I have these numbers calling at random hours in the day and evening as well.. never a message. FYI here is another number they are calling from as well (519) 913-0839.
I finally answered this one... they are wanting in tomorrow to do an inspection!!! I THINK NOT... and add me to your DO NOT CALL LIST

Ontario Ventilation has a D+ rating with the BBB in London. They use aggressive sales tactics and target seniors. They misrepresent themselves as "your furnace company" when they come to your door and say they are there to do an inspection. My 83 year old father got taken for $500 for air duct cleaning back in May 2011. Guess what? They were back again in October to do another inspection! I had to get on the phone and tell the service person to leave. The principal of the company is Troy Van Dyk who is presently facing fraud charges for his involvement with Fulcrum Investments. Need I say more.

number keeps calling in morning and never leaves a message . Called the number back to find out it is some company called
ONTARIO VENTILATION COMPANY INC.
Phone: (226) 663-1936
Address: 126 Belmont Dr
London, ON N6J 4W1
Original Business Start Date: September 2008
New Owner Date: September 2009
Principal: Troy VanDyk
Customer Contact: Troy VanDyk
Type of Business: Duct Cleaning

number keeps calling in morning and never leaves a message . Called the number back to find out it is some company calledONTARIO VENTILATION COMPANY INC. Phone: (226) 663-1936 Address: 126 Belmont Dr London, ON N6J 4W1 Original Business Start Date: September 2008 New Owner Date: September 2009 Principal: Troy VanDyk Customer Contact: Troy VanDyk Type of Business: Duct Cleaning

(519) 913-2237 called at about 9:30 AM on Saturday morning Oct. 2nd 2010. They rang the phone for about 50 - 60 rings & hung up when the @$%&#@  finally irritated me out of bed!