Venmar is attempting to contact all owners of the heat recovery systems that may pose a potential fire hazard. Owners of the air exchange systems that are affected must immediately turn the unit off and unplug it , and contact Venmar as soon as possible by: visiting the firm's website at www.venmar.ca; phone 1-866-441-4645; or mail to SUP, 550 Lemire Blvd., Drummondville, Quebec, Canada, J2C 7W9. Please visit [NJS_FILE:8938bd5d-9d57-4166-a983-ba1b1f802cc4:83891d65-d3c1-47c8-a77a-bd0b5da30158] for additional information from the Electrical Safety Authority. Please note that this notice is subsequent to news releases issued on Decemeber 21, 2006 and January 19, 2007 ([NJS_FILE:8938bd5d-9d57-4166-a983-ba1b1f802cc4:3513bb02-6484-4320-9408-a4a99ec25e89]) by the Ontario Office of the Fire Marshal and the Electrical Safety Authority regarding similar issues with models manufactured between 1991 and 2001.