Certified Navien Service Specialist in SF and Marin. Tankless water heater and combi-boiler install, repair, and service.
Hydroflow is a certified Navien Service Specialist (NSS). Our technicians undergo extensive training directly from Navien to ensure we are experts in the installation, maintenance, and repair of their advanced condensing technology. Being an NSS means we have priority access to Navien technical support and genuine OEM parts — not aftermarket substitutes. We have installed hundreds of Navien units across the Bay Area. Whether you are upgrading from a traditional tank or need service on an existing Navien system, our team has the specific expertise these high-performance units demand.
Navien is the top-selling brand of high-efficiency condensing tankless water heaters and wall-hung boilers in North America — and for good reason. Their engineering eliminates the most frustrating problem with standard tankless units: the cold water sandwich effect. ComfortFlow® technology combines a built-in recirculation pump and buffer tank to deliver hot water faster and keep it ready at the tap, even when the main burner isn't running.
Full tank-to-tankless conversions including gas line sizing, PVC venting, 110v electrical, and condensate drain with acid neutralizer. We handle SFDBI permitting end-to-end.
Navien NCB and NFC combi-boilers provide both space heating and domestic hot water from one compact wall-hung unit — ideal for Hayes Valley flats and Sunset ADUs.
Annual Navien maintenance including heat exchanger flush, filter cleaning, error code diagnosis, and condensate system inspection. NSS status means genuine parts only.
Whether you need a new Navien install, annual maintenance, or emergency repair, Hydroflow's certified NSS technicians are ready.
Certified Navien Service Specialist • San Francisco & Marin County • Licensed & Insured
