Laars Heating Systems Recalls Gas Boilers and Water Heaters Due to Carbon Monoxide Poisoning Hazard
U.S. Consumer Product Safety Commission recall (2007-03-19). Hazards: carbon monoxide, chemical. About 2,100 units in the US.
| Agency | U.S. Consumer Product Safety Commission |
|---|---|
| Recall number | 07535 |
| Published | 2007-03-19 |
| Last updated | 2014-05-23 |
| Product category | Boilers & Accessories |
| Products | Laars 9600 CB Condensing Boilers & 9600 HWG Condensing Water Heaters |
| Firm named in the title | Laars Heating Systems |
| Firms | Laars Heating Systems Co., of Rochester, N.H. (manufacturer) |
| Manufactured in | United States |
| Units (US) | 2,100 |
| Hazard classes | carbon monoxide, chemical |
| Remedy classes | repair |
| Trade facets | hvac, plumbing water heating |
| Sold | Plumbing and heating wholesalers and representatives nationwide from November 1998 through February 2007 for between $6,500 and $7,300. |
Description
This recall involves Laars 9600 CB Condensing Heating Boilers and Laars 9600 HWG Condensing Water Heaters with black vent pipe/tubing. The recalled boilers are used to generate hot water for heating systems including baseboards or radiant flooring. The recalled water heaters generate hot water for use in homes, such as showers, sinks and dishwashers. "Mark II" and "9600 CB" or "9600 HWG" are printed on the front of the boilers and water heaters. The model number and BTU size are printed on the right side of the unit. The recalled boiler and water heater exteriors are putty and black-colored or taupe and black-colored. Only the following models are included in this recall. Model Input (Btu/h) Gas Boilers: CB 150 150,000 CB 175 175,000 CB 200 200,000 Water Heaters: HWG 150 150,000 HWG 175 175,000 HWG 200 200,000
Hazard
Internal black plastic venting components in the gas boilers and water heaters can crack and leak flue gases, including carbon monoxide (CO), posing a risk of CO poisoning.
Remedy
Consumers should contact Laars Heating Systems to help determine if their boiler or water heater needs to be shut off immediately and to schedule a free repair.
Incidents and injuries
Laars has received three reports of cracked vent components. No injuries have been reported.
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.