I have a Goodman air handler in my attic that is easily accessible. I've posted about a situation I had recently where condensation was dripping out of the tray. First tech said water was condensing on the cold freon tube and put some putty around the opening where the tube enters the air handler. didn't work. Second tech said fan was blowing across the drip tray, blowing bits of water into the duct, where it fell and leaked out. He reduced fan speed to "Medium" using the wires that connect to the controller. leak stopped, but air volume was pretty low, just enough to cool the Phoenix house. But when winter came, the heating didn't work well enough any more. The furnace is gas, and the fan was so slow you could barely hear it. Also, the heat would shut off. Tech came, said that is because there isn't enough airflow to cool the heating burner, triggering the safety cutoff (which he recommended I replace now that it's been activated). He noted that the coil was very dirty and clogged, a fact I had not known about, and which the first two techs had not considered or noticed. He said I will need to have it cleaned, and we put the fan speed back up to a higher level to allow more flow. This worked for the heat problem, and the heat works great.
SO NOW FOR THE QUESTION.
If you have any thoughts on the above, I would love to hear, but my big question is this. With this air handler, an older (10 years old or so, if memory serves) Goodman unit, I'm told there is no access to the coil to clean it easily, and it will require freon to be evacuated and then the coil cut out for cleaning and then soldered back in after, for about $. I have looked at the unit and there don't seem to be any doors that can be opened to reveal the dirty side of the coil. But, I was thinking that I could cut an opening in the side of the unit, and access it that way, then seal the hole later with a well-sealed sheet of aluminum. Can anyone tell me if this is feasible?
Thanks a lot...
Steve in AZ