Top-rated tankless water heater installers.

Get matched with top tankless water heater installers in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Tankless water heater installers in Seattle

Avatar for HD Partners, LLC
HD Partners, LLC
1141 NW 53rd Street
4.50(
1
)
Approved Pro
HD Partners, LLC
1141 NW 53rd Street
4.50(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online 24/7 or feel free to give us a call today! 206-789-5353 www.hdpartners.net

"Very knowledgeable staff and always open to male new solutions to get the job done!"

Kevin M on April 2023

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online 24/7 or feel free to give us a call today! 206-789-5353 www.hdpartners.net

"Very knowledgeable staff and always open to male new solutions to get the job done!"

Kevin M on April 2023


Avatar for Randklev Plumbing LLC
Randklev Plumbing LLC
1280 NW Huckle Dr
4.75(
2
)
Approved Pro
Randklev Plumbing LLC
1280 NW Huckle Dr
4.75(
2
)
Approved Pro
Customers say: Quick response
59 local quotes requested
Free onsite estimate

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction

"A+++ Great company and friendly owner and employee. Leak is long gone! Thank you so much Willy and David!"

Kathy B on July 2025

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction

"A+++ Great company and friendly owner and employee. Leak is long gone! Thank you so much Willy and David!"

Kathy B on July 2025


Avatar for Northwest Hydrojetting, LLC
Northwest Hydrojetting, LLC
16107 44th Ave E
5.00(
5
)
Approved Pro
Northwest Hydrojetting, LLC
16107 44th Ave E
5.00(
5
)
Approved Pro
Customers say: Quick response
7 years of experience
Free onsite estimate

Hello! Thank you for choosing Northwest Hydrojetting LLC, your go-to company for plumbing repairs, hydrojetting and installations such as toilets, faucets, water heaters etc. We offer very competitive pricing as we are family owned & operated. We look forward to assisting you with your next project!

"I have hired this company on many different occasions by this point. Hot water tank replacement both electric and gas, re-plumbing a house, finish trim such as vanity, bathrooms, kitchen sink, etc. Installing clean out for mainline side sewer, scoping and clearing obstructions for mainline side sewer, digging down and replacing clogged side sewers. What is impressive and important to me is the sense of urgency, attention to detail and quality of work. In my 20 years of looking after houses, Nathan is by far the best plumber I?ve ever worked. And on top of all of that, I find the pricing to be very competitive.. "

Brad G on July 2025

Hello! Thank you for choosing Northwest Hydrojetting LLC, your go-to company for plumbing repairs, hydrojetting and installations such as toilets, faucets, water heaters etc. We offer very competitive pricing as we are family owned & operated. We look forward to assisting you with your next project!

"I have hired this company on many different occasions by this point. Hot water tank replacement both electric and gas, re-plumbing a house, finish trim such as vanity, bathrooms, kitchen sink, etc. Installing clean out for mainline side sewer, scoping and clearing obstructions for mainline side sewer, digging down and replacing clogged side sewers. What is impressive and important to me is the sense of urgency, attention to detail and quality of work. In my 20 years of looking after houses, Nathan is by far the best plumber I?ve ever worked. And on top of all of that, I find the pricing to be very competitive.. "

Brad G on July 2025


Avatar for Harts Plumbers, Electricians, & HVAC Technicians
Harts Plumbers, Electricians, & HVAC Technicians
568 Industry Dr Suite 100
4.71(
863
)
Approved Pro
Harts Plumbers, Electricians, & HVAC Technicians
568 Industry Dr Suite 100
4.71(
863
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
39 local quotes requested

Harts is your trusted local provider for all your plumbing, electrical, and HVAC needs. With 10 years of business experience, our certified team specializes in delivering top-quality residential and commercial solutions in the PNW. From emergency repairs to routine maintenance, we pride ourselves on using the latest technology for efficient diagnostics and repairs, ensuring minimal disruption to your daily life. We are known to pay exquisite attention to detail while making your satisfaction our number one priority. Our company has been serving the local community with dedication and professionalism for over a decade. We specialize in a wide range of services, from intricate electrical installations and repairs to comprehensive plumbing work, including leak detection, pipe repairs, fixture installations, and much more. You can trust Harts Plumbers, Electricians, & HVAC Technicians for professional and friendly service for all your plumbing, electrical, & HVAC projects. Call us today!

