I have a 20 year old heating and cooling system. I was able to remove an inspection panel and clean the backside of the evaporator coils.
To clean the front, it appears the only way I will be able to is if I remove the heat exchanger from the natural gas portion of the furnace. I disconnected the natural gas and turned off the power. I was able to remove the portion that supplies natural gas.
I then removed about ~15 screws around the perimeter of the heat exchanger. However, there is no clearance between it and the top of the stamped steel cabinet. Any attempt to remove it just results in it getting caught on stuff and wedged at odd angles. There is no possible way that is was installed like this. It appears the top of the cabinet is literally resting on this now.
Is it likely that over the years it has become only thing holding my A/C unit together? Should I give up on trying to remove it if it is this bad of condition? I'd like to clean those evaporator coils, but it seems that trying to get this apart is just going to be destructive overall.