Tankless Water Heater Installation in Bothell, WA
Experience continuous hot water in your Bothell, WA home with a new tankless water heater. FHN Plumbing provides professional installation, delivering comfort and efficiency.
- Factory-Trained Installers
- Energy Savings Possible
- Reliable Local Plumbers
- Energy-Saving Solutions
Ready for Endless Hot Water in Bothell, WA?
Call now for a flat-rate tankless installation quote that includes gas, venting and water connections.
Expert Tankless Water Heater Installation for Bothell, WA Families
FHN Plumbing focuses on professional tankless water heater installation for homeowners across Bothell, WA. We help you move from traditional tank-style heaters to modern, energy-efficient tankless units that provide hot water on demand.
Our expertise includes:
- Expert sizing and venting for top performance.
- Clean integration with existing plumbing systems.
- Installation of gas and electric tankless models.

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

Customers
Why Choose FHN Plumbing for Tankless Water Heater Installation in Bothell, WA?
Choosing the right plumbing partner for a significant upgrade like a tankless water heater is crucial for long-term satisfaction. FHN Plumbing brings years of experience to every installation, delivering quality workmanship and reliable performance.
- Longer Lifespan, Tankless water heaters typically last longer than conventional models, offering a better long-term investment.
- Scale Protection, Isolation valves and scale filters protect the heat exchanger from hard water.
- Energy Savings, Tankless units only heat water as needed, which can significantly reduce your energy bills compared to traditional tank heaters.
Citywide Coverage
From bustling downtown blocks to quiet suburban streets, our team is equipped to provide quality tankless water heater installation across all of Bothell. Your hot water comfort is our priority, close to home.
Experienced Team
Each FHN Plumbing technician is a specialist in modern plumbing, including the fine details of tankless systems. We take pride in precise installations that homeowners in Bothell can depend on for years to come.
Safety-First Approach
We conduct thorough inspections after every tankless installation to make sure everything is operating safely and efficiently. You can rest assured that your new system from FHN Plumbing meets strict standards of safety and quality.
Trusted Certified Bothell Plumbing Services Professionals
At FHN Plumbing, we take pride in providing certified plumbing services throughout Bothell, WA. 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.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationReliable Tankless Water Heater Installation Services in Bothell, WA
Tankless Water Heater Replacement in Bothell, 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 necessary adjustments to plumbing and venting and install your new, more efficient model. Our goal is to make the transition as smooth as possible, ensuring continuous hot water in your Bothell, WA home.

Commercial Tankless Water Heater Installation in Bothell
Businesses often have higher and more consistent hot water demands than homes. FHN Plumbing provides commercial tankless water heater installation, sizing systems to meet the needs of restaurants, salons or other commercial spaces. We understand the importance of minimal disruption to your operations during installation, providing a quick and professional setup in Bothell.
Upgrading from Tank to Tankless in Bothell, 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 optimally, giving you a modern hot water solution in Bothell, WA.
Tankless Water Heater Relocation in Bothell
Sometimes the best spot for a tankless water heater is not where your old tank was located. For homeowners in Bothell looking to free up space or improve access, FHN Plumbing offers professional tankless water heater relocation. This can involve rerouting gas or water lines and possibly electrical work, all handled with care and to local codes by our experienced team.
Rinnai, Navien and Noritz Installation in Bothell, WA
We install leading tankless brands including Rinnai, Navien, Noritz and Rheem. Rinnai offers a wide model range and strong parts support, while Navien condensing units often include built-in recirculation pumps. Noritz is known for durable commercial-grade heat exchangers. We help you compare models by flow rate, efficiency and warranty.
Tankless vs Tank Cost Comparison in Bothell, WA
Tankless installation costs more upfront than a standard tank because of the unit price, gas line upgrades and venting changes. Over time, lower standby energy losses and a longer expected lifespan make up for part of that cost. Tankless units often last 15 to 20 years with proper descaling, compared with about 8 to 12 years for many tanks in hard water areas. We give you a side-by-side quote so you can decide what suits your budget.
Gas Tankless Water Heater Installation in Bothell
For many homes in Bothell, 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 high-performance, on-demand hot water.

Tank to Tankless Conversions in Bothell
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 haul away your old tank and patch the old flue penetration.
Local Tankless Water Heater Installation in Bothell, WA
Our local presence means faster response times and a commitment to serving our neighbors in Bothell. You can trust FHN Plumbing to provide prompt, professional and courteous service for all your tankless water heater needs, right in your neighborhood.
Our local presence means faster response times and a team that understands the challenges and opportunities for tankless systems in Bothell. We are committed to bringing modern, efficient hot water to every home in our community.
FHN Plumbing at a Glance
- Licensed and insured plumbers serving Bothell, WA
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.9-star rated by 382+ Washington customers
Bothell Map
Bothell Information
- Population
- 50,213
- Area codes
- 425/206/360
- Service area
- Bothell and communities within 40 miles
- Nearby
- Kirkland, Shoreline, Redmond, Bellevue
Installing a tankless water heater in Bothell, 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 Bothell, WA.
Our Specialized Plumbing Services in Bothell, WA
At FHN Plumbing, we provide a complete range of plumbing services across Bothell, 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 Installation Process Works in Bothell, 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 detailed 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 the manufacturer's specifications.
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 Bothell
The cost for tankless water heater installation in Bothell 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.
We install Rinnai, Navien, Noritz and Rheem tankless water heaters. Each brand offers different features, efficiency levels and warranty terms.
A straight replacement takes four to six hours. Tank to tankless conversions with gas and venting changes typically take a full day.
Many manufacturers offer 10 to 15 year heat exchanger warranties and shorter coverage on parts. We also warranty our installation labor.
Sizing a tankless water heater depends on your household's peak hot water demand, measured in gallons per minute (GPM), and the temperature rise needed. Our plumbers will assess the hot water fixtures in your home and review your usage patterns to recommend the appropriate GPM and BTU rating for your needs in Bothell.
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.
Yes. When properly sized, a tankless water heater can provide an endless supply of hot water, even for large families. It is crucial to select a unit with a high enough GPM (gallons per minute) rating to meet your peak demand.
Signs you might need a new water heater, tankless or otherwise, include a lack of hot water, rust-colored water, strange noises from the unit or frequent leaks. For tankless systems in particular, frequent error codes or a noticeable drop in hot water flow could point to a need for service or replacement.
What People Are Saying About Our Plumbing Experts?

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 · Redmond, WA
Mark T.
When our office needed drain cleaning, FHN Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Bellevue, 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 · Shoreline, WA
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 · Bothell, 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 · Bellevue, WA
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 · Bothell, WA













