CPSC campaign 12074
Hazard
An unstable connection can cause the water heater's vent collar to separate or detach if pressure is applied. A detached vent collar poses a risk of carbon monoxide poisoning to the consumer.
Remedy
Consumers should immediately stop using and check the model and manufacture year information on their Navien water heater. Consumers with recalled water heaters should immediately contact Navien to schedule a free repair. Navien will replace all Nylon 66 vent collar with PVC collars. Consumers who continue use of the water heaters while awaiting repair, should have a working carbon monoxide alarm installed outside of sleeping areas in the home.
The text above is quoted verbatim from the CPSC record. Confirm the affected units and the remedy with the manufacturer or CPSC. Recall data may be incomplete, delayed, or superseded.