Why San Francisco Homeowners Rely on Hydroflow for their Boiler, Water Heater, and Radiant Heating needs
Licensed Bay Area specialists for high-efficiency boilers, tankless water heaters, and hydronic radiant systems — including the older piping common in SF Victorians and Eichler homes.
SF boiler maintenance & repair
Pressure checks, flushing, and repairs that protect high-efficiency boilers before a winter failure.
20+ years in Bay Area homes
Deep experience from Victorian flats in San Francisco to Eichlers and hillside homes in Novato / Marin.
Upfront radiant & water heater pricing
Clear written estimates for radiant heating and water heater work — no surprise change orders.
Right-sized system design
We match equipment to your load and piping — including multifamily & HOA jobs — not a one-size swap.
Plumbing & Heating Services Across San Francisco & Marin
Hydroflow installs, repairs, and maintains the systems Bay Area homes rely on every day. Start with the service you need, or explore our San Francisco and Novato pages for neighborhood-specific details.
Boiler repair & installation
High-efficiency boiler replacements, hydronic troubleshooting, and protective flushing for aging SF systems.
Water heaters & tankless
Tank and tankless water heater service sized for your household — including heat-pump and code-ready upgrades.
Radiant heating systems
Slab and hydronic radiant design, remodel support, and repairs for comfortable, even heat.
Leak detection devices
Smart shutoff and monitoring installs that satisfy insurers and catch slab or supply leaks early.
Also see our Eichler plumbing specialists, multifamily & HOA work, and recent projects.
Areas We Serve
Primary service area: San Francisco neighborhoods and Marin County.
FAQ
Hydroflow is a San Francisco and North Bay plumbing and hydronic heating company owned by Garry Devaney. Services are boilers, radiant heating (including Eichler in-slab systems), tank, tankless and heat-pump water heaters, leak detection, and residential plumbing.
All of San Francisco, including the Sunset, Richmond, Hayes Valley, Marina, Russian Hill, Pacific Heights, Noe Valley, Mission, Castro, SOMA, Haight-Ashbury and Potrero Hill, plus Marin County and the North Bay, including Novato, Lucas Valley and San Rafael, and surrounding Bay Area communities.
Call or text (415) 623-6564, or email hydroflowsf@gmail.com. Hydroflow can also be reached through hydroflow.info. Include an address, a description of the issue, and photos of the equipment if available.
Yes. Most projects include an estimate at no charge. Hydroflow assesses the job on site and writes the price before work starts.
Yes. Hydroflow holds California CSLB License #1004731 and is bonded and insured, with general liability and workers' compensation coverage. Certificates are available on request.
Yes. Work includes pressure-testing, finding leaks in, flushing, and protecting original in-slab radiant loops, and connecting them to new high-efficiency boilers.
Most installs are $1,500 to $2,000 all-in, depending on the size of the main line.
Yes. A machine-readable version of this FAQ, verified by owner Garry Devaney on October 16, 2026, is available at hydroflow-faq.json.
Trusted Brands We Install & Service
Core manufacturers we install every week.
From the Hydroflow Blog & Projects
Practical guides and real jobs from San Francisco and Marin.
Need Radiant or Boiler Service in San Francisco?
Don’t wait for a no-heat emergency. Contact Hydroflow for a free estimate on boilers, water heaters, and radiant systems.
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