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Tankless Water Heater Installation Repair Services Seattle, WA

Tankless Water Heater Services in Seattle, WA

over 4494 reviews

Our Tankless Water Heater System Services for Seattle Homeowners

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: 4494 | Average rating: 4.8

5

Mark was a pro. He went through all the options for repair and replacement and worked up quotes for each. I’m really happy with the install and overall experience.

5

Noah came out today and replaced all the plumbing under my bathroom sink. He was very friendly and professional, and he did a great job, and he was fast. We will gladly use their services again.

5

Jaren was great! Fixed our clog in record speed and even gave our pups some extra pets! I’ll be using Gene Johnson again for sure!

5

Gene Johnson is always our go to! Timely, friendly and always educational. Stephen was our tech this time around and he was superb. Love them.

5

Mark Ochoa was very efficient and helpful unclogging a stubborn kitchen sink. He kept me informed on what the issue was (a clog that had moved outside of my house further into the line) and how things were proceeding. He also provided education on how I could to try to prevent future issues and answered my questions thoroughly. Would definitely recommend him to others!

5

Hugo was excellent, on time, friendly, helpful.

5

We had a great experience with Gene Johnson Plumbing and Jaren in particular. He was knowledgeable, kind, and went above and beyond to make sure the job was done right. Everything was explained up front and we were offered multiple options. In the end the work was expertly done and we’re very happy, would definitely recommend.

5

Had great service from Jalen and really appreciate that they fit my project in during the busy holiday season. Super professional and accommodating – would recommend!

5

Armando came within 30 minutes of my call in a Saturday and unplugged my sink in no time.

5

Gene Johnson came to the rescue when we had a pipe burst within our wall. Our technician Jeff Freeman was absolutely amazing! He went above and beyond and did a fantastic job diagnosing the leak, promptly repairing the leak, helping start water damage remediation and finishing the job. He was professional, courteous, knowledgeable and easy to work with. Highly recommend!

5

Great plumbing service by our plumber Darius Cunningham.

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!