"Terrible service and experience. AVOID. UNRELIABLE. SCAMMERS. They canceled on me at the last minute, then tried to cancel on me again a week later until I complained. Then someone shows up LATE and did a visual inspection to assess that my furnace is extremely old, everything is faulty or falling apart, likely can not be fixed because parts may not be available, recommends a entirely NEW furnace replacement. Since it is such a HUGE commitment, I declined. I called someone else, they came, fixed it ALL within 30min and said everything is working great. INCOMPETENT SCAMMERS!!"

Peter C on April 2025

Harts is your trusted local provider for all your plumbing, electrical, and HVAC needs. With 10 years of business experience, our certified team specializes in delivering top-quality residential and commercial solutions in the PNW. From emergency repairs to routine maintenance, we pride ourselves on using the latest technology for efficient diagnostics and repairs, ensuring minimal disruption to your daily life. We are known to pay exquisite attention to detail while making your satisfaction our number one priority. Our company has been serving the local community with dedication and professionalism for over a decade. We specialize in a wide range of services, from intricate electrical installations and repairs to comprehensive plumbing work, including leak detection, pipe repairs, fixture installations, and much more. You can trust Harts Plumbers, Electricians, & HVAC Technicians for professional and friendly service for all your plumbing, electrical, & HVAC projects. Call us today!

"Terrible service and experience. AVOID. UNRELIABLE. SCAMMERS. They canceled on me at the last minute, then tried to cancel on me again a week later until I complained. Then someone shows up LATE and did a visual inspection to assess that my furnace is extremely old, everything is faulty or falling apart, likely can not be fixed because parts may not be available, recommends a entirely NEW furnace replacement. Since it is such a HUGE commitment, I declined. I called someone else, they came, fixed it ALL within 30min and said everything is working great. INCOMPETENT SCAMMERS!!"

Peter C on April 2025


Avatar for Jafco Company
Jafco Company
14058 Aurora Ave N
4.81(
18
)
Approved Pro
Jafco Company
14058 Aurora Ave N
4.81(
18
)
Approved Pro
Super Service Award
Customers say: True professional
227 local quotes requested
8 years of experience

With 25 years of Industry experience we are here for all your Sewer System needs. From installations to repairs we handle it, and being locally owned and operated means that you get the highest quality service and response time every time. Give us a call today for your Sewer System needs!

"Great communication, timely, respectful, knowledgeable, and so helpful!"

Jamie F on May 2025

With 25 years of Industry experience we are here for all your Sewer System needs. From installations to repairs we handle it, and being locally owned and operated means that you get the highest quality service and response time every time. Give us a call today for your Sewer System needs!

"Great communication, timely, respectful, knowledgeable, and so helpful!"

Jamie F on May 2025


Avatar for Beacon Plumbing & Mechanical INC
Beacon Plumbing & Mechanical INC
515 7th Ave S
5.00(
6
)
Approved Pro
Beacon Plumbing & Mechanical INC
515 7th Ave S
5.00(
6
)
Approved Pro
Customers say: Quick response
29 local quotes requested
26 years of experience

Beacon Plumbing is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"The tech explained everything and was very polite."

Michelle B on April 2025

Beacon Plumbing is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"The tech explained everything and was very polite."

Michelle B on April 2025


Avatar for Plumbing Champions
Plumbing Champions
17710 Highland View Dr
4.89(
9
)
Approved Pro
Plumbing Champions
17710 Highland View Dr
4.89(
9
)
Approved Pro
Customers say: Quick response
12 local quotes requested
1 years of experience

Plumbing Champions is built on hard work and hands-on experience in the plumbing industry. We serve residential clients, providing reliable plumbing solutions for every challenge, from faucet installations to unexpected repairs. What we enjoy most is meeting new people and tackling new challenges each day. With experience across various companies, we know how to deliver superior service and results that exceed expectations. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the costumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Call us today!

"They were great. Showed up same day, installed in 1 hour. Easy peasy and the best deal!"

Alex W on May 2025

Plumbing Champions is built on hard work and hands-on experience in the plumbing industry. We serve residential clients, providing reliable plumbing solutions for every challenge, from faucet installations to unexpected repairs. What we enjoy most is meeting new people and tackling new challenges each day. With experience across various companies, we know how to deliver superior service and results that exceed expectations. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the costumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Call us today!

"They were great. Showed up same day, installed in 1 hour. Easy peasy and the best deal!"

