Bosch Thermotechnology Recalls Buderus Boilers Due to Carbon Monoxide Poisoning Hazard
U.S. Consumer Product Safety Commission recall (2019-12-20). Hazards: fire, carbon monoxide, chemical. About 170 units in the US.
| Agency | U.S. Consumer Product Safety Commission |
|---|---|
| Recall number | 20046 |
| Published | 2019-12-20 |
| Last updated | 2019-12-20 |
| Products | Buderus GB125-35 oil-condensing boilers |
| Firm named in the title | Bosch Thermotechnology |
| Firms | Bosch Thermotechnik GmbH, of Germany (manufacturer); Bosch Thermotechnology Corp., of Watertown, Mass. (importer) |
| Manufactured in | Germany |
| Units (US) | 170 |
| Hazard classes | fire, carbon monoxide, chemical |
| Remedy classes | repair |
| Trade facets | hvac, plumbing water heating |
| Sold | Wholesale distributors and installed by independent contractors nationwide from June 2008 through September 2012 for about $6,000. |
Description
This recall involves Buderus brand GB125-35 oil-condensing boilers distributed by Bosch. The boilers have a blue enclosure, and the GB125-35 model number is located on the data plate near the top right hand side of the boiler. The Buderus brand name is printed on the outside of the boiler's blue enclosure. Bosch Thermotechnology and the model number are printed on a white label on the blue enclosure.
Hazard
The siphon can become blocked, leading to a delayed ignition that can damage the boiler's exhaust system, creating a carbon monoxide hazard.
Remedy
Consumers should immediately contact Bosch for a free repair. Consumers who continue to use the boilers while awaiting repair should have a working carbon monoxide alarm installed outside of sleeping areas in the home.
Incidents and injuries
None reported in the U.S.
Machine access
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Source: U.S. Consumer Product Safety Commission recall notice (US Government work). Not affiliated with or endorsed by CPSC. Structured by Data Foundry (product-recall-structuring@2); last changed 2026-09-28. Always confirm with the agency notice.