Tankless Water Heater Replacement in Anaheim, CA
Is your old tankless unit giving out in Anaheim? Get reliable tankless water heater replacement from FKM Plumbing for your Southern California home.
- Same-Day Replacement Available
- Fast Tankless Installation
- Prompt Tankless Replacement
- Code Compliant
Endless Hot Water Starts With One Call in Anaheim, CA.
Call FKM Plumbing today for a free estimate on your tankless water heater replacement.
Reliable Tankless Water Heater Replacement Services in Anaheim, CA
FKM Plumbing handles every part of a tankless swap, including removing the old unit, upgrading the gas line if needed, installing new concentric or PVC venting and adding service valves for annual flushing. You get a clean, code-compliant install and a walkthrough of how to keep the heat exchanger in good shape.
Our expertise includes:
- Correct sizing and model selection for your home.
- Careful removal and disposal of old water heaters.
- Scale prevention with isolation valves and inline filtration options

Additional Plumbing Replacement Services in Anaheim, CA
When repairs are no longer enough, our replacement services in Anaheim, CA deliver durable upgrades that restore full performance.

Customers
Why Choose FKM Plumbing for Tankless Water Heater Replacement in Anaheim, CA?
Our expertise means your new tankless unit is installed correctly the first time, avoiding common issues that come from improper sizing or connection.
- Energy Savings, Tankless water heaters only heat water when you need it, which can significantly reduce energy use compared to traditional tank models, a big plus for Southern California utility bills.
- Space Saving, Their compact design allows tankless units fit in smaller spaces, freeing up valuable room in your utility closet or garage.
- Clean Venting, We route venting to meet manufacturer clearances from windows, doors and rooflines.
Citywide Coverage
FKM Plumbing proudly serves every neighborhood and community within Anaheim for all your tankless water heater replacement needs. Whether you are downtown or in the surrounding suburbs, our team is ready to deliver prompt and professional service.
Experienced Team
Our team of licensed plumbers has extensive experience with all major tankless water heater brands and models. They complete ongoing training to stay current on installation techniques and safety protocols for this specialized equipment.
Safety-First Approach
We perform thorough safety checks after every tankless water heater replacement, including leak detection for gas lines and proper ventilation. You can rest assured your new system is safe and compliant with Southern California regulations.
Trusted Certified Anaheim Plumbing Services Professionals
At FKM Plumbing, we take pride in providing licensed, certified plumbing services throughout Anaheim, CA. Backed by leading 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 Replacement Services in Anaheim, CA
Tankless vs. Tank Water Heater Conversion in Anaheim, CA
Thinking about converting from a traditional tank water heater to a tankless system in your Anaheim, CA home? This is a common and worthwhile upgrade, but it requires specialized expertise. We handle the entire conversion, which can involve rerouting gas lines, upgrading electrical service, modifying water lines and installing new venting. Our team ensures a smooth transition, so you can enjoy the long-term benefits of a modern, efficient tankless system.

Condensing Tankless Replacement in Anaheim
Condensing tankless units like the Navien NPE series or Rinnai Sensei reach efficiencies above 90 percent by recovering heat from exhaust gases. They vent through low-cost PVC and produce acidic condensate that must be neutralized and drained properly. We install a neutralizer cartridge and route the condensate line to an approved drain. Intense sun breaks down exposed plastic pipe, sprinkler parts, and outdoor fittings, so they wear out faster than indoor plumbing. Condensing units still save gas because they work year-round on showers, laundry and dishes. We explain the cost difference so you can decide if the efficiency gain is worth it.
Tank to Tankless Conversions in Anaheim, CA
Converting from a 40 or 50 gallon tank to tankless frees up floor space and ends standby heat loss in a garage or closet. The catch is that tankless units usually need a larger gas line, often three quarter inch or bigger, plus new venting. We check your meter size and pipe run before quoting so there are no surprises mid-job. We also cap or reroute the old flue and seal the roof penetration if it is no longer used. Expect a conversion to take a full day.
Commercial Tankless Water Heater Replacement in Anaheim, CA
Businesses in Anaheim, CA often need robust hot water solutions, and tankless systems can provide the efficiency and capacity needed. We specialize in replacing commercial tankless units for restaurants, offices and other facilities with minimal disruption to your operations. Our plumbers are skilled with high-capacity models and complex plumbing layouts. We deliver a steady hot water supply that meets your business's demands and health code requirements.
Emergency Tankless Replacement in Anaheim, CA
A tankless heater that leaks from the heat exchanger or refuses to ignite can leave you with no hot water at all. We offer same-day emergency replacement for common models and can often get a unit installed the day you call. If your exact model is not in stock, we can sometimes do a temporary repair to restore hot water while the replacement ships. We shut off gas and water to stop any leak on arrival. Call (213) 871-0701 anytime your tankless quits.
Recirculation Tankless Upgrades in Anaheim, CA
If you are tired of running the tap waiting for hot water, a tankless with a built-in recirculation pump can bring heat to the fixture in seconds. Navien A series and Rinnai units with internal pumps can use a dedicated return line or a crossover valve under the farthest sink. We program schedules so the pump runs only during your morning and evening peaks. That keeps gas use in check while saving thousands of gallons of wasted water a year. This upgrade is a favorite in long single-story ranch homes.
Commercial Tankless Replacement in Anaheim
Restaurants, salons and small offices often use multiple tankless units linked together on a rack system. When one or more units fail, we replace them and rebalance the cascade controls so they share the load. We check gas pressure under full demand, since commercial racks can draw more than 600,000 BTU combined. Scheduling is flexible, so we can work after hours and keep your business open. We also set up a descaling schedule suited to your water usage.

