Tankless Water Heater Installation in Lakewood, WA
FHN Plumbing provides expert tankless water heater installation throughout Lakewood, WA, delivering reliable hot water on demand.
- Energy-Saving Solutions
- Licensed & Insured
- Prompt, Reliable Installation
- Modern Hot Water Solutions
Get a Tankless Water Heater in Lakewood, WA.
Our certified plumbers are ready to provide a precise and professional tankless water heater installation.
Professional Tankless Water Heater Installation for Homes in Lakewood, WA
For reliable tankless water heater installation in Lakewood, WA, trust FHN Plumbing. Our licensed plumbers make sure your new system is sized correctly and installed to all local plumbing codes, giving you years of efficient hot water.
Our expertise includes:
- Installation of gas and electric tankless models.
- Clean integration with existing plumbing systems.
- Professional venting and gas line connections.

Additional Plumbing Installation Services in Lakewood, WA
We install water heaters, pumps, lines, and fixtures across Lakewood, WA with careful, permitted work that passes inspection the first time.

Customers
Why Choose FHN Plumbing for Tankless Water Heater Installation in Lakewood, WA?
Our team understands how water hardness and seasonal temperature swings affect tankless performance. Many rural Washington homes rely on private wells, and some carry iron, manganese or other minerals that call for testing and treatment. We will guide you through the process, from selection to final setup, with honesty and expertise.
- Energy Efficiency, Tankless units heat water only when needed, potentially lowering your utility bills compared to traditional storage tanks.
- Gas Done Right, Gas lines are upsized when needed so the heater never starves for fuel.
- Endless Hot Water, Never run out of hot water again, even with several showers or appliances running at once.
Citywide Coverage
FHN Plumbing serves every neighborhood of Lakewood, so no matter where you are located, our skilled plumbers can reach you. We understand the plumbing needs throughout the Lakewood area and are always ready to help.
Experienced Team
Our plumbers are trained on major tankless brands and understand how each handles venting, condensate and gas pressure. They configure settings and recirculation options on site.
Safety-First Approach
Safety and code compliance come first on every tankless water heater installation we take on in Lakewood. Our plumbers carefully follow local Washington plumbing codes, from gas line connections to proper venting, preventing potential hazards.
Trusted Certified Lakewood Plumbing Services Professionals
At FHN Plumbing, we take pride in providing licensed, certified plumbing services throughout Lakewood, 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 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 CertificationEfficient Tankless Water Heater Installation Services in Lakewood, WA
Tankless Water Heater Replacement in Lakewood, WA
If your old tankless unit is failing or you are upgrading from a traditional tank, FHN Plumbing offers smooth tankless water heater replacement. We carefully remove the old unit, make any needed adjustments to plumbing and venting and install your new, more efficient model. Our goal is to make the transition as smooth as possible, keeping continuous hot water in your Lakewood, WA home.

Upgrading from Tank to Tankless in Lakewood, WA
Making the switch from a traditional tank water heater to a tankless system involves more than just swapping units. It often requires changes to gas lines, electrical wiring and venting. FHN Plumbing manages all aspects of this conversion, making sure all upgrades meet current codes and your new tankless unit performs at its best, giving you a modern hot water solution in Lakewood, WA.
Hard Water Protection for Tankless Units in Lakewood, WA
Calcium scale is the leading cause of tankless heater failure. Many rural Washington homes rely on private wells, and some carry iron, manganese or other minerals that call for testing and treatment. Scale coats the heat exchanger, reducing efficiency and triggering error codes. We install isolation valves so the unit can be flushed with a vinegar or descaling solution once a year. A scale inhibitor cartridge or whole-home softener provides extra protection.
Residential Tankless Water Heater Installation in Lakewood
FHN Plumbing specializes in installing tankless water heaters for residential properties. We assess your home's hot water demands, family size and existing utility connections to recommend the most suitable unit, so you get the right capacity for your needs. Our installations are designed to be energy efficient, providing endless hot water while often lowering your monthly utility bills in Lakewood.
Cost-Effective Tankless Conversions in Lakewood, WA
While the initial cost of a tankless water heater installation in Lakewood, WA may be higher than a traditional tank, the long-term energy savings and longer lifespan often make it a more cost-effective solution. We provide detailed estimates, outlining the benefits and potential rebates, to help you make an informed decision for your home. Our installations are designed for maximum efficiency, putting money back in your pocket.
Gas Tankless Water Heater Installation in Lakewood
For many homes in Lakewood, gas tankless water heaters are a popular choice due to their powerful heating and lower operating costs compared to electric models. Our certified technicians handle all aspects of gas line connections, venting and combustion air requirements, so your system operates safely and efficiently. We work with leading brands like Rinnai and Noritz to provide dependable, on-demand hot water.
Rinnai Tankless Water Heater Installation in Lakewood, WA
Rinnai tankless water heaters are a popular choice for their reliability and long lifespan, making them a smart investment for homeowners across Lakewood, WA. Our plumbers are factory-trained on Rinnai systems, ensuring a clean installation that follows all manufacturer specifications. We make sure gas line sizing, venting and water connections are correct so your Rinnai unit provides endless hot water efficiently for years.

