When you first contacted us, Enbridge had just left your home because your carbon monoxide detectors had gone off. Our senior technician, who followed after, identified several code infractions when he arrived on site.
The red tag, which is the primary focus of your negative review, was towards your defective heat exchanger. For your reference, we have pictures of severe water leakage and damage in the upper compartment of the furnace. Due to the nature of the leak, the senior tech concluded it was coming from the secondary heat-exchanger.
We never heard back from you after our visit, and we would have been more than happy to discuss and explain our findings. Reality is our senior technician has over 25 years experience, and novice technicians can easily overlook this complicated problem. If he had walkthrough those other technicians who visited your home via phone, he could have guided them to the same clues and conclusion.
We find it interesting that despite having 4 other HVAC companies confirming it was fine, you still went with our recommendation and replaced the furnace.
I suppose the combination of your CO detectors going off, the obvious signs of water damage and the convincing arguments from our senior tech might have been a factor.
We hope this better explains the situation. We strive for the highest level of customer satisfaction, and we're still more than happy to discuss this matter further if you wish. Feel free to call our main line at 416 269 2228 anytime.