Expert Plumbing Services in The Sunset

From emergency repairs and radiant heating to high-efficiency boiler and water heater upgrades, Hydroflow is your local Sunset District specialist.

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The California Title 24 Mandate

Standard Gas Water Heaters Are Being Phased Out

Starting soon, non-compliant standard gas water heaters will be phased out of California. When your old tank fails, you will likely be forced to upgrade to a high-efficiency condensing unit or a heat pump. Upgrading isn’t as simple as swapping a tank — high-efficiency units require entirely new infrastructure: dedicated 110v or 220v electrical circuits, condensate drain lines with acid neutralizers, and sealed PVC venting routed to the exterior. Our Advice: If you are planning a remodel right now, run the utilities early. Even if you aren’t replacing the heater yet, getting the drain, vent route, and electrical in place will save you thousands of dollars down the road.

Your Sunset Home Advantage

Garage Access Makes the Transition Easier Here

Upgrading to high-efficiency can be complex elsewhere in the city, but homes in The Sunset typically boast ~1,500 sq ft layouts with garage or basement water heater locations. This makes the Title 24 upgrade significantly easier and more cost-effective than in a Hayes Valley flat or downtown condo. With our favorite supply houses located near the Sunset and easier street parking than downtown, our vans can get loaded properly and get to your door faster — we typically finish these jobs quicker than comparable installs in other neighborhoods.

The Sunset ADU Advantage

Open Garage Frames + New Concrete = Ideal Radiant Conditions

The Sunset District is one of the best neighborhoods in all of San Francisco for radiant heating installations. When you’re converting a garage into an ADU, you’re often pouring new concrete — putting pipes in a fresh slab is the most efficient, longest-lasting radiant application possible. If the garage ceiling is open (unfinished framing visible from below), we can staple tubing to the underside of the floor above. Either way, a new construction radiant system paired with a combi-boiler handles both the ADU’s heating and domestic hot water from a single compact wall-hung unit.

Plumbing Services in The Sunset

Radiant Heating

Warm floors for foggy Sunset mornings. We design and install zoned radiant systems for new construction, ADUs, and garage conversions.

Boiler Installation & Service

Combi-boilers that handle space heating and hot water in a single compact unit — ideal for Sunset District homes.

Water Heater Upgrades

Title 24-compliant tankless and heat pump water heaters. We handle the electrical, venting, and permitting end-to-end.

Common Questions — The Sunset

Is my Sunset garage a good candidate for ADU radiant heating?

Yes — the Sunset District is one of the best neighborhoods in SF for radiant installs. If you’re pouring new concrete for an ADU conversion, pipes go in the slab before it’s poured. If the garage ceiling is open framing, we can staple tubing to the floor joists from below. A combi-boiler handles both zone heating and domestic hot water from a single unit.

Has my water pressure changed after recent street work?

Probably, and you likely weren’t notified. SF infrastructure work can double your water pressure in a specific neighborhood without any resident notification. We check pressure on every service call — most plumbers don’t. Safe pressure is 65 PSI; we regularly see 130+ PSI in homes near recent dig sites. A pressure reducing valve protects your fixtures and extends the life of your entire plumbing system.

Do I need a State Farm leak detection device?

If you’re insured with State Farm, yes — they now require a whole-home leak detection device ($1,500–$2,000 installed) as a policy condition. Without it, you risk losing coverage. The device monitors flow and pressure patterns 24/7 and automatically shuts off your water if a leak is detected — even while you’re away. We supply, install, and commission these units.

What permits does SF require for plumbing work?

Any plumbing work over $500 must be permitted in San Francisco. Water heater replacements require permits and seismic strapping. Earthquake gas shutoff valves are required when selling or doing major remodels. We handle the entire SFDBI permitting process for you.