Gas Vent Dampers (Effikal) – carbon monoxide (2008)
Check Your Product
According to the U.S. Consumer Product Safety Commission (CPSC)
Product
Automatic Gas Vent Dampers
Brand
Effikal LLC, of Orion, Mich.
Lot Codes / Batch Numbers
Not specified in CPSC notice. Check official source for details.
Product Images
Source: U.S. Consumer Product Safety Commission
Effikal LLC, of Orion, Mich. is recalling Automatic Gas Vent Dampers. The hazard is: The automatic gas vent damper could fail, and if the blocked vent switch does not activate, the vent. Based on CPSC recall notice.
Summary derived from CPSC notice
The following details were not provided by CPSC: UPC codes.
Reason for Recall
As stated by CPSC
The recall involves Effikal RVGP-PC Gas Vent Damper size 4, 5, 6, 7, 8, 9, or 10 which are installed with the gas boiler systems listed below. The vent damper date code is located on a sticker under the motor assembly cap on the plastic base. Serial numbers are located on a label on the side of the damper's cap. All sizes and models of the RVGP-PC have the same motor assembly with black Effikal caps and black plastic bases. Manufacturer Atmospheric Gas Boiler Models Vent Damper Date Codes Vent Damper Serial Numbers Allied Engineering MG, MS and SG Series 0728 through 0809 3588428 through 3687571 Burnham Series 2b, Series 8h, and Independence except Independence PV 0728-0738 3588428-3647820 Crown AWI, CWI and BSI Series 0728-0809 3588428-3687571 Hydro Therm R/MR, VGA, VS and HW Series 0728-0809 3588428-3687571 Laars JV Series 0728-0809 3588428-3687571 Lochinvar CBN Solution Series 0728-0809 3588428-3687571 RBI Spectrum Series 0728-0809 3588428-3687571 Smith GB and HW Series 0728-0809 3588428-3687571 New Yorker CG and CGS Series 0728-0738 3588428-3647827 Peerless MI, 63 and GM series 0728-0809 3588428-3687571 Raypak Series XV-42-180 Series V-181-260 and 182-261 Series VII-133 0728-0809 3588428-3687571 Union Steam GWA and GSA 0728-0809 3588428-3687571 Weil-McLain CGa, EG, and PFG Series 0728-0738 3538074-3647830 WilliamsonThermoflo GWA and GSA s 0728-0738 3538074-3647830
Reported concern (CPSC)
The automatic gas vent damper could fail, and if the blocked vent switch does not activate, the vent could leak carbon monoxide (CO). This poses a risk of CO poisoning to consumers.
Recommended Action
Per CPSC guidance
Consumers should immediately stop using the boilers, weather permitting, and contact their installer to confirm they have a recalled vent damper and to receive a free vent damper replacement.
Verify this information on the official source
For complete details and official instructions, check the U.S. Consumer Product Safety Commission (CPSC) directly.
View official CPSC recall noticePage updated: Jan 6, 2026