Triangle Tube Boilers: What Homeowners Need to Know About the 2025 Shutdown and Recall

Conor Crawford • November 6, 2025

If your home’s heating system includes a Triangle Tube boiler — such as the popular Prestige Solo or Prestige Excellence models — there are some recent and important updates you should be aware of.

Triangle Tube has ceased operations as of November 2025, and earlier this year the company announced a major recall involving certain gas boiler models due to a potential carbon-monoxide hazard.

As a result, factory support, warranty coverage, and most replacement parts are no longer available.

What Happened to Triangle Tube?

Triangle Tube was a long-standing manufacturer of high-efficiency stainless-steel boilers, widely used in hydronic heating and domestic hot-water systems. Their “Prestige” line was especially common in Marin and Sonoma County homes due to its compact size and reliability.

In early 2025, the U.S. Consumer Product Safety Commission announced a recall of several Triangle Tube models because of a potential carbon-monoxide (CO) hazard. Not long after, the company confirmed that it was winding down operations entirely, with no further production or warranty support after November 3, 2025.

According to Triangle Tube’s official notice:

“Spare parts will be made available for as long as inventory lasts. All purchases effective November 3, 2025 will have no warranty.”

What This Means for Homeowners

If you currently own a Triangle Tube boiler, don’t panic — your system can still operate safely if it’s in good condition and properly maintained. However, you should be aware of several key points:

No new parts are being produced. Once distributor inventories run out, replacement components may be difficult or impossible to source.

No factory technical support or warranty coverage. Any issues will need to be handled independently by your plumbing or heating contractor.

Future repairs may not be practical. Depending on the age and condition of your system, it may make more sense to replace the boiler before parts become unavailable.

Some models are under recall. It’s important to check your serial number to see if your boiler is affected.

How to Check if Your Boiler Is Affected

We’ve prepared a simple PDF guide with official recall details and instructions on how to check your boiler’s serial number.

👉 Download the Recall Information PDF

If you’d like assistance verifying whether your boiler is included in the recall or assessing your system’s safety, our licensed technicians can help.

Replacement Options and Next Steps

Many homeowners are now choosing to proactively replace their Triangle Tube systems with newer, supported, high-efficiency models from trusted manufacturers such as NTI, Viessmann, Lochinvar, or Navien.

Modern condensing boilers and combi-units offer:

Higher efficiency and lower energy bills

Full manufacturer support and multi-year warranties

Quieter operation and smarter control options

Easier access to parts and service

At Local Plumbing, we specialize in boiler and hydronic heating systems throughout Marin, Sonoma, and Napa counties. We can inspect your existing Triangle Tube unit, review your options, and provide a free, no-pressure replacement estimate.

Stay Safe and Supported

As a homeowner, staying informed about your heating system is key to keeping your family comfortable and safe. If your Triangle Tube boiler is affected by the recall — or if you’d simply like to ensure your system remains reliable in the years ahead — we’re here to help.

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