A recall of 4,726 gas boilers warns of fire and carbon monoxide, and a technician’s jaw was broken

A federal recall covers 4,726 NTI and HTP gas boilers sold in the United States, and the reason is a cracked part that can let unburned gas collect inside a sealed cabinet. If that gas ignites, the front cover can come off. The Consumer Product Safety Commission announced the action on October 29 as recall 27-051.

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Ariston, the manufacturer formerly known as NTI Boilers, reported one incident in which the technician servicing a unit suffered a broken jaw. The same recall covers another 2,261 boilers sold in Canada, and the fix is a free repair, not a replacement.

A cracked condensate dish and a flying front cover

According to the CPSC recall notice, the condensate dish can crack during a delayed ignition, which lets unburned gas build up in the sealed cabinet. Ignition of that gas can detach the front cover, producing fire, carbon monoxide and impact risks, and the commission warns of serious injury or death from all three.

Ariston has received 34 reports of the condensate dish breaking, including three reports of the front cover detaching. In the one reported injury, the technician servicing the boiler sustained a broken jaw. The recall notice does not list any deaths or any carbon monoxide poisonings among the reports.

The mechanism matters for owners deciding how worried to be. A delayed ignition is a burner that fails to light on schedule while gas keeps flowing, and the resulting pressure event is what the commission says can crack the dish. With the cabinet sealed, the escaped gas has nowhere to go, so a later spark can push the cover off the unit. A cover that detaches under pressure is the impact hazard, and combustion gases released into a mechanical room are the carbon monoxide hazard.

Which NTI and HTP models are covered

The affected NTI units are the gray FTVN150, FTVN150C, FTVN199, FTVN199C, TFTN150 and TFTN199 series. The HTP units are the black Elite Fire Tube Ultra EFTU-150WBN, EFTU-150WCN, EFTU-199WBN and EFTU-199WCN models. Each is a metal, rectangular unit with NTI or HTP printed on the front, and the model and serial number sit on the rating plate on the left-hand side.

An NTI FTVN150, for example, falls in the recall if its serial number runs from 2107072138176723 to 2110052238206421 or from 3260054C8222970000170 to 3260054C8230380000090, and the other models have comparable pairs of ranges. Serial numbers decide who is covered, and each model has its own range listed in the notice. One of the listed HTP ranges, for the EFTU-199WCN, appears to contain an error in its printed numbers, so owners with that model should confirm with the company. The boilers were sold through independent heating and plumbing contractors and wholesale distributors nationwide from May 2021 through July 2026 for about $3,200 to $7,700.

NTI’s own safety recall page lists an October 2026 FTVN and TFTN recall covering about 6,329 boilers made between June 14, 2021, and March 20, 2023, and says the repair kit must be installed as soon as possible. HTP owners are pointed to the company’s safety notice page.

The recall also reaches Canada, where 2,261 units were sold and where Health Canada issued its own notice the same week. Ariston’s contractors and wholesale distributors, not retail stores, were the sales channel in both countries, which means many owners never dealt with the company directly. A homeowner may know the boiler only as the gray or black unit in the basement that a heating contractor installed, so checking the rating plate on the left side is the practical first step.

The reported failure rate is low but not trivial. The notice does not split the 34 broken-dish reports by country, and set against the 6,987 units sold in the United States and Canada, 34 reports is about half of one percent. The three front covers that detached are the cases that matter most, because each one is the point where a cracked dish turned into an impact and fire hazard, and the single broken jaw shows what a detaching cover can do to a person standing next to the unit during service. Sales ran more than five years, from May 2021 through July 2026, which is why the serial ranges in the notice are so numerous and why a boiler installed in a recent renovation may be covered alongside one from the early part of the window. Prices of about $3,200 to $7,700 put these units in the range of a full replacement project, and the free repair is meant to spare owners that cost.

The repair and who to call

Owners are told to stop using the boiler and contact Ariston to schedule a certified technician for the free repair. A household that cannot go without heat in the meantime should keep working smoke and carbon monoxide alarms installed, according to the notice. Ariston takes calls at 800-688-2575 from 7 a.m. to 8 p.m. Eastern time, Monday through Friday, and answers email at [email protected]. The manufacturer is Ariston Canada Inc., formerly NTI Boilers Inc., and the importer is Ariston Thermo USA LLC of Providence, Rhode Island. The units were built in Canada. Anyone who has had a boiler incident can report it to the commission through SaferProducts.gov, the federal database for consumer product harms.

NTI has faced a boiler recall before. A June 5, 2025 commission recall covered about 323 TRX Series II boilers in the United States, where incorrect burner door studs could let flames and gases escape. The current action is far larger, and the number to watch is how many of the 6,987 boilers across the two countries get the repair before the heating season peaks.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.

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