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Tankless Water Heater Installation Repair Services Seattle, WA

Tankless Water Heaters

over 4481 reviews

Tankless Water Heater System Services in Seattle, WA

Are you looking for a new type of water heater? Call 206.792.7495 today for expert Seattle tankless water heater installation and repair and honest pricing. For many homeowners who try a tankless system, it’s the only way to go.

As the name suggests, tankless water heaters operate without a traditional hot water tank. There is no tank placed in your basement, because a heating element is connected directly to the plumbing system. When anyone in your household turns on a hot water faucet, you get hot water until you don’t need it anymore. Tankless systems are also called on demand water heaters because of this feature. The individual faucets receive the hot water when it’s needed, which makes for a much more enjoyable situation for people inside the house.

If you’re ready for instant hot water whenever you want it, Gene Johnson can help you set it up! Give us a call to speak with a knowledgeable member of our team about all the expert tankless water heater services we provide!

Our Tankless Water Heater Services for Seattle Homeowners

At Gene Johnson, we make sure Seattle homeowners always have hot water on demand. Whether you need a quick repair, a fresh installation, or a full system replacement, our experts are here to deliver dependable service.

Tankless Water Heater Repair

When your tankless system starts acting up, we’re ready to step in with reliable, fast repairs that keep your home comfortable.

Common tankless water heater issues we fix in Seattle, WA:

  • Fluctuating water temperatures caused by clogged filters or mineral buildup in the system.
  • Ignition problems that prevent your tankless heater from firing up when hot water is needed.
  • Burner or heating element malfunctions leading to lukewarm water during showers.
  • Blocked or dirty air supply vents reducing performance and efficiency.
  • Corroded or leaking water lines connected to the tankless unit.
  • Error codes displayed on the digital panel that indicate underlying mechanical issues.
  • Scale buildup inside the heat exchanger reducing water flow and heat transfer.
  • Gas or electrical connection problems preventing the system from operating correctly.

When you call us for tankless water heater repair, we respond quickly and provide clear solutions so you can get back to enjoying endless hot water without stress.

Tankless Water Heater Installation and Replacement

If your old water heater is giving you trouble, upgrading to a tankless system can transform your daily routine with dependable, energy-saving performance.

Systems We Install

We install top-quality tankless water heaters designed for Seattle’s climate and household demands. From compact electric models to powerful gas-fired units, we’ll help you choose the right size and brand for your family. Our installations are tailored to your home’s plumbing system so you get the maximum performance, efficiency, and comfort possible.

Our Tankless System Installation Process

  • We assess your current hot water needs and recommend the right size and type of system.
  • We safely remove your old water heater and prepare the space for your new unit.
  • We install new water and gas or electric connections as required for the tankless unit.
  • We set up the venting system and calibrate the equipment for peak efficiency.
  • We fully test your new system and walk you through how to use and maintain it.

Trust Gene Johnson with your traditional water heater services too!

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Diagnostics And Consultations On HVAC Systems

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*Diagnostic or repair services are not included. This is a no-obligation consultation for homeowners interested in upgrading or replacing their HVAC and/or heating systems. Offer applies to residential properties only and must be scheduled during normal business hours.

Why Is My Tankless Water Heater Not Providing Consistent Hot Water?

Inconsistent hot water can happen for a few reasons. Mineral buildup in the heat exchanger, blocked filters, or low water flow are common culprits. In some cases, the system may be undersized for your household’s demand. A technician can:

  • Clean or replace clogged filters
  • Flush out scale buildup from the heat exchanger
  • Check the gas pressure or electrical supply
  • Inspect the venting and airflow system

When these parts are serviced, your system usually returns to normal operation. If the unit is too small for your family’s needs, we may recommend upgrading to a larger-capacity model.

What Should I Do If My Tankless Water Heater Displays an Error Code?

Error codes are the system’s way of telling you something is wrong. These codes can mean anything from ignition failure to venting problems. First, reset the system to see if it clears. If it returns, it’s best to call for service. A professional will:

  • Interpret the error code correctly for your model
  • Inspect electrical or gas connections
  • Clean sensors and filters
  • Replace faulty components if needed

Addressing error codes quickly helps you avoid bigger issues and costly breakdowns. Never ignore them, especially if your unit shuts off during operation.

How Can I Prevent Costly Repairs on My Tankless Water Heater?

Preventive maintenance is the key to keeping your tankless system working for years. At minimum, schedule annual professional service. During this visit, a technician will:

  • Flush the unit to remove scale and mineral deposits
  • Clean filters and sensors for proper operation
  • Inspect gas or electrical connections
  • Test water pressure and temperature settings
  • Check for leaks or corrosion around connections

These steps reduce strain on the unit and prevent surprise breakdowns. With consistent maintenance, many tankless systems last 20 years or more.

How Long Does It Take to Replace a Traditional Water Heater With a Tankless System?

The timeline depends on your home’s setup, but most replacements are done in a single day. If gas lines, venting, or electrical upgrades are needed, it might take a little longer. Typically, the process involves disconnecting and removing your old tank, installing new hookups, mounting the tankless unit, and testing the system.

Our team works efficiently so your household experiences as little downtime as possible. Most families are enjoying unlimited hot water by the evening of installation day.

What Are the Biggest Benefits of Replacing My Old Tank With a Tankless Water Heater?


