Severity
Moderate
ModerateActive
CPSC recall · Reported December 20, 2018
Navien Recalls Tankless Water Heaters and Boilers Due to Risk of Carbon Monoxide Poisoning
A kit installed on the tankless water heaters and boilers to convert them from natural gas to propane can cause the unit to produce excessive amounts of carbon monoxide, posing a …
Compiled from official public sources by the editorial team.
Verify with CPSC →
Kyung Dong Navien Co. Ltd, South Korea recalled This recall involves only Navien condensing tankless water heaters and combination boiler… - a moderate-severity action.
Navien Recalls Tankless Water Heaters and Boilers Due to Risk of Carbon Monoxide Poisoning was recalled by Kyung Dong Navien Co. Ltd, South Korea in December 20, 2018. Reason: A kit installed on the tankless water heaters and boilers to convert them from natural gas to propane can cau…. Remedy: Consumers should immediately stop using the recalled water heaters and boilers that are u…. Verify recall #19057 with the CPSC before acting.
The recall
Kyung Dong Navien Co. Ltd, South Korea issued this moderate-severity CPSC recall-A kit installed on the tankless water heaters and boilers to convert them from natural gas to propane can cau….
- Moderate
- severity level
- December 20, 2018
- reported
Sourced from official CPSC enforcement records. Verify recall #19057 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.
Recall Insight
This CPSC action (record #19057) was formally reported on December 20, 2018. It is classified under Moderate severity, with a current status of Active. Kyung Dong Navien Co. Ltd, South Korea is listed as the recalling firm. Federal records list the affected scope as About 3,400.
The documented reason for this recall is: A kit installed on the tankless water heaters and boilers to convert them from natural gas to propane can cause the unit to produce excessive amounts of carbon monoxide, posing a risk of carbon monoxide poisoning to con… Distribution information was not included in the agency filing, so consumers should assume broad potential exposure until the firm publishes point-of-sale details. The remedy documented by the agency is: Consumers should immediately stop using the recalled water heaters and boilers that are using propane gas and contact Navien for a free replacement conversion kit. Consumers who continue use of the w… - consumers holding this product should act on that instruction rather than relying on general guidance.
Within the same product category the archive holds 6 closely related recalls, 4 from CPSC - clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.
Food recalls over time
Where this recall sits in its category - 25,126 food recalls on record
Of 101,704 recalls in the database, 24,878 are high severity, 72,426 moderate, and 4,400 low. This recall is classified moderate severity.
Counts reflect market size and reporting activity, not inherent danger, we do not rank products by risk from raw recall volume.
Affected scope
About 3,400
Related Recalls
6
4 from same agency
Product description
This recall involves only Navien condensing tankless water heaters and combination boilers with model numbers NPE-180A, NPE-180S and NCB-180E that have been or will be converted from using natural gas to propane gas. The recalled water heaters and combination boilers were manufactured between July 9, 2018 through October 14, 2018. The manufacturing date is identified within the serial number. The serial number is printed on a label which is affixed to the side of the unit and on the product packaging. The first two digits identify the year, the next single digit identifies the month, and the last two digits identify the day. For example, 18709 stands for July 9, 2018. X stands for October. Product Model UPC Code Serial Numbers with date of manufacture Navien Condensing Tankless Water Heater NPE-180A 884954974101 7410x18709xxxx 7410x188xxxxxx 7410x189xxxxxx 7410x18X14xxxx Navien Condensing Tankless Water Heater NPE-180S 884954974194 7419x18709xxxx 7419x188xxxxxx 7419x189xxxxxx 7419x18X14xxxx Navien Condensing Combination Boiler NCB-180E 884954966083 6608x18709xxxx 6608x188xxxxxx 6608x189xxxxxx 6608x18X14xxxx
Reason for recall
A kit installed on the tankless water heaters and boilers to convert them from natural gas to propane can cause the unit to produce excessive amounts of carbon monoxide, posing a risk of carbon monoxide poisoning to consumers.
Remedy, what to do
Consumers should immediately stop using the recalled water heaters and boilers that are using propane gas and contact Navien for a free replacement conversion kit. Consumers who continue use of the water heaters and boilers while awaiting repair, should have a working carbon monoxide alarm installed outside of sleeping areas in the home.
