Tankless Water Heater Replacement in Riverside, CA
Is your old tankless unit failing in Riverside? Get dependable tankless water heater replacement from FKM Plumbing for your Southern California home.
- Code Compliant
- Transparent Pricing
- Prompt Tankless Replacement
- Isolation Valves Installed Standard
Need a Tankless Water Heater Replacement in Riverside, CA?
Contact FKM Plumbing today for a free estimate on your tankless water heater replacement.
Reliable Tankless Water Heater Replacement for Riverside, CA Homes
FKM Plumbing specializes in professional tankless water heater replacement across Riverside, CA. If your current tankless unit is past its prime, constantly breaking down, or simply not meeting your hot water demands, it might be time for an upgrade. We handle all aspects of removing your old unit and installing a brand new, energy-efficient model.
Our expertise includes:
- Safe gas and electric line connections for new units.
- Careful removal and disposal of old water heaters.
- Careful sizing and installation of new tankless units.

Additional Plumbing Replacement Services in Riverside, CA
When repairs are no longer enough, our replacement services in Riverside, CA deliver modern, efficient equipment installed right.

Customers
Why Choose FKM Plumbing for Tankless Water Heater Replacement in Riverside, CA?
Choosing the right professionals for tankless water heater replacement is essential for long-term satisfaction and efficiency. Our team ensures your new system runs right from day one, providing endless hot water.
- Endless Hot Water, Stop running out of hot water, even during peak demand, a true luxury for busy Riverside households with multiple showers or large families.
- Clean Venting, We route venting to meet manufacturer clearances from windows, doors and roof edges.
- Scale Protection, Every install includes isolation valves so the heat exchanger can be descaled without cutting into the pipes.
Citywide Coverage
We replace tankless water heaters in every neighborhood of Riverside, from newer builds with garage-mounted units to older homes converting from a tank. Our trucks carry venting kits and gas fittings for both indoor and outdoor installs.
Experienced Team
Our plumbing team is made up of highly trained and licensed professionals with extensive experience in tankless water heater technology. We keep up on the latest models, installation techniques and local Southern California plumbing codes.
Safety-First Approach
Tankless heaters burn a lot of gas at full fire, so we pressure test gas connections and verify meter capacity before lighting the unit. Venting is installed and sealed to prevent carbon monoxide from entering living space.
Trusted Certified Riverside Plumbing Services Professionals
At FKM Plumbing, we take pride in providing licensed, certified plumbing services throughout Riverside, 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 lasting results you can trust.
Call Us Now
PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationEfficient Tankless Water Heater Replacement Services in Riverside, CA
Tank to Tankless Conversions in Riverside, 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 often 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.

Rinnai Tankless Water Heater Replacement in Riverside
Rinnai is a leading brand in the tankless water heater market, known for its quality and innovation. If your Rinnai unit is aging or acting up, FKM Plumbing provides expert Rinnai tankless water heater replacement in Riverside. We make sure your new Rinnai unit is installed correctly, maximizing its efficiency and lifespan. Our technicians are familiar with the installation requirements and venting options for Rinnai models, so the upgrade goes cleanly.
Commercial Tankless Water Heater Replacement in Riverside, CA
Businesses in Riverside, CA often require 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 reliable hot water supply that meets your business's demands and health code requirements.
Tankless vs. Tank Water Heater Conversion in Riverside, CA
Considering converting from a traditional tank water heater to a tankless system in your Riverside, CA home? This is a common and beneficial 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 makes for a smooth transition, so you can enjoy the long-term benefits of a modern, efficient tankless system.
Emergency Tankless Water Heater Replacement in Riverside
A sudden tankless water heater failure can leave your Riverside home without hot water, which is a major inconvenience. FKM Plumbing offers emergency tankless water heater replacement to restore your hot water fast. We put a priority on urgent situations, working to diagnose the issue and, if replacement is necessary, get a new unit installed as soon as possible. Our goal is to cut down your downtime and get your home back to normal with reliable hot water.
Navien Tankless Water Heater Replacement in Riverside, CA
Navien tankless water heaters are popular for their condensing technology, delivering high efficiency and performance. When it is time for a Navien tankless water heater replacement in Riverside, CA, you can count on FKM Plumbing. We have extensive experience with Navien's advanced systems, including their combination boiler and water heater units. Our installation process focuses on dialing in your new Navien's performance, so you benefit from its energy-saving features and reliable hot water output.
Exterior Mount Tankless Units in Riverside, CA
Many homes have tankless heaters mounted on an exterior wall with no venting at all, since the unit exhausts directly outside. These units face sun, rain and temperature swings, which can wear out plastic covers and wiring over time. On an occasional cold night, covering backflow preventers and outdoor valves is typically enough to avoid a break. When we replace them, we check the pipe cover, freeze protection settings and the electrical connection. We can add a protective pipe cover kit to shield the water and gas lines. Exterior models are often the simplest swap when the gas line is already sized correctly.

