We have purchased a new high-tech gadget to help protect you: It is a tiny camera mounted on as flexible extension. We can snake this camera up into your furnace heat exchanger and look for dangers cracks that used to be inaccessible. That means we can now find heat exchanger cracks that used to go undetected. Cracks in your heat exchanger can allow CARBON MONOXIDE, a deadly gas, to enter your home, causing nausea, illness, or even death. Thiis is just one more way we are keeping you safe, warm and comfortable.