Tankless Water Heater Repair in Santa Clara, CA
From ignition failures to flow sensor faults, we handle tankless water heater repair throughout Santa Clara, CA with clear pricing.
- Guaranteed Workmanship
- Fast Tankless Heater Repair
- Lasting Solutions
- Expert Local Plumbers
Need Tankless Water Heater Repair in Santa Clara, CA?
We descale, test and repair tankless units using manufacturer diagnostic steps.
Tankless Water Heater Repair in Santa Clara, CA for Every Major Brand
FBL Plumbing specializes in complete tankless water heater repair for homes and businesses throughout Santa Clara, CA. We understand the demands of on-demand hot water systems and are equipped to handle all common issues, from ignition failures to flow sensor problems.
Our expertise includes:
- Diagnosing and repairing flow sensor issues.
- Replacing heat exchangers and ignitors
- Cleaning and descaling heat exchanger coils.

Additional Plumbing Repair Services in Santa Clara, CA
We offer expert plumbing repair services across Santa Clara, CA to stop leaks, clear blockages, and keep every fixture working the way it should.

Customers
Why Choose FBL Plumbing for Tankless Water Heater Repair in Santa Clara, CA?
Choosing FBL Plumbing for your tankless water heater repair means selecting a company committed to quality and customer satisfaction.
- Brand Trained, Our plumbers know the diagnostics for Navien, Rinnai, Noritz, Rheem and Takagi units.
- Scale Experts, We descale thoroughly and recommend softening or scale filters suited to your water.
- Certified Pros, Our plumbers are brand-trained and certified to work on all major tankless water heater brands, ensuring precise diagnostics and repairs.
Citywide Coverage
FBL Plumbing covers every neighborhood in Santa Clara, providing prompt and reliable tankless water heater repair services. No matter where you are located within Santa Clara, our skilled technicians are just a call away, ready to restore your hot water.
Experienced Team
Each technician at FBL Plumbing is continuously trained on the latest tankless technologies and repair techniques, which means solid service for your system.
Safety-First Approach
Safety is our first concern in all our tankless water heater repair services, especially when dealing with gas lines and high-voltage electrical components. We strictly follow all local Santa Clara and Northern California plumbing codes and safety regulations to protect your home and family.
Trusted Certified Santa Clara Plumbing Services Professionals
At FBL Plumbing, we take pride in providing licensed, certified plumbing services throughout Santa Clara, CA. Backed by recognized industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver long-lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationProfessional Tankless Water Heater Repair Services in Santa Clara, CA
Emergency Tankless Repair in Santa Clara
A tankless unit that leaks internally or shows a fault you cannot clear needs quick attention. We prioritize no-hot-water calls and arrive with common sensors, igniters and filters. If a major component like a heat exchanger has failed, we check warranty coverage and order the part. We can often restore partial operation in the meanwhile.

Ignition Failure Repair in Santa Clara, CA
If your tankless unit will not fire, the cause may be a dirty flame rod, a bad igniter, low gas pressure or a blocked intake. We test each component and measure gas pressure at the inlet. Undersized gas lines are a frequent hidden cause when a tankless unit replaced a tank. We correct the issue so the unit lights reliably.
Electric Tankless Water Heater Repair in Santa Clara, CA
Electric tankless units offer a compact solution but can encounter problems with heating elements or circuit breakers. FBL Plumbing offers expert electric tankless water heater repair in Santa Clara, CA, addressing electrical faults, confirming proper wiring and replacing faulty elements to restore your hot water supply safely and efficiently.
Condensing Tankless Repair in Santa Clara, CA
Condensing tankless heaters, such as many Navien models, extract extra heat from exhaust and produce condensate. Clogged condensate traps, failed neutralizers and blocked drains can shut the unit down. We clean the trap, replace the neutralizer media and confirm proper drainage. PVC venting is also inspected for slope and sagging.
Rinnai Tankless Water Heater Repair in Santa Clara, CA
Rinnai is a popular tankless brand, and its units can face challenges such as scaling from hard water or issues with their flame rod. Our technicians in Santa Clara, CA are skilled at Rinnai tankless water heater repair, focusing on descaling services, fan motor replacements and resolving issues with gas valve assemblies. We make sure your Rinnai system continues to provide reliable, on-demand hot water, following manufacturer specifications.
Tankless Repair vs Replacement Cost in Santa Clara, CA
Descaling service typically costs $175 to $350, and sensor or igniter repairs run $250 to $600. Heat exchanger replacement can cost $800 to $1,500 or more unless covered by warranty. A new tankless unit installed typically ranges from $3,000 to $5,500. We compare these costs against the age and condition of your unit.
Gas Tankless Water Heater Repair in Santa Clara
Gas tankless water heaters require precise gas pressure and proper ventilation for safe operation. Issues can range from gas valve malfunctions to carbon monoxide sensor errors. Our licensed technicians in Santa Clara perform thorough diagnostics on gas lines, igniters and exhaust systems, so your unit is both functional and safe.

