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Seattle Tankless Water Heater Installation & Replacement

Hot water should not run out halfway through a shower.

That is the whole reason many homeowners start looking at tankless water heaters. More hot water. Less space taken up. Better efficiency. No big storage tank sitting there heating water all day.

2 Sons Plumbing provides tankless water heater installation Seattle homeowners and businesses can count on. We also handle tankless water heater replacement, tankless water heater repair, maintenance, descaling, and emergency tankless water heater service throughout Seattle.

Already have a tankless unit that's acting up? Thinking about replacing an old tank water heater? Need help choosing the right system?

Commercial plumber working on fixture installation

47+ Years

of Commercial Experience

Seattle Tankless Water Heater Specialists

Tankless water heaters are great when they are sized, installed, and maintained correctly. But they are not one-size-fits-all. The home matters. The number of bathrooms matters. Gas line capacity matters. Venting matters. Electrical requirements matter. So does the way your family actually uses hot water.

2 Sons Plumbing has served Seattle-area homeowners since 1977. We install, repair, replace, and maintain tankless systems for homes, remodels, rentals, and businesses.

Simple goal. Reliable hot water. Clear answers. No confusing sales talk.

What We Do

Tankless Water Heater Services

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Tankless Water Heater Installation

A tankless installation takes planning. Where will the unit go? Is the gas line large enough? Does the venting need to be changed? Will the system keep up with showers, laundry, dishes, and daily use? We help you choose the right unit, install it properly, and test everything before the job is finished.

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Tankless Water Heater Replacement

If your tankless unit is old, throwing error codes, leaking, losing performance, or needing repairs too often, replacement may be the better move. We remove the old unit, install the new one, check the setup, and make sure everything is working the way it should.

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Tankless Water Heater Repair

No hot water. Error codes. Ignition trouble. Mineral scale. Reduced flow. Temperature swings. Strange noises. We inspect the system, explain the issue, and walk you through your repair options. Don't ignore small issues — they can turn into bigger repairs.

Ready to Schedule Tankless Water Heater Service?

Call 2 Sons Plumbing and Sewer and keep your hot water running at its best.

Complete Tankless Water Heater Services

2 Sons Plumbing provides complete tankless water heater service throughout Seattle for homes and businesses.

New tankless system installation
Existing tankless water heater replacement
Tankless water heater repairs
Annual maintenance and descaling
Emergency tankless water heater service

New Tankless System Installation

Installing a new tankless system is more than swapping one box for another. The system needs to be sized correctly. Gas and electrical connections need to be right. Venting needs to be safe. Water lines need to be properly connected. 2 Sons Plumbing and Sewer handles the entire installation process and makes sure everything is ready before we leave.

Existing Tankless Water Heater Replacement

Already have a tankless unit? If it is old, unreliable, or no longer meeting your hot water needs, we can help. A newer tankless unit may provide better performance, improved efficiency, and more reliable hot water. We can also discuss options like a Navien tankless water heater, depending on your home's needs and plumbing system.

Annual Maintenance & Descaling

Scale buildup can affect performance over time. Annual maintenance and descaling help protect the system, improve efficiency, and reduce the chance of unexpected breakdowns. Maintenance may include flushing the system, cleaning filters, checking connections, testing operation, and looking for early signs of wear.

Emergency Tankless Water Heater Service

No hot water can be urgent, especially if the unit is leaking, showing error codes, or serving a busy household or business. 2 Sons Plumbing and Sewer provides emergency tankless water heater service throughout Seattle. Call (253) 362-0946 if your tankless system suddenly stops working.

Why Choose 2 Sons Plumbing

Dependable workmanship, honest recommendations, and projects completed correctly the first time.

Serving Seattle Area Homeowners Since 1977

2 Sons Plumbing and Sewer has served Seattle-area homeowners since 1977. We understand older homes, remodeled properties, tight utility spaces, and the hot water demands of busy households throughout the Seattle area.

Licensed & Experienced Plumbers

Our licensed plumbers install, repair, replace, and maintain tankless water heaters throughout Seattle. We also work with gas lines, venting systems, plumbing connections, and complete water heater installations.

Upfront Pricing

Nobody likes surprise pricing. 2 Sons Plumbing and Sewer provides upfront pricing before work begins, so you'll know exactly what we recommend and what it will cost before making a decision.

Quality Workmanship

Tankless water heater installations require careful planning and attention to detail. We focus on proper sizing, safe installation, quality workmanship, and reliable long-term performance.

Areas We Serve Throughout Seattle

2 Sons Plumbing provides tankless water heater services throughout Seattle.

Ballard

From historic buildings to modern commercial developments, our team has the experience to handle plumbing challenges throughout the region.

Queen Anne

Queen Anne has historic homes, condos, hillside properties, and commercial buildings. Some homes have limited installation space or older plumbing that should be evaluated before converting to tankless.

Capitol Hill

Capitol Hill includes apartments, restaurants, offices, older homes, and mixed-use buildings. Hot water demand is often higher in these properties, especially in commercial or multi-unit buildings.

West Seattle

West Seattle has older homes, remodeled properties, rentals, businesses, and newer construction. Tankless systems can save valuable space while providing reliable hot water for today's households.

Green Lake

Green Lake homes often combine older plumbing with modern remodels and compact utility spaces. 2 Sons Plumbing and Sewer helps Green Lake homeowners with tankless repairs, descaling, maintenance, replacement planning, and new installations.

Northgate

Northgate includes homes, apartments, retail spaces, and commercial properties. Whether you need annual maintenance, repairs, or a complete tankless water heater replacement, our team provides service throughout Northgate.

Frequently Asked Questions

How much does tankless water heater installation cost in Seattle?
Is a tankless water heater worth it?
How long do tankless water heaters last?
Do tankless water heaters require maintenance?
Can a tankless water heater supply an entire house?
What size tankless water heater do I need?
How often should a tankless water heater be serviced?
Can you replace my existing tank water heater with a tankless unit?

Schedule Tankless Water Heater Service Today

Need tankless water heater installation in Seattle? We install, repair, replace, and maintain tankless water heaters throughout Seattle.

No hot water. Error codes. Scale buildup. Replacement planning. New installation. Whatever is going on,  2 Sons Plumbing can help you get it figured out.

Available for emergency service throughout Seattle