You say you have a technician here. Is that actually true or just marketing?

It's true. Our Peninsula technician is based right here in San Mateo, so calls in this city and the towns around it get some of our quickest response, not a drive over from the East Bay.

My condo near downtown never gets hot water fast enough. Is that normal?

Not if the recirculation is set up right. A lot of the newer builds near 25th Avenue and B Street shipped with a generic recirculation schedule that has nothing to do with how the building's residents actually use hot water. I can retune it so the wait actually shortens.

Do you give me a real number before doing any repair?

Yes, always a written quote before repair work starts. The diagnostic is $99 and it's waived if you book the repair with us.

NAVIEN · SAN MATEO

Service · All Navien Models

Navien Tankless Water Heater Service · San Mateo, CA

Navien tankless service in San Mateo, home base for our Peninsula technician, from the B Street restaurant row to the Baywood streets

$99 diagnostic (waived with repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

Navien in San Mateo

Navien in San Mateo kitchens.

San Mateo is where our Peninsula technician actually lives, so this city gets some of the fastest response we offer outside San Ramon itself. The neighborhoods range from the older Craftsman and bungalow streets in Baywood and Hayward Park to newer condo construction near the restaurant rows on 25th Avenue and B Street downtown.

A lot of San Mateo's older housing stock still carries the original gas line sized for a small tank heater, and putting in a Navien means checking that line can deliver full fire on a busy morning with a shower and a dishwasher running together. On the newer downtown builds near B Street, the more common issue is a factory recirculation setup that was never retuned to how the household actually uses hot water.

We're based in San Ramon, but San Mateo functions as a second home base since our Peninsula technician works directly out of here. EPA 608 Universal certified and CSLB #1136642, with the $99 diagnostic waived once you commit to the repair, a written quote in hand before we start, and availability seven days a week.

Common repairs we do

What we close on the truck.

Undersized gas line on older Baywood and Hayward Park homes. These older San Mateo neighborhoods often still carry the gas branch sized for the original small tank heater. A Navien pulling full fire on a cold morning can starve that line and throw an ignition or flame-loss fault. I measure gas pressure under load and upsize the branch where it comes up short.
Recirculation left on a generic factory schedule downtown. The newer condo and townhome builds near the B Street and 25th Avenue restaurant rows often came with a Navien and a factory recirculation pump set to a default schedule that has nothing to do with the household's actual routine. I retune the recirculation programming so hot water shows up when people actually need it.
Scale buildup slowing recovery on heavier-use homes. Some San Mateo households run two or three showers back to back most mornings, and that heavier duty cycle lets scale build in the heat exchanger faster than it does on a lighter-use home. Recovery slows and the temperature starts drifting. I descale with a circulation pump and add isolation valves where the original install left them out.

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.

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Nearby cities

Navien service in neighboring cities.

More cities

Navien across our service area.

FAQ

Navien in San Mateo questions, answered.

You say you have a technician here. Is that actually true or just marketing?

It's true. Our Peninsula technician is based right here in San Mateo, so calls in this city and the towns around it get some of our quickest response, not a drive over from the East Bay.
My condo near downtown never gets hot water fast enough. Is that normal?

Not if the recirculation is set up right. A lot of the newer builds near 25th Avenue and B Street shipped with a generic recirculation schedule that has nothing to do with how the building's residents actually use hot water. I can retune it so the wait actually shortens.
Do you give me a real number before doing any repair?

Yes, always a written quote before repair work starts. The diagnostic is $99 and it's waived if you book the repair with us.

Need Navien service in San Mateo?

Tell us what is broken. We will quote it.