Like-for-Like Tankless Swaps in Anaheim
When your existing tankless has a cracked heat exchanger or a failed control board that is not worth repairing, a direct replacement is often the fastest fix. We match the new unit to your current gas line, venting type and mounting location whenever possible. Many Rinnai and Navien models share similar footprints, which keeps wall patching to a minimum. We also replace the old service valves if they are corroded or stuck. Most like-for-like swaps are done in four to six hours.
Tankless Water Heater Replacement Near Me in Anaheim, CA
If you are searching for tankless water heater replacement near me, you want a local plumber who understands Southern California water and gas codes. FKM Plumbing serves Anaheim with trucks stocked for tankless installs. We can often give you a firm quote after a short phone call and a few photos.
Do not settle on your home's hot water supply. For dependable tankless water heater replacement near me in Anaheim, choose FKM Plumbing. We provide upfront estimates, clear communication and expert workmanship, making your upgrade to endless hot water a smooth and stress-free experience.
FKM Plumbing at a Glance
- Licensed and insured plumbers serving Anaheim, CA
- Same-day appointments and 24/7 emergency response
- Upfront, flat-rate pricing before work begins
- 4.8-star rated by 754+ Southern California customers
Anaheim Map
Anaheim Information
- Population
- 340,512
- Area codes
- 714/657/949
- Service area
- Anaheim and communities within 40 miles
- Nearby
- Yorba Linda, Chino Hills, Orange, Tustin
Around Anaheim, flushing the water heater yearly and cleaning aerators keeps scale buildup from cutting flow and efficiency. Scale builds inside tankless heat exchangers over time, so a properly sized replacement with flush valves protects homes in Anaheim, CA from early failures.
Expert Services
Trust our professionals for reliable FKM Plumbing solutions in Anaheim, CA.
Our Specialized Plumbing Services in Anaheim, CA
At FKM Plumbing, we provide a complete range of plumbing services across Anaheim, 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 Replacement Process Works in Anaheim, CA
We keep the process easy to follow from the first call to the final combustion test.
Request a Quote
Call us at (213) 871-0701 or fill out our online form to schedule an initial consultation. We will discuss your hot water needs and current system issues, and provide a detailed, upfront estimate.
On-Site Assessment
Our licensed plumber will visit your Anaheim home to assess your existing water heating system, plumbing, gas or electrical connections and venting. This helps us recommend the right tankless model and make sure it is properly sized for your household.
Expert Installation
Once you approve the quote, our team will start the professional installation of your new tankless water heater. We safely remove the old unit, make any needed plumbing or gas line changes, and make sure the new system is correctly vented and fully operational.
Frequently Asked Questions About Tankless Water Heater Replacement in Anaheim
The cost of tankless water heater replacement in Anaheim, CA usually ranges from $3,000 to $6,000, depending on the unit's capacity, brand, complexity of installation, such as converting from a tank model, and any needed electrical or gas line upgrades. This price usually includes the unit itself and labor. We provide a written, upfront quote after a thorough assessment of your home.
A direct swap usually takes four to six hours. A tank to tankless conversion with new gas and venting typically takes a full day.
We install Navien, Rinnai, Noritz, Takagi and Rheem tankless heaters. Each has its own strengths, and we recommend based on your flow needs, venting options and budget.
Well-maintained tankless units can last 15 to 20 years. In hard water areas without regular descaling, heat exchangers can fail much sooner. Annual flushing makes the biggest difference.
With proper installation and regular maintenance, a new tankless water heater usually lasts 20 to 25 years. This is much longer than traditional tank water heaters, which usually last 10 to 15 years. Regular flushing and descaling can help extend the life of your tankless unit, especially in areas with hard water.
New tankless water heaters usually come with a manufacturer's warranty, which usually covers the heat exchanger for 10 to 15 years and parts for 3 to 5 years. FKM Plumbing also provides a labor warranty on our installation work for your peace of mind. We will discuss warranty details for your chosen unit during your consultation.
DIY tankless water heater replacement is generally not recommended due to the complexity of gas lines, high-voltage electricity, water connections and venting requirements. Improper installation can lead to serious gas leaks, carbon monoxide poisoning, water damage or electrical hazards. It is best to hire a licensed and experienced plumber like FKM Plumbing.
A standard tankless water heater replacement, if you are upgrading from an existing tankless unit, usually takes 4 to 8 hours. If you are converting from a traditional tank water heater, the process can take longer, possibly a full day, due to additional plumbing, gas or electrical changes required for proper installation and venting.
What People Are Saying About Our Plumbing Experts?

Emily R.
I called FKM Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Anaheim, 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 · Orange, 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 · Orange, 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 · Chino Hills, 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 · Chino, 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 · Chino, CA