Navien Tankless Water Heater Repair in Santa Clara
Navien units are known for their advanced condensing technology but can sometimes experience issues with their circulation pump or exhaust systems. FBL Plumbing provides dedicated Navien tankless water heater repair in Santa Clara, addressing common problems like ignition failures or condensate drain blockages. Our team is familiar with Navien's parts and troubleshooting protocols, delivering a precise and effective repair that maintains your unit's high efficiency.
Tankless Water Heater Repair Near Me in Santa Clara, CA
Homes on hard water see scale on fixtures and water heaters, while very soft water can be mildly corrosive to older copper pipe. Our team knows how scale affects each brand and how to prevent it. That knowledge helps your unit reach its full service life.
When you search for 'tankless water heater repair near me' in Santa Clara, CA, FBL Plumbing is your go-to local expert. Our local teams allow for rapid response times to address your urgent hot water needs.
FBL Plumbing at a Glance
- Licensed and insured plumbers serving Santa Clara, CA
- 24/7 emergency service with same-day scheduling
- Clear written estimates, no hidden fees
- 4.8-star rated by 834+ Northern California customers
Santa Clara Map
Santa Clara Information
- Population
- 131,062
- Area codes
- 408/669/650
- Service area
- Santa Clara and communities within 40 miles
- Nearby
- Sunnyvale, Burbank, Cupertino, Milpitas
Tankless water heaters in Santa Clara, CA are prone to mineral buildup from hard water, making regular descaling and prompt repairs important to maintain efficiency and prevent premature system failure.
Expert Services
Trust our professionals for reliable FBL Plumbing solutions in Santa Clara, CA.
Our Specialized Plumbing Services in Santa Clara, CA
At FBL Plumbing, we provide a complete range of plumbing services across Santa Clara, CA. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Tankless Water Heater Repair Process Works in Santa Clara, CA
Our tankless water heater repair process in Santa Clara, CA is designed for efficiency and transparency, getting your hot water back quickly.
Request a Quote
Call (669) 319-2034 and share the brand, model and any error code on the display. We schedule a visit and bring parts that match the likely failure.
Diagnose the Unit
We read error history, test sensors and gas pressure and inspect for scale. You get a firm price for repair before any work begins.
Repair and Tune
We repair or replace failed components, descale if needed and test across low and high flow. Settings are adjusted so the unit runs at its best.
Frequently Asked Questions About Tankless Water Heater Repair in Santa Clara
The cost of tankless water heater repair in Santa Clara varies a lot depending on the issue, ranging from $150 for minor fixes like sensor replacement to $600 or more for complex repairs involving heat exchanger descaling or major component replacements. We provide a detailed estimate after diagnosing the specific problem.
Yes, FBL Plumbing stands behind its work. All our tankless water heater repairs come with a satisfaction guarantee and a warranty on both parts and labor. We will provide full warranty details with your repair estimate.
Error codes can be triggered by a variety of issues, such as low water flow, gas supply problems, ignition failures, exhaust blockages or faulty temperature sensors. Each code points to a specific system malfunction.
Minor tankless water heater repairs, such as replacing a sensor or igniter, typically do not require a permit in Santa Clara. Major component replacements, changes to the gas or water lines, or replacing the entire unit may require a plumbing permit to confirm code compliance.
Fluctuating temperatures can come from low flow rates, a dirty inlet filter, a failing flow sensor or scale on the heat exchanger. Crossed hot and cold lines at a fixture can also be the cause.
Many tankless heat exchangers carry long warranties, while other parts usually have shorter coverage. Warranties may require proof of maintenance, which we record.
We stand behind our tankless water heater repairs with a solid warranty on both parts and labor. The exact warranty period will be discussed with you before any work begins, providing you peace of mind.
Most repairs and descaling are done in one to three hours. If a part must be ordered, we typically return within a few business days.
What People Are Saying About Our Plumbing Experts?

Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Cupertino, CA
James P.
Our commercial plumbing system had a leak under the sink, and FBL Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Burbank, CA
Mark T.
When our office needed drain cleaning, FBL Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Fremont, CA
Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · Burbank, CA
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Burbank, CA
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Cupertino, CA













