ADRIUM Service Solutions
(925) 999-4095 · San Ramon, CA · CSLB #1136642 · BBB A+
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NAVIEN · FOSTER CITY

Service · All Navien Models

Navien Tankless Water Heater Service · Foster City, CA

Navien tankless service in Foster City, the planned waterfront community of lagoons, condos, and townhomes

  • $99 diagnostic (waived with repair)
  • Same or next-day best effort
  • CSLB #1136642
Call (925) 999-4095

Navien in Foster City

Navien in Foster City kitchens.

Foster City is a planned community built on filled land around a system of lagoons, and most of the housing here, whether a single-family home near the water or one of the many condo and townhome complexes, dates from the same building boom in the 1960s and 70s. That means a lot of Navien installs are working out of the same tight utility closet layout the builders standardized across the whole city.

Those condo and townhome utility closets were sized for a small tank heater, not a tankless unit with its own intake and exhaust needs, so venting clearance is the first thing I check on a Foster City call. HOA rules on exterior vent termination add another layer that a straightforward single-family install in a neighboring city doesn't have to deal with.

We work out of San Ramon, and ADRIUM has a technician stationed on the Peninsula in San Mateo County, so Foster City sits well within easy reach. We're CSLB licensed under #1136642 and EPA 608 Universal certified, the diagnostic is $99 and waived if you book the repair, and you'll have a written quote before anything else, seven days a week.

Common repairs we do

What we close on the truck.

  • Tight closet venting on condo and townhome installs. Foster City's condo and townhome utility closets were built for a small tank heater, and squeezing a Navien in there means the intake and exhaust often end up closer to minimum clearance than the manual wants. I check the actual clearance and re-route where the original install cut it too close.
  • HOA-restricted vent runs affecting draft. Some Foster City HOAs limit where an exterior vent can terminate, and I've found installs where the vent run got routed longer than ideal just to satisfy that rule, which affects draft and can trigger intermittent faults under a long draw. I measure the actual run and adjust the unit's settings to match rather than fighting the vent path.
  • Recirculation pump wear from steady condo-density use. Smaller condo floor plans still put a Navien's recirculation pump through steady daily use, since the unit is often serving more people per square foot than a single-family home nearby. The pump or check valve wears out earlier than you'd expect. I test both and replace only what has actually failed.

Models we service

Navien product lines.

  • Condensing tankless water heaters (NPE and KD series)
  • Combi-boilers (heat plus domestic hot water)
  • Condensing gas boilers for hydronic heat
  • Recirculation and ComfortFlow systems
  • Stainless heat exchangers and venting

Pricing and warranty

What it costs. What we stand behind.

  • $99

    Diagnostic visit. Waived when you book the repair with us.

  • Written

    3 months standard, 1 year on inverter boards, up to 2 years on sealed-system rebuilds. Quoted in writing before work starts.

  • CSLB

    #1136642. Bonded and insured. We file warranty paperwork when applicable.

Recent work

Navien jobs we have closed.

See all case studies →

Nearby cities

Navien service in neighboring cities.

More cities

Navien across our service area.

FAQ

Navien in Foster City questions, answered.

  • I'm in a condo in Foster City. Can you even work on tankless units in a shared building?
    Yes, that's a regular part of what we do here. Foster City's condo and townhome utility closets have a specific layout, and I know what clearance and venting those units need before I even open the closet door.
  • How do you handle a Foster City call from San Ramon?
    ADRIUM staffs a technician on the Peninsula in San Mateo County, and Foster City is a short drive from there, so it's part of our regular local coverage rather than a special trip across the bay.
  • Will I know the cost before you start any repair?
    Yes. I give a written quote before repair work begins, and the $99 diagnostic fee goes away entirely once you decide to book the repair.

Need Navien service in Foster City?

Tell us what is broken. We will quote it.

Call (925) 999-4095
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