Tankless Water Heater Repair in Temecula, CA
Error code on your tankless display? FKM Plumbing repairs Navien, Rinnai, Noritz and Rheem tankless water heaters in Temecula, CA.
- Fast Tankless Diagnostics
- Prompt, Reliable Service
- Licensed Technicians
- Condensing Unit Specialists
Endless hot water again with tankless water heater repair in Temecula, CA.
Never let a cold shower ruin your day, contact FKM Plumbing for professional tankless water heater repair.
Your Go-To for Tankless Water Heater Repair in Temecula, CA
FKM Plumbing repairs gas and electric tankless water heaters in Temecula, including condensing and non-condensing models. We read error histories, test sensors and igniters, and descale heat exchangers choked by hard water.
Our expertise includes:
- Replacing heat exchangers and ignitors
- Troubleshooting and repairing flow sensor issues.
- Cleaning and descaling heat exchanger coils.

Additional Plumbing Repair Services in Temecula, CA
We offer expert plumbing repair services across Temecula, CA to fix leaks, restore flow, and keep your system running smoothly.

Customers
Why Choose FKM Plumbing for Tankless Water Heater Repair in Temecula, CA?
Our team brings extensive experience with many tankless water heater brands and models, so we can handle any repair challenge effectively.
- Scale Experts, We descale thoroughly and recommend softening or scale filters suited to your water.
- Southern California Expertise, We understand how local water and seasonal conditions can affect tankless systems and fit our solutions accordingly.
- Full System Check, Gas pressure, venting, filters and recirculation settings are tested together.
Citywide Coverage
From newer homes built with tankless systems to older homes that were upgraded, we service tankless units throughout Temecula. Our technicians reach most addresses fast.
Experienced Team
Each technician at FKM Plumbing is regularly trained on the latest tankless technologies and repair techniques, which means top-tier service for your system.
Safety-First Approach
Tankless heaters require correct gas pressure, venting and combustion air to operate safely. We check gas pressure under full fire and check vent terminations for proper clearances.
Trusted Certified Temecula Plumbing Services Professionals
At FKM Plumbing, we take pride in providing certified plumbing services throughout Temecula, 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 CertificationDependable Tankless Water Heater Repair Services in Temecula, CA
Tankless Repair vs Replacement Cost in Temecula, 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 usually ranges from $3,000 to $5,500. We compare these costs against the age and condition of your unit.

Navien Tankless Water Heater Repair in Temecula
Navien units are known for their advanced condensing technology but can sometimes experience issues with their circulation pump or exhaust systems. FKM Plumbing provides dedicated Navien tankless water heater repair in Temecula, addressing common problems like ignition failures or condensate drain blockages. Our team is familiar with Navien's parts and troubleshooting protocols, ensuring a precise and effective repair that maintains your unit's high efficiency.
Tankless Water Heater Error Code Diagnostics in Temecula, CA
Modern tankless water heaters display error codes to flag specific problems, from flow rate issues to combustion errors. Our experts in Temecula, CA are trained to interpret these codes accurately, using specialized diagnostic tools to pinpoint the exact component failure. This accuracy allows us to quickly order the correct parts and perform targeted repairs, saving you time and money. We address codes related to burner failures, fan issues and temperature sensor errors, and more.
Electric Tankless Water Heater Repair in Temecula, CA
Electric tankless units offer a compact solution but can encounter problems with heating elements or circuit breakers. FKM Plumbing offers expert electric tankless water heater repair in Temecula, CA, addressing electrical faults, confirming proper wiring and replacing faulty elements to restore your hot water supply safely and efficiently.
Recirculation Pump Repair in Temecula
Many tankless systems use internal or external recirculation to deliver hot water faster. Pump failures, check valve problems or wrong schedule settings can cause long waits or lukewarm water. We test the pump, check valves and controls and set the schedule to match your routine. A properly tuned system saves both water and gas.
Gas Tankless Water Heater Repair in Temecula
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 certified technicians in Temecula perform thorough diagnostics on gas lines, igniters and exhaust systems, so your unit is both functional and safe.
Rinnai Tankless Water Heater Repair in Temecula, 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 Temecula, CA are adept 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.

