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Lochinvar Recalls Condensing Residential Boilers Due to Risk of Carbon Monoxide Poisoning

  • Recalled Lochinvar boiler
  • Recalled Lochinvar boiler
  • Boiler data plate
Name of Product:
Lochinvar condensing residential boilers

The boiler’s flue grommet can deteriorate and dislodge during use and allow the boiler to emit carbon monoxide, posing a risk of carbon monoxide poisoning.

Recall Date:
June 18, 2020
About 34,300 (In addition, about 3,642 units were sold in Canada)
Consumer Contact

Lochinvar toll-free at 833-232-9706 from 8 a.m. to 8 p.m. ET Monday through Friday. Check for the recalled boilers’ serial number at:, and select the look-up feature for the flue grommet recall. Consumers with Lochinvar-branded boilers can find a qualified service technician by visiting: Consumers with A. O. Smith or State Proline-branded boilers should contact their installer. If consumers do not know their installer, contact Lochinvar toll free at: 833-232-9706.

Recall Details


This recall includes residential condensing boilers, combi boilers and packaged systems sold after August 2016. The following model numbers are included in the recall. They were sold under the Lochinvar, A. O. Smith, and State Proline brand names and have serial numbers within the range of 103475818 through 115078306. The model number and serial number can be found on the data plate on the product located on the unit’s rating plate, which is located either on the outer jacket of the unit, or on the underside of the removable front jacket plate. The brand name is printed on the front of each unit.

Recalled Model Numbers
ACB110H-N KHB285L-8647 SCB110H-N WHL156-8647
ACB110H-P KHB285N SCB110H-P WHL200
ACB110S-N KHB285N-001 SCB110S-N WHL286
ACB110S-P KHB285N-002 SCB110S-P WHL286-8647
ACB150H-N KHB285N-8018 SCB150H-N  
ACB150H-P KHB285N-8647 SCB150H-P WHN
ACB150S-N KHB285N-8710 SCB150S-N WHN056
ACB150S-P KHB285N-M7 SCB150S-P WHN056-8647
ACB199H-N   SCB199H-N WHN086
ACB199H-P NKB SCB199H-P WHN086-8647
ACB199S-N NKB050L SCB199S-N WHN111
ACB199S-P NKB050L-8647 SCB199S-P WHN111-8647
APN285 NKB050N-8647 WHB055L WHN156-8647
EPB080N NKB080L-8647 WHB055N-8647 WHN200-0119-002
EPB110N NKB080N WHB085L WHN200-8647
EPB110N-CAN NKB080N-8647 WHB085N WHN286
EPB150N NKB110L WHB085N-8647 WHN286-M7
EPB199N NKB110L-8647 WHB110L WHN286-001
EPC NKB110N WHB110N WHN286-8647
EPC110N NKB110N-8647 WHB110N-8647  
EPC150N NKB150L-8647 WHB155N  
EPC199N NKB150N WHB155N-8018  
KHB NKB150N-8647 WHB155N-8647  
KHB055L NKB199L WHB199L  
KHB055N NKB199L-8647 WHB199N  
KHB055N-8647 NKB199N WHB199N-8018  
KHB085L NKB199N-8647 WHB199N-8647  
KHB085N   WHB285L  
KHB085N-8647 NKC WHB285L-8647  
KHB110L NKC110L WHB285N  
KHB110N NKC110L-8647 WHB285N-0119-001  
KHB110N-8647 NKC110N WHB285N-8647  
KHB155L NKC110N-8647 WHB285N-M7  
KHB155N NKC150L WHB399L  
KHB155N-8647 NKC150L-8647 WHB399N  
KHB199L NKC150N WHB399N-0119-001  
KHB199N NKC150N-8647 WHB399N-0119-002  
KHB199N-0030-001 NKC199L WHB399N-0119-003  
KHB199N-8018 NKC199L-8647 WHB399N/199N-0119-001  
KHB199N-8647 NKC199N WHB399N-8647  
KHB285L NKC199N-8647 WHB399N-M7  



Consumers with the recalled boilers should immediately contact the installer or a qualified technician to schedule a free repair. Consumers who continue use of the boilers while awaiting repair should have working carbon monoxide alarms outside of sleeping areas and on every level of the home.


The firm has received 7 reports of boiler’s flue grommets deteriorating, including one report of two nonfatal injuries involving carbon monoxide poisoning, and two reports of carbon monoxide emission not involving an injury.

Sold At:
Independent contractors, plumbers, and plumbing supply vendors and distributors, from August 2016 through June 2020, for between $8,000 and $25,000, including installation.
Lochinvar LLC, of Lebanon, Tenn.
Manufactured In:
United States
Recall number:
Fast Track Recall

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