When equipment is deemed unsafe and you’re left with a red tagged furnace. Similarly, we get calls nearly everyday in the winter about a gas furnace red tag in Toronto.
When a gas appliance is deemed unsafe a licensed technician is by law required to create a red tag.
Many times we have noticed an air conditioning coil has leaked on the the furnace heat exchanger. Which caused the aluminized steel to corrode, crack, and breakdown. Have your coil inspected to make sure it doesn’t damage a new furnace being installed.