I have had Canoga Park Heating & Air Conditioning out to my home a few times in the past couple of months. The first time they came out to install an air filter/purifier and the second time they came out to check for carbon monoxide and cleaned out the vents. So far I am very happy with them. I understand that the employees really make the difference in the customer's opinion of the company and everyone I worked with was just fantastic. I would totally use them again.