How fast can you reach Alamo from your San Ramon base

Very fast. Alamo borders Danville, which sits right between us and you, so it is one of the shortest drives we make. We can usually offer same-week and often next-day appointments.

My house has six fixtures going at once on busy mornings. Can one Navien handle it

It depends on the gas line and the model. I measure peak simultaneous flow and the available gas. Some Alamo homes are fine on one correctly sized NPE-A2. Others genuinely need two units cascaded, and I will tell you which before you spend money.

Is annual descaling really necessary out here

Yes, more so than near the bay. Alamo's hard water scales the exchanger quickly. Once a year keeps the efficiency and the warranty intact. We can set you on a reminder so it does not get missed.

NAVIEN · ALAMO

Service · All Navien Models

Navien Tankless Water Heater Service · Alamo, CA

Navien tankless service in Alamo, for the big single-family homes off Danville Boulevard and Round Hill

$75 diagnostic (waived with repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

Navien in Alamo

Navien heating and cooling in Alamo.

Alamo runs to large single-family homes on big lots, a lot of them off Danville Boulevard, Stone Valley, and up in Round Hill. These houses ask a lot of a water heater. Multiple bathrooms, a soaking tub, sometimes a pool house, and the gas demand adds up. A single tankless unit has to be sized for that, and an undersized one runs cold during a morning rush.

This is inland Tri-Valley, so summers are hot and the water is hard. The hard water is what shortens Navien heat exchanger life here if nobody descales. For the bigger Alamo homes I often look at a Navien NPE-A2 sized correctly, or a cascade of two units when one cannot keep up with simultaneous demand.

We are right next door in San Ramon and Alamo is one of our closest service areas. Work runs through our HVAC division, Bay Area HVAC Service. EPA 608 Universal certified, CSLB #1136642, $75 diagnostic waived with the repair, written quotes, and 7 day availability.

Common repairs we do

What we close on the truck.

Cold water sandwich on undersized single units. Big Alamo homes with one tankless and several baths get the cold slug between draws. Often the unit was sized too small for the simultaneous demand. I check the gas BTU input and flow rate, and where the home truly needs it I recommend a second unit in cascade rather than fighting a unit that is just too small.
Heavy scale from inland hard water. Alamo water is hard and the heat exchanger scales fast without annual flushing. You see dropping outlet temperature and eventually a temperature or ignition fault. I descale with a circulation pump and verify the recirculation settings if the home has a dedicated return loop.
Recirculation pump and HotButton faults. Many larger Alamo homes use Navien's built-in recirculation to kill the wait for hot water down long runs. The internal pump or the external loop sensor fails and you lose instant hot water. I test the pump, the buffer tank where fitted, and the recirc programming.

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.

$75

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

90 days on consumables, 1 year on major parts, 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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FAQ

Navien in Alamo questions, answered.

How fast can you reach Alamo from your San Ramon base

Very fast. Alamo borders Danville, which sits right between us and you, so it is one of the shortest drives we make. We can usually offer same-week and often next-day appointments.
My house has six fixtures going at once on busy mornings. Can one Navien handle it

It depends on the gas line and the model. I measure peak simultaneous flow and the available gas. Some Alamo homes are fine on one correctly sized NPE-A2. Others genuinely need two units cascaded, and I will tell you which before you spend money.
Is annual descaling really necessary out here

Yes, more so than near the bay. Alamo's hard water scales the exchanger quickly. Once a year keeps the efficiency and the warranty intact. We can set you on a reminder so it does not get missed.

Need Navien service in Alamo?

Tell us what is broken. We will quote it.

Call (925) 999-4095