Tank to Tankless Conversions in Lakewood
Converting from a tank requires more than swapping units. A 40 gallon tank heater uses roughly 40,000 BTU, while a whole-home tankless unit may need up to 199,000 BTU, so the gas line often needs to be upsized. Venting changes from a metal flue to PVC or stainless, and the unit moves to a wall location. We remove and dispose of your old tank and patch the old flue penetration.
Tankless Water Heater Installation Near Me in Lakewood, WA
When you search for 'tankless water heater installation near me' in Lakewood, WA, FHN Plumbing is your reliable local expert. We know the plumbing and homeowner needs throughout the area, providing prompt and personalized service right to your doorstep.
If you are searching for tankless water heater installation near me, our local team can visit, measure and give you a firm quote. We check your gas meter, line size and venting options during the same visit. Many installs are scheduled within a few days.
FHN Plumbing at a Glance
- Fully licensed plumbing team covering Lakewood, WA
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.9-star rated by 382+ Washington customers
Lakewood Map
Lakewood Information
- Population
- 62,303
- Area codes
- 253/564/360
- Service area
- Lakewood and communities within 40 miles
- Nearby
- Tacoma, South Hill, Federal Way, Lacey
Installing a tankless water heater in Lakewood, WA is a sound investment through warm and chilly seasons alike, delivering consistent hot water without the energy waste of heating a large tank all year.
Expert Services
Trust our professionals for reliable FHN Plumbing solutions in Lakewood, WA.
Our Specialized Plumbing Services in Lakewood, WA
At FHN Plumbing, we provide a complete range of plumbing services across Lakewood, 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 Process Works in Lakewood, WA
We follow a clear process so your tankless installation is sized right, installed safely and ready to go.
Request a Quote
Call (425) 491-3131 to schedule a site visit. We assess your fixtures, gas supply and venting options, then give you a written quote.
Install and Upgrade
We remove your old heater, upsize gas lines if needed and mount the new unit. Venting, water connections and isolation valves are installed to manufacturer specs.
Test and Train
We fire the unit, check gas pressure and test hot water at multiple fixtures. Then we show you how to flush the system and register your warranty.
Frequently Asked Questions About Tankless Water Heater Installation in Lakewood
The cost for tankless water heater installation in Lakewood can range from $3,000 to $6,000, depending on the unit type (gas or electric), brand, capacity and complexity of the installation, such as gas line upgrades or new venting. This price typically includes the unit and professional labor. We provide a detailed, no-obligation estimate after an on-site assessment.
Many manufacturers offer 10 to 15 year heat exchanger warranties and shorter coverage on parts. We also warranty our installation labor.
Most tankless water heaters come with a manufacturer's warranty of 10 to 15 years on the heat exchanger and 3 to 5 years on parts. FHN Plumbing also provides a warranty on our installation labor, which we will spell out in your service agreement.
Size depends on how many fixtures run at once and your incoming water temperature. Many homes need a unit rated around 7 to 10 gallons per minute.
While it may seem appealing, tankless water heater installation is complex and should only be performed by a licensed professional. It involves gas lines, high-voltage electricity, water connections and detailed venting systems, all of which require specialized knowledge and adherence to safety codes. Incorrect installation can be dangerous and cancel warranties.
A standard tankless water heater installation, replacing an existing tank, typically takes 4 to 8 hours. If extensive plumbing or gas line changes are required, it may take a full day. Our team works efficiently to restore your hot water as quickly as possible.
A straight replacement takes four to six hours. Tank to tankless conversions with gas and venting changes typically take a full day.
Fluctuating water temperature, error codes, reduced flow and unusual noises are common signs. Scale buildup is often the cause in hard water areas.
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 · Tacoma, 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 · Lakewood, 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 · Lakewood, 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 · Auburn, 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 · Auburn, 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 · Olympia, WA













