Tankless Water Heater Replacement in Spokane Valley, WA
Get endless hot water back in your Spokane Valley, WA home with a tankless water heater replacement done right, from gas line sizing to venting and descaling valves.
- Same-Day Replacement Available
- Manufacturer Warranty Registration
- Prompt Tankless Replacement
- Licensed Gas Line Technicians
Need a Tankless Water Heater Replacement in Spokane Valley, WA?
Tell us your current unit model and we will quote a matching replacement over the phone.
Your Go-To for Tankless Water Heater Replacement in Spokane Valley, WA
FHN Plumbing replaces failing tankless water heaters with condensing and non-condensing units sized to your home's real flow demand. We check gas supply, venting clearances and water hardness before suggesting a model. That way the new heater is not starved for fuel or choked by scale.
Our expertise includes:
- Careful sizing and installation of new tankless units.
- Accurate sizing and model selection for your home.
- Safe gas and electric line connections for new units.

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

Customers
Why Choose FHN Plumbing for Tankless Water Heater Replacement in Spokane Valley, WA?
Choosing the right professionals for tankless water heater replacement is essential for long-term satisfaction and efficiency. Our team makes sure your new system runs smoothly from day one, providing endless hot water.
- Clean Venting, We route venting to meet manufacturer clearances from windows, doors and rooflines.
- Endless Hot Water, Stop running out of hot water, even during peak demand, a true luxury for busy Spokane Valley households with multiple showers or large families.
- Space Saving, Their compact design lets tankless units fit in smaller spaces, freeing up valuable room in your utility closet or garage.
Citywide Coverage
Whether your tankless sits on an exterior wall, in a garage or inside a utility closet, we cover all of Spokane Valley with the same scheduling and pricing. Most replacements are scheduled within a day or two.
Experienced Team
Each technician at FHN Plumbing is a specialist in tankless technology, so your replacement is done accurately and efficiently. We focus on details like proper gas line sizing, venting and electrical connections for top performance and safety.
Safety-First Approach
We perform careful 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 in line with Washington regulations.
Trusted Certified Spokane Valley Plumbing Services Professionals
At FHN Plumbing, we take pride in providing licensed, certified plumbing services throughout Spokane Valley, WA. 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 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 Replacement Services in Spokane Valley, WA
Electric Tankless Water Heater Replacement in Spokane Valley, WA
For properties without natural gas access or those looking for an all-electric solution, electric tankless water heaters are a practical choice. FHN Plumbing offers electric tankless water heater replacement services in Spokane Valley, WA. This often involves careful assessment of your home's electrical panel capacity, as these units require substantial amperage. We make sure your new electric tankless unit is installed safely and correctly, providing on-demand hot water without the need for gas lines.

Tankless vs. Tank Water Heater Conversion in Spokane Valley, WA
Thinking about converting from a traditional tank water heater to a tankless system in your Spokane Valley, WA 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 makes for a smooth transition, so you can enjoy the long-term benefits of a modern, efficient tankless system.
Navien Tankless Water Heater Replacement in Spokane Valley, WA
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 Spokane Valley, WA, you can count on FHN Plumbing. We have extensive experience with Navien's advanced systems, including their combination boiler and water heater units. Our installation process focuses on optimizing your new Navien's performance, so you benefit from its energy-saving features and reliable hot water output.
Like-for-Like Tankless Swaps in Spokane Valley
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 quickest 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.
Condensing Tankless Replacement in Spokane Valley
Condensing tankless units like the Navien NPE series or Rinnai Sensei reach efficiencies above 90 percent by capturing heat from exhaust gases. They vent through inexpensive 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. Constant moisture west of the mountains encourages mold, rot and corrosion around leaks, so small drips should not be ignored. 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 the price.
Residential Tankless Water Heater Replacement in Spokane Valley
For homeowners in Spokane Valley, upgrading to a tankless water heater offers real benefits like endless hot water and reduced energy use. We assess your household's hot water demand to recommend the ideal sized unit, so you get optimal performance. Our team handles everything from safely disconnecting your old unit to installing the new tankless system. That includes any needed gas and water line adjustments and venting changes to meet current codes.
Emergency Tankless Water Heater Replacement in Spokane Valley
A sudden tankless water heater failure can leave your Spokane Valley home without hot water, which is a major inconvenience. FHN Plumbing offers emergency tankless water heater replacement to restore your hot water quickly. 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.