No Hot Water Tankless Repair in Temecula
When your tankless unit fails to produce hot water, it is often due to issues with the ignition, gas supply or a clogged heat exchanger. Our technicians in Temecula will carefully diagnose the root cause, whether it is a faulty igniter, a pressure sensor fault or mineral buildup. We carry common replacement parts for fast fixes, restoring your continuous hot water supply efficiently. We also check for proper venting, which is essential for the safe operation of your unit.
Tankless Water Heater Repair Near Me in Temecula, CA
Hard water shortens the life of tankless units, valves, and appliances, which is why many homes in Southern California add softeners or scale filters. Our team knows how scale attacks each brand and how to prevent it. That knowledge helps your unit reach its full lifespan.
Searching for tankless water heater repair near me often turns up companies that only replace tanks. FKM Plumbing repairs tankless units with the diagnostic skills they require. We work through error codes systematically to find the real cause.
FKM Plumbing at a Glance
- Fully licensed plumbing team covering Temecula, CA
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.8-star rated by 754+ Southern California customers
Temecula Map
Temecula Information
- Population
- 110,682
- Area codes
- 951/760/909
- Service area
- Temecula and communities within 40 miles
- Nearby
- Murrieta, Menifee, Lake Elsinore, Hemet
Hard water shortens the life of tankless units, valves, and appliances, which is why many homes in Southern California install softeners or scale filters. For homes in Temecula, CA, timely tankless water heater repair is vital for fighting mineral buildup and keeping hot water consistent in every season.
Expert Services
Trust our professionals for reliable FKM Plumbing solutions in Temecula, CA.
Our Specialized Plumbing Services in Temecula, CA
At FKM Plumbing, we provide a complete range of plumbing services across Temecula, 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 Temecula, CA
Here is how we diagnose and repair your tankless water heater.
Request a Quote
Call (213) 871-0701 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 efficiently.
Frequently Asked Questions About Tankless Water Heater Repair in Temecula
The cost of tankless water heater repair in Temecula, CA can range from $150 to $800 or more, depending on the issue. Simple fixes like sensor replacements might be at the lower end, while major component replacements like a heat exchanger could be higher. We provide a detailed estimate after diagnosis.
Yes, FKM 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 specific warranty details with your repair estimate.
While some basic troubleshooting, like checking the power supply or gas valve, can be done, most tankless water heater repairs require special tools and knowledge. Attempting DIY repairs on gas or electrical components can be dangerous and void your warranty. It is always best to call a licensed plumber.
Frequent causes of failure include mineral buildup from hard water, ignition problems, faulty flow sensors, clogged air filters, exhaust venting issues and electrical component failures. Regular maintenance, including descaling, can prevent many of these problems.
Yes, our technicians are trained and experienced in repairing all major tankless water heater brands, including Rinnai, Navien, Noritz, Rheem, Bosch, A.O. Smith and more. We carry a wide selection of common parts for various models.
Regular professional maintenance, including descaling and checking all connections, is the best defense. Installing a whole-home water softener can also greatly reduce mineral buildup in areas with very hard water.
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.
Minor repairs typically do not require a permit. If the repair involves major changes to the gas or water lines, or if the unit itself is being replaced, a permit from the Temecula building department may be necessary. We handle all necessary permitting for you.
What People Are Saying About Our Plumbing Experts?

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 · Oceanside, CA
James P.
Our commercial plumbing system had a leak under the sink, and FKM Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Temecula, 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 · Menifee, CA
Patricia H.
We had a slab leak that two other companies could not find. FKM Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Perris, CA
Mark T.
When our office needed drain cleaning, FKM Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Hemet, CA
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 · Temecula, CA













