If you have an NTI or HTP gas boiler heating your home, the model and serial number on that unit now matter more than usual. The U.S. Consumer Product Safety Commission says about 4,726 NTI FTVN and TFTN series boilers and HTP EFTU (Elite Fire Tube Ultra) boilers, manufactured by Ariston, formerly NTI Boilers, have been recalled because a part inside the unit can crack and let unburned gas build up in the sealed cabinet, risking fire, carbon monoxide exposure and a front cover that can suddenly detach. Before you lean on that boiler for the coldest months, it is worth five minutes to check whether yours is one of the recalled units. NTI and HTP Brand Gas Boilers Recalled Due to Risk of Serious Injury or Death from Fire, Carbon Monoxide (CO) Poisoning and Impact Hazards;
Which boilers are covered: the recall applies to NTI brand residential gas boilers in the FTVN and TFTN model series, which are gray, and HTP brand residential gas boilers in the EFTU series, which are black. Both are rectangular metal units with either NTI or HTP printed on the front. The model and serial number are on the rating plate located on the left-hand side of the boiler, which is the information you will need before calling the manufacturer. According to the CPSC notice, the recalled units were sold nationwide through independent heating and plumbing contractors and wholesale distributors from May 2021 through July 2026, at prices between $3,200 and $7,700, so this covers boilers installed within roughly the last five years, not decades-old equipment. NTI and HTP Brand Gas Boilers Recalled Due to Risk of Serious Injury or Death from Fire, Carbon Monoxide (CO) Poisoning and Impact Hazards;
What actually fails inside the FTVN, TFTN and EFTU units
The hazard described in the recall is specific: a condensate dish inside the boiler can crack during what the CPSC calls a delayed ignition. Once that dish cracks, unburned gas can collect inside the sealed cabinet instead of venting as designed. If that trapped gas ignites, the pressure can force the front cover off the unit suddenly. That combination is why the CPSC lists three separate hazards for the same defect: fire from the ignition itself, carbon monoxide poisoning if combustion gases escape into the living space, and impact injury from a cover that detaches with force. This is not a slow leak you would notice over weeks; it is tied to a specific ignition event in the boiler’s normal operating cycle. NTI and HTP Brand Gas Boilers Recalled Due to Risk of Serious Injury or Death from Fire, Carbon Monoxide (CO) Poisoning and Impact Hazards;
The incident history behind the recall
Ariston has received 34 reported incidents of the condensate dish breaking, including three reports in which the front cover actually detached from the boiler, per the CPSC. In one of those incidents, a technician servicing the unit sustained a broken jaw. No deaths have been reported in connection with this recall, but the agency’s language, serious injury or death from fire, carbon monoxide poisoning and impact hazards, reflects the range of outcomes the defect can produce, not a worst-case exaggeration. Thirty-four confirmed incidents against roughly 4,726 units sold domestically is a low percentage, but the severity of a cover detaching under pressure is why the CPSC and Ariston moved to a full repair remedy rather than a parts shipment or a warning label. NTI and HTP Brand Gas Boilers Recalled Due to Risk of Serious Injury or Death from Fire, Carbon Monoxide (CO) Poisoning and Impact Hazards;
The free repair through Ariston
The remedy is a scheduled repair, not a refund or replacement unit. Consumers should stop using the recalled boiler immediately and contact Ariston to schedule a free repair performed by a certified technician; do not attempt a do-it-yourself fix given that this involves gas combustion components and a sealed cabinet. Ariston can be reached at 800-688-2575 from 7 a.m. to 8 p.m. Eastern, Monday through Friday, by email at VCexchanger@ariston.com, or online through ntiboilers.com or htproducts.com, where clicking the recall link on either site brings up the same safety notice. If you cannot immediately take the boiler out of service, for example in a cold-climate home with no backup heat source, the CPSC’s specific guidance is to make sure you have working smoke alarms and carbon monoxide alarms in the home while you wait for the technician, and to treat that as a stopgap, not a substitute for the repair. NTI and HTP Brand Gas Boilers Recalled Due to Risk of Serious Injury or Death from Fire, Carbon Monoxide (CO) Poisoning and Impact Hazards;
A separate, smaller HTP recall worth knowing about
This is not the only recent recall touching NTI and HTP equipment. In June 2025, the CPSC announced a much smaller recall of about 96 HTP Elite Ultra boilers, model numbers ELU-150WBN and ELU-199WBN, sold between October 2024 and February 2025, after incorrect burner door studs allowed the boiler door to fail to seal properly, letting flames and gases escape. That recall is distinct from the 2026 NTI/HTP FTVN, TFTN and EFTU recall described above, different models, different defect, different serial number ranges, so checking your rating plate against the current recall is still the right first step even if you already confirmed your unit wasn’t part of the earlier one. HTP Brand Boilers Recalled Due to Fire and Carbon Monoxide (CO) Poisoning Hazards and Risk of Serious Injury or Death; Made by NTI Boilers
The practical takeaway here is simple: locate the rating plate on the left side of your boiler, write down the model and serial number, and compare them against the ranges listed in Ariston’s recall notice before you depend on that unit through another winter. If your boiler matches, scheduling the free repair now, while contractors still have calendar room before the first real cold snap, is a better position than discovering the defect once the unit is running daily and a technician backlog has formed. If it doesn’t match, you’ve still confirmed something useful heading into heating season.
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