Replacing a traditional tank-style water heater with a tankless unit offers multiple long-term benefits:

  • Endless hot water for back-to-back showers and multiple appliances
  • Lower monthly energy bills because water is heated only on demand
  • Space savings since tankless models are compact and wall-mounted
  • Longer lifespan, with many units lasting 20 years or more
  • Improved safety since there’s no large tank that could leak or burst

This switch is especially valuable for busy households in Seattle, where demand for hot water can be high.

Contact Gene Johnson Plumbers for Professional Tankless Water Heater Services in Seattle, WA, Today!

If you’re ready to enjoy the comfort and convenience of unlimited hot water, the team at Gene Johnson Heating, Cooling, Plumbing, and Electrical is here to help. We provide expert tankless water heater repair, installation, and replacement services designed to make life easier for Seattle families. Our technicians bring years of hands-on experience and always put your satisfaction first.

Give us a call today at 206.792.7495, and we’ll schedule a convenient appointment to show you exactly how a tankless water heater can benefit your home. Reliable service is just one phone call away.

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Within Your Budget

The best plumbing, cooling, heating, and electrical services shouldn’t have to break the bank. That’s why we are happy to provide our customers with opportunities to save on their next service with us. Our current online deals are updated periodically, so there is something for everyone, whether you are a first-time customer or a long-time loyalist.

Here are some benefits of trusting Gene Johnson with your HVAC, Plumbing, and Electrical needs.
  • Best value service in Seattle
  • Always on-time arrival
  • No mess left after a job
  • Friendly team that truly cares about your safety and comfort
  • Fixed right guarantee
  • Upfront pricing
  • Follow up calls to ensure your peace of mind
  • Range of service options- no ultimatums!

Total reviews: 4481 | Average rating: 4.8

5

Mathew Hunter was very detailed and explained very clearly about our system. He took time to show us the issues and what needed to be done . He was above and beyond!!! We can highly recommend Mathew Hunt. He did a great job for us!!

5

Jaren did a fabulous job and went above and beyond to make sure my toilets would be functional for the time period I need. He also kept me informed as to what he was doing and what the situation he was dealing with.

5

Mike P did a great job snaking and repairing a tricky kitchen drain. Would definitely hire Gene Johnson again.

5

Jaren Larson and Colton Todd came to the house. Jaren expertly cleared a blockage, and Colton ran a visual diagnostic to show the state of the line between the house and main and went over options for upgrading. Excellent execution and communication by both men.

5

Throughout our project Andrew was willing to do the little (and big) things to make sure everything was done right. There were a few unexpected challenges once he got started and he did a great job of explaining the options to us and doing the right thing, even when it meant more time and effort. We feel confident that everything was done to a high standard.

5

Rory, Eugene, and Tyler did an outstanding job replacing a water line for us. They were professional, knowledgeable, and they clearly explained everything that needed to be done. They completed the project, solving our leak problem in a very timely manner. The communication by the entire team was excellent. I highly recommend Rory, Eugene, Tyler and the entire Gene Johnson team.

5

Jaren replaced my aged water heater very efficiently. I know it was a hard job and I appreciated his knowledge as he explained what needed to be done. I will definitely call again when needed. Thanks Jaren

5

Armando did an excellent job fixing the pipe that had roots stuck in it, which had prevented us from using both of our toilets. He communicated clearly and thoroughly about what he was doing from start to finish. He completed the entire job in just one day, allowing us to regain full toilet access. I highly recommend Gene Johnson Johnson 100%! Thank you, Armando, for doing such a wonderful job!

5

Joe was awesome, super knowledgeable and helpful!

5

Darius came out today to deal with our toilet repair issue. This company has great communication, quick response time, and although I was not expecting a repair expense at this time I felt it was a fair price for what was needed. Darius is courteous, professional and just a fantastic person. Very respectful of our place, fixed what was needed and left it clean and tidy. This is the second time I needed Gene Johnson Plumbing for our house and I highly recommend them for yours. Cheers.

5

Today, technician Marco Ochoa came to perform the annual water and plumbing inspection and to flush the water tank. He took pictures and provided recommendations along with estimates. Very courteous and thorough!

5

Pavel was so helpful trouble shooting old exterior spigots today. He explained the details to me was efficient and friendly. I appreciate the quick scheduling also!!

5

Armando was professional and diligent in finding the source of our plugged drain. I would highly recommend him. Thank you!!

5

Amazing service today. Not only did Hugo get the job (an ice maker line installation) done well, he went above and beyond cleaning and making sure everything was perfect. He also had a smile the whole time and a great sense of humor.

5

Service was timely, efficient, and well communicated. Out technician, Mark Ochoa was polite, knowledgeable, friendly, and got the job done well. We consistently only call Gene Johnson for our plumbing issues and have recommended them to others including my mom.

5

Hugo fixed a leaky wax ring at my house and was very knowledgable! He helped me winterize my hose spigot and provided me info about how to close the water main for the house which i had been wondering about!

5

Gene Johnson is always top notch. Recently, I called them in for a second opinion after a competitor couldn’t clear our drains and told us to spend $15k to dig up the wrong part of the yard. In contrast, Mark Ochoa and Colton cleared the backup, investigated throughly to find the actual problem, walked us through videos to make we understood, and provided two options along with detailed quotes. They’re great and I’ll never cheat on them again.

5

They are very efficient, hardworking and completed the job as planned. They offered 60 mo no interest finance too.

5

Mike Pierce was extremely professional and did a wonderful job. I highly recommend him and Gene Johnson plumbing. Problem resolved!!

5

Sean was top notch. He made the necessary repairs. Professional and communicated everything he was doing. Highly recommend Sean and this company. Nice work.