Radiant Heating
Warm floors for foggy Outer Sunset mornings. We design and install zoned radiant systems for new construction, ADUs, and garage conversions.
- • New construction & ADUs
- • Remodels & additions
- • System design & zoning
- • Service & repair

Coastal fog, salt air, and compact homes — Hydroflow knows Outer Sunset plumbing inside and 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.
Homes in the Outer Sunset typically have garage or basement water heater locations that make Title 24 upgrades significantly easier than in denser inner-city neighborhoods. Being close to the ocean adds one extra consideration: salt air accelerates corrosion on standard outdoor units. We're experienced with coastal installs — we know which equipment holds up and which doesn't. Whether you're installing indoors or exploring an exterior mount to free up garage space, we'll guide you toward hardware that handles the Sunset's marine environment.
The Outer Sunset is one of the strongest neighborhoods in SF for ADU radiant heating. Coastal proximity means the fog-driven chill is real — warm floors aren't a luxury here, they're practical comfort. And the neighborhood's typical garage layouts provide exactly the conditions radiant heating thrives in: new concrete pours, open framing, and accessible ceiling cavities. When you're converting a garage or pouring an ADU slab, that's the window to embed radiant tubing. Once concrete sets or framing is drywalled, the cost multiplies significantly. A combi-boiler manages both heating and domestic hot water — and handles the salt-air environment when properly specified.
Warm floors for foggy Outer Sunset mornings. We design and install zoned radiant systems for new construction, ADUs, and garage conversions.
Combi-boilers for Outer Sunset homes — salt-air rated hardware and coastal installation experience included.
Title 24-compliant tankless and heat pump water heaters with coastal-rated hardware for ocean-side homes.
Whether you need a simple fixture repair, a radiant heating system for your coastal ADU, or a code-compliant high-efficiency upgrade, Hydroflow is your certified local expert.
Serving Outer Sunset & All San Francisco Neighborhoods • Licensed & Insured • 20+ Years Experience