NTI Gas Boiler Recall | 2026 Latest Updates

NTI Boilers Inc., of Canada, and the U.S. Consumer Product Safety Commission, working with Health Canada, recalled certain NTI-brand gas boilers on June 5, 2025. The recall covers models TRX150, TRX199 and TRX199C – roughly 323 units in the U.S. and another 459 in Canada. The boilers can develop loose burner-door studs that let the door fail to seal, releasing flames and gases. This is a fire and carbon monoxide poisoning hazard reported to two national agencies. The recall remains open. Anyone with an affected boiler should stop using it immediately and contact NTI Boilers or their installer for a free repair kit.

Latest NTI Gas Boilers Recall Updates

June 5, 2025: CPSC and Health Canada Announce Recall

The CPSC and Health Canada announced a recall of NTI TRX Series II gas boilers, effective June 5, 2025 [1, 2]. About 323 units were sold in the United States and 459 in Canada. The agencies found that burner-door studs can loosen, letting the door fail to seal and posing fire and carbon monoxide poisoning risks. NTI Boilers is providing free repair kits installed by a certified technician.

Which NTI Gas Boilers Are Affected?

NTI Boilers Inc. recalled three models of NTI-brand TRX Series II wall-hung gas boilers. The model name, model number and serial number are printed on the rating plate on the left-hand side of each unit:

• TRX Series II TRX150, model number 3314306C8, serial numbers 242830000177 through 250130000073
• TRX Series II TRX199, model number 3314307C8, serial numbers 242740000006 through 250220000014
• TRX Series II TRX199C, model number 3314308C8, serial numbers 242750000127 through 250410000051

The recalled boilers were sold through independent heating and plumbing contractors and wholesale distributors nationwide. The sale period ran from September 2024 through February 2025, for between $3,400 and $4,100. Owners who cannot find the rating plate should contact NTI Boilers directly for help. This also applies to anyone unsure whether their serial number falls within a listed range.

Why Were the NTI Gas Boilers Recalled?

The NTI gas boilers were recalled because the studs that secure the burner door to the heat exchanger housing can come loose over time. When a stud loosens, the door can fail to seal completely, letting flames and combustion gases escape into the surrounding air. Escaping combustion gases raise the risk of fire and carbon monoxide poisoning, which can cause serious injury or death if the leak goes undetected. The defect can develop gradually as the studs work loose during normal use. The hazard affects only the three TRX Series II models with serial numbers inside the recalled ranges. Boilers outside those ranges, or other NTI product lines, are not part of this action.

Reported Incidents, Injuries, or Illnesses

As of April 24, 2025, NTI Boilers had received one reported incident in Canada, with no injury, per the same Health Canada notice. In the United States, the company received no reports of incidents or injuries. These figures reflect reports NTI Boilers received from consumers about the burner-door defect and may not capture every incident. Reports are not proof that a recalled boiler caused every incident. The same burner-door defect behind this recall means a leak can develop without warning, so anyone who experienced a fire, burn, or carbon monoxide exposure involving a recalled boiler should report it to NTI Boilers and to the CPSC.

What Should Consumers Do?

Owners of a recalled NTI boiler should take the following steps right away to reduce the fire and carbon monoxide risk while a free repair is arranged:

1. Stop using the boiler immediately and do not attempt to repair it yourself.
2. Contact your installer, or NTI Boilers directly, to arrange a free repair kit (part #4270278) installed by a certified technician, per NTI’s own recall notice [3].
3. If the boiler must stay in service to avoid freezing, run it only with the front cover on and a working carbon monoxide detector in both the boiler room and the living space.
4. Call NTI Boilers toll-free at 800-688-2575, Monday through Friday, or email recall@ntiboilers.com.
5. Report any carbon monoxide or product-safety concern to the CPSC at SaferProducts.gov or 800-638-2772.
6. Watch for headache, dizziness, confusion or nausea near the boiler. The EPA says these symptoms often clear up after leaving the area, so treat them as a sign to get outside right away [4].

Other Recalls, Warnings, or International Actions

On the same day, June 5, 2025, the CPSC and Health Canada also recalled HTP-brand ELU Elite Ultra wall-hung gas boilers. The models are ELU-150WBN and ELU-199WBN, per the CPSC’s HTP recall notice [5]. That action, recall number 25-325, covered about 96 units in the United States and 9 in Canada. NTI Boilers Inc. makes both lines. Owners of an affected HTP boiler should see the HTP gas boiler recall page for repair details.

Frequently Asked Questions

What Are the Symptoms of Carbon Monoxide Poisoning?

The symptoms of carbon monoxide poisoning include headache, dizziness, confusion, nausea, and impaired vision and coordination, and they can bring flu-like symptoms that clear up after leaving the area. The EPA says exposure is fatal at very high concentrations.

What Is the NTI Gas Boiler Recall Number?

The NTI gas boiler recall is CPSC Fast Track Recall Number 25-326, announced jointly with Health Canada. NTI Boilers also arranged for wholesalers to return any unsold, recalled stock to the company for rework rather than sell it.

Can I Keep Using My NTI Boiler While I Wait for the Repair?

Owners should not keep using an NTI boiler while waiting for the repair unless it must stay in service to avoid freezing pipes. In that case, follow the front-cover and carbon-monoxide-detector rule the numbered steps above describe.

Is the NTI Gas Boiler Recall Still Active?

Yes, the NTI gas boiler recall remains active. As of September 25, 2026, neither the CPSC nor Health Canada had posted a closure or expansion notice, and Health Canada’s alert still showed the original announcement date as its last update.

How Can I Reduce the Risk of Carbon Monoxide Poisoning at Home?

You can reduce the risk of carbon monoxide poisoning at home. Install alarms on every level, outside each sleeping area, and have fuel-burning appliances like boilers professionally inspected every year, as the CPSC recommends. These steps can catch a leak before symptoms like headache or dizziness develop.

What Carbon Monoxide Level Is Considered Dangerous?

Carbon monoxide is dangerous long before you can smell or see it. OSHA sets a workplace limit of 50 parts per million over 8 hours, and NIOSH recommends no more than 35. A recalled NTI boiler’s loosened burner-door stud can let combustion gases escape well above those levels.

References

1. https://www.cpsc.gov/Recalls/2025/NTI-Brand-Boilers-Recalled-Due-to-Fire-and-Carbon-Monoxide-CO-Poisoning-Hazards-and-Risk-of-Serious-Injury-or-Death-Made-by-NTI-Boilers
2. https://recalls-rappels.canada.ca/en/alert-recall/nti-trx-series-ii-wall-hung-gas-fired-boiler-recalled-due-risk-fire-and-carbon
3. https://ntiboilers.com/trx-safety-recall
4. https://www.epa.gov/indoor-air-quality-iaq/carbon-monoxides-impact-indoor-air-quality
5. https://www.cpsc.gov/Recalls/2025/HTP-Brand-Boilers-Recalled-Due-to-Fire-and-Carbon-Monoxide-Poisoning-Hazards-and-Risk-of-Serious-Injury-or-Death-Made-by-NTI-Boilers