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San Francisco Plumbing Services

San Francisco Plumbing & Heating Services

Expert plumbing, radiant heating, and boiler services throughout San Francisco. We understand the city's unique challenges: high water pressure, tight Victorian layouts and strict building codes.

What Makes SF Plumbing Unique

The Pressure Problem

San Francisco's hilly terrain forces the city to pump water at extreme pressures to reach upper elevations. Gravity compounds this — homes at the bottom of a hill can see pressures double what homes at the top experience. City infrastructure work can spike your pressure overnight without any notice to residents.

  • Pushes fixtures to their limit, wearing out gaskets and seals years faster than normal
  • Damages appliances with strict pressure limits like water filters and dishwashers
  • Causes slow leaks inside walls that lead to mold and structural damage
  • Shortens the overall lifespan of your entire plumbing system

Safe pressure: 65 PSI · Max safe: 80 PSI · What we often see in SF: 130-140 PSI

Constant Infrastructure Work

San Francisco is perpetually under construction. The city's aging water mains, sewer lines, and electrical conduits are being replaced neighborhood by neighborhood — and this ongoing work directly impacts your home's plumbing without any warning.

  • Water main replacements cause sudden pressure spikes or drops with zero advance notice
  • Sewer line work shifts soil around your lateral connection, creating new cracks
  • Street construction vibrations loosen old pipe fittings, especially in pre-war buildings
  • Temporary water shutoffs introduce sediment into your lines, clogging aerators and damaging water heaters

If your street has been dug up recently, have your pressure and connections inspected

Space Constraints

Victorian row houses, multi-unit flats, and compact Sunset District homes all have tight mechanical rooms, cramped crawl spaces, and pipe runs woven through century-old wall framing. Most plumbers aren't equipped to handle these layouts.

  • Standard 40-gallon tank water heaters may not fit your utility closet — wall-mounted tankless units will
  • Boiler installations in basements with 6-foot ceilings need specialized venting and compact equipment
  • ADU conversions in the Sunset and Richmond need radiant floor heating — no room for ductwork

Combi-boilers handle both heating and hot water in a single compact unit

Serving All San Francisco Neighborhoods

We know the city, the building types, and the unique challenges of each area.

Marina District
Russian Hill
Pacific Heights
Noe Valley
Mission District
Castro
SOMA
Haight-Ashbury
Potrero Hill
...and all others

Complete Services in San Francisco

System Evaluation & Testing

Water pressure testing (on every call)
Check valve inspection
Thermal expansion evaluation
Visual system inspection
Sewer lateral camera inspection

Plumbing Tips for San Francisco Homeowners

Quick advice from 20+ years working in SF homes.

Check Your Pressure Annually

City infrastructure work can spike your home's water pressure without warning. A quick gauge test catches problems before they cause damage.

Ask About Thermal Expansion

If your home has a check valve, heated water has nowhere to expand. An expansion tank prevents stress on your pipes and fixtures.

Know Your Permit Requirements

SF requires permits for water heater replacements, seismic strapping, and earthquake shutoff valves. We handle the paperwork.

Consider Going Tankless

Tankless water heaters and combi-boilers free up valuable floor space — ideal for SF's compact utility closets.

Be Careful With Old Pipes

Victorian and pre-war plumbing is fragile. Aggressive repairs on cast iron or galvanized lines can create bigger problems downstream.

Plan ADU Plumbing Early

If you're converting a garage or building an in-law unit, design the plumbing and heating before framing — radiant floors are easiest during initial construction. We also specialize in Eichler home plumbing.

Common SF Plumbing Questions

Need a Plumber in San Francisco?

We'll test your water pressure, assess your plumbing needs, and provide clear, practical solutions. Contact us today for a free estimate.

Serving All San Francisco Neighborhoods • Licensed & Insured • 20+ Years Experience