Introducing the Cardinal

The Cardinal tank is a stainless steel indirect water heater featuring top DHW connections, 1" boiler connections and is available in multiple sizes to ensure ample hot water. Paired with our Peace of Mind Warranty Program, this stainless steel indirect water heater is ready for any residential or commercial application.

The Original Innovators

How To Find Your Serial Number

How To Find Your Serial Number


“How-To” Video Support


Your Good - Better - Best Warranty

Your Good – Better – Best Warranty


Energy-Saving Rebates in your area

Energy-Saving Rebates in your area


Your Triangle Tube Academy Training

Tech Support

Our Technical Support Team is here to service you and your customers’ needs. The Triangle Tube Technical Support line 856.228.8881 ext: 575 will be available:

Phone support hours:

Monday-Friday: 8am – 7pm EST

For assistance after these hours please email [email protected]

PRODUCT RECALL INFORMATION 

An update on COVID-19

Our priority now, as it always has been, is the safety of our customer and employees.  Please see our statement here.

As we keep a close watch on emerging cases of COVID-19, Triangle Tube is taking every precaution to deal as safely as possible and ensure an uninterrupted supply of products and services to our customers.  Our staff is available by phone and email.   Keep in mind you may find the answers you need here on our website.
 

Products Offering Peace of Mind Industry-Leading Three Point (Good / Better / Best) Warranty Program

Instinct Solo

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This high efficiency line of heat only products is now available in both Floor Standing and Wall Mounted options, featuring elements such as a Low loss header, Wi-Fi connectivity and Stainless Steel Fire tube heat exchanger.

Wall Mount Learn More
Floor Standing Learn More

Instinct Combi

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This high efficiency line of combi products is now available in both Floor Standing and Wall Mounted options, featuring elements such as a Low loss header, Wi-Fi connectivity and 5+ GPM of DHW.

Wall Mount Learn More
Floor Standing Learn More

Pestige Solo Condensing Boiler

Prestige Solo

Pestige Solo Condensing Boiler Icon

High efficiency wall mounted gas condensing boiler. 95% energy efficient. Available in a broad range from 80 to 399 MBTU.

Learn More

Prestige Solo Condensing Boiler

Prestige Excellence

Pestige Solo Condensing Boiler Icon

High efficiency wall mounted gas condensing boiler. 95% energy efficient. Available in a broad range from 80 to 399 MBTU.

Learn More

Smart 316 Indirect Water Heater

Smart 316

Smart 316 Indirect Water Heater Icon

Smart 316 is upgraded to 316L stainless steel inner tank-acid pickling for increased corrosion resistance, state-of-the-art welding procedures & improved dry well testing for longer life.

Learn More

We Have Great News!

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Products You Can Trust

Triangle Tube is the leader in heating and hot water in North America. Don’t take our word for it! Check out some of our installation testimonials and see why we’re the trusted resource.