Boiler Services in San Francisco

High Pressure Is Always the First Problem

SF’s water pressure frequently exceeds 130 PSI — nearly double the 80 PSI maximum safe limit. Every boiler we install or service in SF starts with a water pressure test. Installing new equipment without managing this pressure means premature failure in 3–5 years instead of 15–20.

• Pressure test on every service call — not just installations
• PRV and expansion tank installed or verified as part of every boiler job
• City infrastructure work can spike pressure overnight without notice
• High pressure destroys heat exchangers and safety components silently

Safe: 65 PSI · Maximum safe: 80 PSI · Typical SF: 130–140 PSI

Victorian & Edwardian Space Constraints

SF’s housing stock presents unique spatial and structural challenges. Victorian flats have mechanical rooms sized for a 1960s water heater. Multi-unit Edwardian buildings have boiler rooms with 6-foot ceilings and no rear access. We specialize in making the right equipment fit the right space.

• Wall-mounted combi-boilers are ideal for tight Victorian utility closets
• Condensing boilers can vent through PVC when traditional flue runs aren’t possible
• We’ve installed in mechanical rooms as small as 20 square feet
• All units seismically strapped per SF DBI code requirements

Making the right equipment fit the correct space

Full DBI Permit Management

Every boiler installation and major repair in SF requires a DBI permit. We manage the entire process from application to final inspection, ensuring your work is documented and fully code-compliant — protecting your home and its resale value.

• We file the permit, coordinate the inspection, and attend the final walk-through
• You receive a copy of the approved permit for your records
• Non-permitted work creates complications at resale and prevents future insurance claims
• We know SF’s inspectors and what they look for — no re-inspections

Protecting your home and its resale value

Boiler Installation

Combi-boilers and system boilers properly sized for your SF home, with full pressure management and DBI permits.

• High-efficiency combi installations
• System boilers for multi-unit buildings
• Pressure testing & PRV installation
• DBI permit filing & inspection

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Boiler Maintenance

Annual service to prevent pressure-related damage and keep your SF boiler running at peak efficiency season after season.

• Annual tune-up & safety testing
• Heat exchanger cleaning
• Zone valve & pump inspection
• Gas combustion analysis

Schedule Maintenance

Emergency Repair

Rapid response to boiler failures across all SF neighborhoods. All brands serviced.

• All brands serviced
• Navien, Lochinvar, Viessmann, Triangle Tube
• Radiant system troubleshooting
• Same-day response when available

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What type of boiler is most popular in San Francisco?

Combi-boilers — they provide both space heating and domestic hot water in one compact wall-mounted unit. Perfect for SF’s tight mechanical spaces. Brands like Navien and Lochinvar are our most common installs.

Do I need permits for boiler work in SF?

Yes. DBI requires permits for all boiler replacements and major repairs. We handle everything from application to final inspection. Non-permitted work creates serious problems at resale.

Can you service my vintage Victorian radiant system?

Yes. Many SF Victorian homes have original radiant systems with cast-iron radiators and old zone configurations. We service these systems and can upgrade the heat source while preserving the original distribution system.