.
Replacement may be better when…
There’s tank corrosion, repeated breakdowns, major leakage, or you want improved efficiency and capacity.
Efficiency & sizing guidance
We help match your household demand to the right size and type so you’re not paying for short cycling or running out of hot water.
Water heater types we service
We work on common residential systems. If you’re not sure what you have, we can identify it during the visit.
Tank water heaters
Repair and replacement for standard storage tanks, including temperature/pressure relief components and shutoff valves.
Best for: predictable demand, straightforward installs, budget-friendly replacement.
Tankless water heaters
Diagnostics for ignition, flow sensors, scaling, and venting-related performance issues.
Best for: space savings, continuous hot water, potential efficiency gains.
Note: Availability and model support can vary—call to confirm your unit.
Our installation process
A clear plan, clean execution, and a system you can trust.
1) Assessment
We review your current setup, capacity needs, venting, and safety components.
2) Quote & options
You get practical choices with a clear explanation of what’s included.
3) Installation
Professional hookup, testing, and verification of proper operation.
4) Cleanup & haul-away (when available)
We leave the area tidy and can discuss removal of the old unit if needed.
Water heater FAQ
Quick answers—call if you want help choosing the right next step.
How long does a water heater usually last?
Many tank units last around 8–12 years, while tankless units can last longer with proper maintenance. Actual lifespan depends on water quality, usage, and upkeep.
Do I need a permit for replacement in San Francisco?
Permits and inspections may be required depending on the scope and local requirements. We’ll walk you through what applies to your installation.
What maintenance helps prevent breakdowns?
Flushing sediment (as appropriate), checking the anode rod, testing safety valves, and keeping the area around the unit clear can help. For tankless systems, descaling is often important.
Can you help if my water heater is leaking?
Yes. If the tank itself is leaking, replacement is often necessary. If it’s a fitting or valve, a repair may be possible. If there’s active flooding, shut off the water supply and call us right away.
Get your hot water back—schedule service today
Call for fast troubleshooting or request an appointment online. We serve San Francisco and surrounding areas from our South San Francisco location.
Address
553 El Camino Real, South San Francisco, CA 94080