Hydroflow installs and services Rinnai tankless water heaters across San Francisco and Marin County. The #1 selling tankless brand — and we know these systems inside and out.
Hydroflow technicians are experts in sizing, installing, and servicing Rinnai tankless water heaters. We have completed extensive training to ensure optimal performance and longevity for your Rinnai system. We specialize in converting homes from traditional storage tanks to Rinnai tankless systems — handling all the associated infrastructure: gas line sizing, sealed PVC venting, 110v electrical, and condensate drain with acid neutralizer.
Rinnai is the #1 selling brand of tankless water heaters in North America. Their commitment to quality is real — every single unit is tested before shipping. Their tankless units are known for durability and long lifespan (up to 20 years with proper maintenance). Smart-Circ™ distinguishes Rinnai from competitors: it's an intelligent recirculation system that learns your household's hot water usage patterns, ensuring hot water is ready at the tap before you even turn it on — without the energy waste of constant recirculation.
Full tank-to-tankless conversion including gas line sizing, sealed PVC venting, 110v electrical, and condensate drain with acid neutralizer. SFDBI permit handled end-to-end.
Rinnai recommends annual service including inline water filter cleaning, air intake filter check, and full heat exchanger descaling flush. In hard water areas, a 6-month flush may be needed.
Smart-Circ™ setup and configuration to optimize hot water wait times for your household. We program usage patterns and verify the pump is correctly sized for your loop distance.
Tank-to-tankless conversions, annual maintenance, and Smart-Circ™ setup across San Francisco and Marin County.
Experienced Rinnai Installer • SF & Marin County • Licensed & Insured
