Radiant Heating
Zoned radiant floor heating for Hayes Valley Victorians and flats — no ductwork, just comfortable warmth.
- • New construction & ADUs
- • Remodels & additions
- • System design & zoning
- • Service & repair
Victorian flats, microscopic utility closets, and Title 24 complexity — Hydroflow knows Hayes Valley 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.
Upgrading a water heater to meet California high-efficiency standards presents unique challenges in Hayes Valley. Unlike single-family homes in the avenues, the multi-story Victorians and compact flats here require specialized expertise to retrofit safely and legally. In a Hayes Valley flat, the water heater is often crammed into a microscopic utility closet in the center of the house — not a garage. This creates real challenges for electrical access, venting, and condensate routing. We specialize in Navien ultra-compact tankless units that fit where traditional tanks simply cannot.
Heat pump water heaters require approximately 900 sq ft of airflow clearance to operate properly — essentially a full-sized garage. The compressor needs room to pull ambient air and extract heat from it. In a Hayes Valley flat or Victorian where the water heater lives in a central utility closet, that clearance simply doesn't exist. This means when California's Title 24 rules force you off your old gas storage tank, tankless is your only practical compliant path. The good news: an ultra-compact Navien NPE series unit fits in spaces where nothing else will, delivers endless hot water on demand, and sidesteps the multi-story airflow problem entirely.
Zoned radiant floor heating for Hayes Valley Victorians and flats — no ductwork, just comfortable warmth.
Wall-hung combi-boilers that fit in tight Hayes Valley utility closets — space heating and hot water from one compact unit.
Ultra-compact tankless units for tight Hayes Valley flats. We handle multi-story venting, electrical, and permits.
Whether you need a compact tankless upgrade, a radiant heating system for your Victorian flat, or expert help navigating Title 24, Hydroflow is your certified local expert.
Serving Hayes Valley & All San Francisco Neighborhoods • Licensed & Insured • 20+ Years Experience