Tankless Water Heater Installation Services in Bellingham

Integrity is at the heart of everything we do at Andgar Home Comfort.

Book your tankless water heater replacement today and enjoy:

• High-efficiency systems from Navien and Rinnai
• Excellent financing opportunities through our partners
• Free installation estimates and second opinions

Why Choose Andgar

A Reputation for Integrity Nine Decades in the Making

Considering a tankless water heater? Andgar Home Comfort offers free in-home estimates and second opinions. We install the very best of the best systems from AO Smith, Rinnai, and Navien, and every installation includes a 1-year workmanship guarantee on top of the registered manufacturer warranty. Andgar Home Comfort has a 4.9 rating on Google and more than 1,000 five-star reviews from homeowners across Bellingham.

• 4.9/5 Google My Business Reviews (GMB)
• Top 1% Licensed Contractors in WA (BuildZoom)
• A+ Accredited Business (Better Business Bureau)
• 96% Recommend Andgar (Facebook)

How Much Does a Tankless Water Heater Replacement Cost in Bellingham?

Prices Starting at: $5,500

What factors affect the cost of a tankless water heater replacement?

Flow rate sizing: The flow rate your household needs may affect the overall price of installation. We help you choose a unit sized to your household's hot water demand, so you don't pay for more capacity than you need.

Gas line capacity: Whether your home's existing gas line can support the new unit may affect the price of installation. We check your gas line capacity ahead of time, so any needed adjustments are identified before work begins.

Venting system installation: The venting your new tankless water heater requires may affect the overall price. We plan the venting route for your specific home, so the installation is done correctly the first time.

Makes and Models

Your Full-Service Plumber in Bellingham

A typical plumbing job often requires an understanding of fixtures, pipes, drains, and major home appliances. Not every plumber in Bellingham knows how to navigate these systems, and few have experience with more than a handful of manufacturers.

Andgar Home Comfort is different. Our experts are experienced plumbers who work with all major brands. If you want the job done right the first time, you can’t go wrong with Andgar.

Expert Plumbing Repairs & Installs

The Best-Trained Plumbers in Bellingham

Did you know that Andgar Home Comfort has our own training academy? It’s called Andgar University, and it helps ensure the highest quality training for our plumbers.

What’s more, every one of our plumbers is licensed to operate under the Washington State Department of Labor and Industries. We also have Journeyman Plumbers who have logged over 8,000 hours of on-the-job experience.

The end result is a repair that’s performed faster and lasts longer. If you want the job done right the first time, call Andgar Home Comfort today.

Flexible Financing

Enjoy Comfort Now, Pay Over Time

A new system does not have to mean paying the full cost all at once. Flexible financing options let you get the comfort your home needs today, with a payment plan that fits your budget.

Help Center

Tankless Water Heater Installation Help Center

Tankless Water Heater Installation Frequently Asked Questions

How do I know if I need a new tankless water heater instead of a repair?

A few signs can point toward replacement, including a unit that's reached the end of its expected lifespan, one that needs frequent repairs, or one that can no longer keep up with your household's hot water demand. A qualified technician can help you weigh the cost of continued repairs against the benefits of a new, more reliable unit.

Andgar Home Comfort technicians diagnose the real issue with your tankless water heater and give you an honest recommendation based on what they find. We never push a replacement when a repair will do the job.

What size tankless water heater does my household need?

The right size depends on your household's flow rate needs, including how many fixtures may run hot water at the same time and how much hot water your household typically uses. Choosing a unit that's undersized can lead to inconsistent hot water, while an oversized unit may cost more than necessary.

Andgar Home Comfort helps you choose a unit sized to your household's hot water demand, so you don't pay for more capacity than you need. We walk through your household's needs together before recommending a system.

Will my home need any gas line changes to install a tankless water heater?

Some homes need gas line adjustments to support a new tankless water heater, since these units can require more gas flow than a traditional tank system. Whether changes are needed depends on your home's existing gas line and the specific unit you choose.

Andgar Home Comfort checks your gas line capacity ahead of time, so any needed adjustments are identified before work begins. This helps avoid surprises once the installation is underway.

Does a tankless water heater installation require special venting?

Yes, tankless water heaters typically require venting designed for the specific unit and fuel type you choose. The right venting route depends on where the unit is installed and how your home is laid out, which can vary from one home to the next.

Andgar Home Comfort plans the venting route for your specific home, so the installation is done correctly the first time. This helps your new system operate safely and efficiently from day one.

Our Service Area

Serving Whatcom, Skagit, and North Snohomish Counties

Service Available 24/7

We are available 24/7 (even holidays!) for all of your emergency HVAC and plumbing needs.

Office Hours

Mon – Fri: 8:00 AM – 4:30 PM

Closed Saturday and Sunday

Anacortes, Arlington, Bellingham, Blaine, Bow, Burlington, Concrete, Custer, Deming, Ferndale, Glacier, La Conner, Lummi Island, Lynden, Mount Vernon, Orcas Island, Point Roberts, Sedro-Woolley

Contact Us

Home Service with Heart

24/7 Service | Free Estimates | Fair Pricing