Recall Profile
| Attribute | Value |
|---|---|
| Agency | U.S. Consumer Product Safety Commission |
| Severity class | Moderate |
| Status | Active |
| Recall number | 19057 |
| Date reported | December 20, 2018 |
| Date initiated | December 20, 2018 |
| Recalling firm | Kyung Dong Navien Co. Ltd, South Korea |
| Affected scope | About 3,400 |
| Distribution | Not disclosed |
| Official source | CPSC notice → |
Profile values are sourced directly from the official CPSC enforcement record. Source: U.S. Consumer Product Safety Commission.
What to do with this recall
Consumers should immediately stop using the recalled water heaters and boilers that are using propane gas and contact Navien for …
- Check the recall number (19057) and product description against the item you own. Search the archive
- Confirm the current status and remedy on the official CPSC notice before acting. CPSC notice
- Follow the documented remedy (refund, replacement, repair, or disposal) rather than general advice. What to do next
This page summarizes the official CPSC record for research and awareness; it is not legal, medical, or safety advice. Verify with the issuing agency before acting.
Frequently Asked Questions
What product was recalled? ▼
This recall involves only Navien condensing tankless water heaters and combination boilers with model numbers NPE-180A, NPE-180S and NCB-180E that have been or will be converted from using natural gas to propane gas. The recalled water heaters and combination boilers were manufactured between July 9, 2018 through October 14, 2018. The manufacturing date is identified within the serial number. The serial number is printed on a label which is affixed to the side of the unit and on the product packaging. The first two digits identify the year, the next single digit identifies the month, and the last two digits identify the day. For example, 18709 stands for July 9, 2018. X stands for October. Product Model UPC Code Serial Numbers with date of manufacture Navien Condensing Tankless Water Heater NPE-180A 884954974101 7410x18709xxxx 7410x188xxxxxx 7410x189xxxxxx 7410x18X14xxxx Navien Condensing Tankless Water Heater NPE-180S 884954974194 7419x18709xxxx 7419x188xxxxxx 7419x189xxxxxx 7419x18X14xxxx Navien Condensing Combination Boiler NCB-180E 884954966083 6608x18709xxxx 6608x188xxxxxx 6608x189xxxxxx 6608x18X14xxxx. Recalled by Kyung Dong Navien Co. Ltd, South Korea. Units affected: About 3,400.
Why was this product recalled? ▼
A kit installed on the tankless water heaters and boilers to convert them from natural gas to propane can cause the unit to produce excessive amounts of carbon monoxide, posing a risk of carbon monoxide poisoning to consumers.
What should consumers do? ▼
Consumers should immediately stop using the recalled water heaters and boilers that are using propane gas and contact Navien for a free replacement conversion kit. Consumers who continue use of the water heaters and boilers while awaiting repair, should have a working carbon monoxide alarm installed outside of sleeping areas in the home.
Which agency issued this recall? ▼
This recall was issued by the CPSC on December 20, 2018. Severity: Moderate. Recall number: 19057.
How do I check if my product is affected by a recall? ▼
Check the product description and recall number (19057) against your product. Visit the official CPSC website for the most current information. You can also use our Recall Checker tool to search by product name or brand.
How do I report an injury from a recalled product? ▼
Report injuries to the issuing agency: CPSC at SaferProducts.gov, NHTSA at nhtsa.gov/report-a-safety-problem, or FDA via MedWatch. Document the product (photos, model/serial numbers, purchase receipts) and seek medical attention. Injury reports help agencies track hazard patterns and may strengthen enforcement actions.
Nearby Recalls in This Category
Other recalls in the same product category, useful for spotting patterns across the same defect class or manufacturer.
CPSC Moderate
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· 2026-07-02
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Yamaha Recalls UMAX Bistro and Bistro Deluxe Vehicles Due to Injury Hazard
· 2026-06-11
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Butter Parsley Bagel Crisps, Item Number 18490, Net Weight: 10 lbs. Legacy Bakehouse, LLC, N8W22100 Johnson Dr., Wauk…
Legacy Bakehouse LLC · 2026-06-03
Compare this recall with Conair Recalls Over One Million Cuisinart Grill Brushes Due… →
Every figure on PlainRecalls is rendered directly from official FDA, CPSC and NHTSA recall records, no number is typed in by an editor. This recall: CPSC, reported December 20, 2018. Severity classes follow each agency's own taxonomy (FDA Class I/II/III; CPSC and NHTSA by hazard type), and related-recall context is computed across the full archive. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of July 2026.