Severity
Moderate
ModerateActive
CPSC recall · Reported December 20, 2019
Bosch Thermotechnology Recalls Buderus Boilers Due to Carbon Monoxide Poisoning Hazard
The siphon can become blocked, leading to a delayed ignition that can damage the boiler's exhaust system, creating a carbon monoxide hazard.
Compiled from official public sources by the editorial team.
Verify with CPSC →
Bosch Thermotechnik GmbH, of Germany recalled This recall involves Buderus brand GB125-35 oil-condensing boilers distributed by Bosch. … - a moderate-severity action.
Bosch Thermotechnology Recalls Buderus Boilers Due to Carbon Monoxide Poisoning Hazard was recalled by Bosch Thermotechnik GmbH, of Germany in December 20, 2019. Reason: The siphon can become blocked, leading to a delayed ignition that can damage the boiler's exhaust system, cre…. Remedy: Consumers should immediately contact Bosch for a free repair. Consumers who continue to u…. Verify recall #20046 with the CPSC before acting.
The recall
Bosch Thermotechnik GmbH, of Germany issued this moderate-severity CPSC recall-The siphon can become blocked, leading to a delayed ignition that can damage the boiler's exhaust system, cre….
- Moderate
- severity level
- December 20, 2019
- reported
Sourced from official CPSC enforcement records. Verify recall #20046 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.
Recall Insight
This CPSC action (record #20046) was formally reported on December 20, 2019. It is classified under Moderate severity, with a current status of Active. Bosch Thermotechnik GmbH, of Germany is listed as the recalling firm. Federal records list the affected scope as About 170.
The documented reason for this recall is: The siphon can become blocked, leading to a delayed ignition that can damage the boiler's exhaust system, creating a carbon monoxide hazard. 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 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… - 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, 6 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.
Household Products recalls over time
Where this recall sits in its category - 3,056 household products 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 170
Related Recalls
6
6 from same agency
Product 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.
Reason for recall
The siphon can become blocked, leading to a delayed ignition that can damage the boiler's exhaust system, creating a carbon monoxide hazard.
Remedy, what to do
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.
Recall Profile
| Attribute | Value |
|---|---|
| Agency | U.S. Consumer Product Safety Commission |
| Severity class | Moderate |
| Status | Active |
| Recall number | 20046 |
| Date reported | December 20, 2019 |
| Date initiated | December 20, 2019 |
| Recalling firm | Bosch Thermotechnik GmbH, of Germany |
| Affected scope | About 170 |
| 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 contact Bosch for a free repair. Consumers who continue to use the boilers while awaiting repair sho…
- Check the recall number (20046) 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 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.. Recalled by Bosch Thermotechnik GmbH, of Germany. Units affected: About 170.
Why was this product recalled? ▼
The siphon can become blocked, leading to a delayed ignition that can damage the boiler's exhaust system, creating a carbon monoxide hazard.
What should consumers do? ▼
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.
Which agency issued this recall? ▼
This recall was issued by the CPSC on December 20, 2019. Severity: Moderate. Recall number: 20046.
How do I check if my product is affected by a recall? ▼
Check the product description and recall number (20046) 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.
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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, 2019. 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.