Exterior Mount Tankless Units in Spokane Valley, WA
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. Disconnecting hoses, insulating crawlspace pipes and protecting hose bibs before the first freeze prevents most winter damage. 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 guard the water and gas lines. Exterior models are often the simplest swap when the gas line is already sized correctly.
Tankless Water Heater Replacement Near Me in Spokane Valley, WA
If you are searching for tankless water heater replacement near me in Spokane Valley, WA, FHN Plumbing is your local expert. Our service area covers the entire 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.
When your tankless unit needs replacing, you want a reliable local company. We aim to be the go-to choice for tankless water heater replacement near me in Spokane Valley, offering reliable solutions and transparent pricing to our neighbors throughout the community.
FHN Plumbing at a Glance
- Licensed and insured plumbers serving Spokane Valley, WA
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.9-star rated by 382+ Washington customers
Spokane Valley Map
Spokane Valley Information
- Population
- 108,235
- Area codes
- 509/208/541
- Service area
- Spokane Valley and communities within 40 miles
- Nearby
- Spokane, Pasco, Richland, Kennewick
Many rural Washington homes rely on private wells, and some carry iron, manganese or other minerals that call for testing and treatment. Scale builds inside tankless heat exchangers over time, so a correctly sized replacement with flush valves protects homes in Spokane Valley, WA from early failures.
Expert Services
Trust our professionals for reliable FHN Plumbing solutions in Spokane Valley, WA.
Our Specialized Plumbing Services in Spokane Valley, WA
At FHN Plumbing, we provide a complete range of plumbing services across Spokane Valley, WA. 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 Spokane Valley, WA
We follow a proven method for every tankless water heater replacement in Spokane Valley, from initial assessment to final testing, for a quality installation.
Request a Quote
Call us at (425) 491-3131 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 clear, upfront estimate.
On-Site Assessment
Our licensed plumber will visit your Spokane Valley home to assess your existing water heating system, plumbing, gas or electrical connections and venting. This helps us recommend the best tankless model and make sure it is properly sized for your household.
Expert Installation
Once you approve the quote, our team will proceed with the professional installation of your new tankless water heater. We carefully 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 Spokane Valley
The cost of tankless water heater replacement in Spokane Valley, WA 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 necessary 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.
Yes, tankless water heaters are usually more energy-efficient than traditional tank models. They only heat water on demand, eliminating the standby heat loss that comes with keeping a large tank of water hot. This can lead to real savings on your utility bills over time, particularly in homes with varying hot water usage.
Often yes, especially when converting from a tank. Many tankless units need three quarter inch gas pipe and a meter that can supply 199,000 BTU on top of your furnace, range and dryer.
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. FHN Plumbing also provides a labor warranty on our installation work for your peace of mind. We will go over warranty details for your chosen unit during your consultation.
FHN Plumbing installs and replaces all major trusted brands of tankless water heaters. Our preferred brands include Rinnai, Navien, Noritz and Rheem, as they are known for their reliability, energy efficiency and long-term performance. We can also source and install other brands based on your preference or home requirements.
To prepare for tankless water heater replacement, make sure the area around your existing unit is clear and easy to reach for our plumbers. If possible, clear a path to the installation site and keep pets or children away from the work area. We will handle draining the old unit and all other technical preparations.
We do not recommend it. Gas line sizing, venting clearances and combustion testing require training, and improper installs can void the warranty or create carbon monoxide hazards.
A standard tankless water heater replacement typically takes between 4 and 8 hours. This timeframe can vary based on whether we are replacing an existing tankless unit with a similar model or upgrading from a traditional tank water heater. A tank conversion can call for more extensive changes to gas lines, electrical or venting.
What People Are Saying About Our Plumbing Experts?

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 · Wenatchee, WA
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 · Pasco, WA
James P.
Our commercial plumbing system had a leak under the sink, and FHN Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Pasco, WA
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 · Richland, WA
Emily R.
I called FHN 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 · Spokane, WA
Patricia H.
We had a slab leak that two other companies could not find. FHN Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Yakima, WA