Alex W on May 2025


Avatar for Intrepid Mechanical Solutions LLC
Intrepid Mechanical Solutions LLC
914 N Machias Rd
5.00(
1
)
Approved Pro
Intrepid Mechanical Solutions LLC
914 N Machias Rd
5.00(
1
)
Approved Pro
10 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner.

"Intrepid did an incredible job in a time that we really had an emergency. They had our water heater diagnosed and replaced luckily within 24 hours. On top of the urgency that we needed a replacement, the price was really fair. Robert did a great job and was very friendly and professional while working at my house. They left no mess and removed the old water heater. 10/10 would use again"

Marc B on April 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner.

"Intrepid did an incredible job in a time that we really had an emergency. They had our water heater diagnosed and replaced luckily within 24 hours. On top of the urgency that we needed a replacement, the price was really fair. Robert did a great job and was very friendly and professional while working at my house. They left no mess and removed the old water heater. 10/10 would use again"

Marc B on April 2025


Avatar for Knockout Plumbing & Mechanical, LLC
Knockout Plumbing & Mechanical, LLC
1724 South Spokane Street
4.86(
7
)
Approved Pro
Knockout Plumbing & Mechanical, LLC
1724 South Spokane Street
4.86(
7
)
Approved Pro
Customers say: Quick response
11 local quotes requested
6 years of experience

Knockout Plumbing & Mechanical LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I found the leak in the attic and knew exactly where to find it. I had to let them go through my room ceiling after looking at where the burst was located. No way they could get to it any other way. Job done in an hour. Is $1k to expensive? When 1000's are experiencing the same issue? No you do what you need to do to come back online. I was happy with their business. They explained how to avoid this in the future."

Suzanne D on January 2024

Knockout Plumbing & Mechanical LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I found the leak in the attic and knew exactly where to find it. I had to let them go through my room ceiling after looking at where the burst was located. No way they could get to it any other way. Job done in an hour. Is $1k to expensive? When 1000's are experiencing the same issue? No you do what you need to do to come back online. I was happy with their business. They explained how to avoid this in the future."

Suzanne D on January 2024


Avatar for ALLIANCE PIPEWORKS, LLC
ALLIANCE PIPEWORKS, LLC
2443 N. Lafayette
5.00(
5
)
Approved Pro
ALLIANCE PIPEWORKS, LLC
2443 N. Lafayette
5.00(
5
)
Approved Pro
Free onsite estimate

ALLIANCE PIPEWORKS, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Nick came out to provide an estimate for installing a pressure reducing valve for our high water pressure. He was professional and his estimate was reasonable. He was able to fit me in the next day and came back. as promised, installed the PRV and a new box for it out near the street. It’s working great!!! Will definitely call Nick at Alliance for any future plumbing needs. . "

Heather S on May 2025

ALLIANCE PIPEWORKS, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Nick came out to provide an estimate for installing a pressure reducing valve for our high water pressure. He was professional and his estimate was reasonable. He was able to fit me in the next day and came back. as promised, installed the PRV and a new box for it out near the street. It’s working great!!! Will definitely call Nick at Alliance for any future plumbing needs. . "

Heather S on May 2025

...
Showing 1-10 of 930
The Seattle, WA homeowners’ guide to tankless water heater installations
From average costs to expert advice, get all the answers you need to get your job done.
Ceramic sink and modern tap in stylish kitchen
Jul 9, 2025
Jul 9, 2025
Need to clean your drain? Here’s how much it costs, what factors affect cost, and what to expect.
Plumber repairing water heater in the bathroom
Jun 25, 2025
Jun 25, 2025
Budget for water heater flush costs based on factors such as water heater size and type, the plumber’s experience level, related services, and more.
trench being dug to repair sewer main in backyard
Jun 21, 2025
Jun 21, 2025
Use this guide to budget for sewer line replacement costs based on factors such as location, trenching, materials, repairs, landscaping, and more.
newly remodeled bathroom with new bath tub
Jun 21, 2025
Jun 21, 2025
Budget for bathtub replacement costs based on factors such as bathtub type, material, removal, hardware, labor, plumbing work, and more.
A woman fixing cistern in bathroom
Jun 21, 2025
Jun 21, 2025
Use this guide to budget for toilet repair costs based on factors such as problem type, replacement part prices, labor, and more.
A man installs a new shower
Jun 15, 2025
Jun 15, 2025
Looking to remodel your shower? Here’s how much it costs, what factors affect cost, and what to expect.
Share project details to get started.