Condensing Tankless Replacement in Riverside
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. Hot inland summers push water heaters and pool plumbing hard, while coastal salt air can corrode exposed metal fittings. 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.
Tankless Water Heater Replacement Near Me in Riverside, CA
If you are searching for tankless water heater replacement near me in Riverside, CA, FKM Plumbing is your local expert. Our service area covers the whole region, so a professional plumber is always close by when you need a new, efficient hot water solution. We are known for quick response times and reliable service for all tankless installations.
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 Riverside with trucks stocked for tankless installs. We can usually give you a firm quote after a short phone call and a few photos.
FKM Plumbing at a Glance
- Fully licensed plumbing team covering Riverside, CA
- 24/7 emergency service with same-day scheduling
- Upfront, flat-rate pricing before work begins
- 4.8-star rated by 754+ Southern California customers
Riverside Map
Riverside Information
- Population
- 318,858
- Area codes
- 951/714/909
- Service area
- Riverside and communities within 40 miles
- Nearby
- Jurupa Valley, Moreno Valley, Eastvale, Corona
Around Riverside, flushing the water heater yearly and cleaning aerators keeps mineral 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 Riverside, CA from early failures.
Expert Services
Trust our professionals for reliable FKM Plumbing solutions in Riverside, CA.
Our Specialized Plumbing Services in Riverside, CA
At FKM Plumbing, we provide a complete range of plumbing services across Riverside, 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 Riverside, CA
Our tankless water heater replacement process in Riverside, CA is designed to be straightforward and efficient, so you get reliable hot water with minimal hassle.
Request a Quote
Call FKM Plumbing today at (213) 871-0701 to schedule an on-site evaluation for your tankless water heater replacement. Our team will discuss your hot water needs and provide a clear, transparent estimate.
Unit Selection
Based on your home's demands and existing setup, we will help you choose the ideal tankless water heater model. We consider factors like fuel type, flow rate and energy efficiency.
Expert Installation
Our licensed plumbers will carefully remove your old unit and install the new tankless water heater. We make sure all gas, water and vent connections meet Southern California code requirements for safety and performance.
Frequently Asked Questions About Tankless Water Heater Replacement in Riverside
The cost of tankless water heater replacement in Riverside, CA typically 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 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 extra plumbing, gas or electrical changes required for proper installation and venting.
Most manufacturers offer 10 to 15 years on the heat exchanger and about 5 years on parts for residential use. We add our own labor warranty and register the unit on your behalf.
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 largest difference.
Most jurisdictions in Southern California require a permit for water heater replacement, especially when gas piping or venting changes. We take care of permits where they are required.
A direct swap typically takes four to six hours. A tank to tankless conversion with new gas and venting typically takes a full day.
New tankless water heaters typically come with a manufacturer's warranty on the heat exchanger, usually 10 to 15 years, and on parts, usually 3 to 5 years. FKM Plumbing also provides a warranty on our installation workmanship. We will go over all warranty details with you before your replacement so you understand your coverage.
Tankless water heater replacement is a complex job that involves gas lines, electrical wiring, water connections and venting. It is strongly recommended to hire a licensed professional like FKM Plumbing due to the safety risks and potential for improper installation, which can lead to leaks, gas hazards or inefficient operation. Professionals also protect code compliance and warranty validity.
What People Are Saying About Our Plumbing Experts?

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 · Moreno Valley, 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 · Moreno Valley, 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 · Jurupa Valley, 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 · Fontana, 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 · Corona, 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 · Rialto, CA













