I have a farly new central A/C unit, and the evaporator looks to be clogged with dust. Unit has a boars hair filter that I have changed/cleaned regularly but doesn't seem to have done the job. I am good with my hands, and have a basic understanding of how the system works. What would be the best way to clean the evaporator. I plan on finding a way to upgrade the filter setup to try to prevent this in the future. I'm new to this climate and have not had to deal with Central A/C in the past. I don't want to call a service tech and be taken to the cleaners if this is something I can do myself. Thanks for any help I can get.

A guy is selling lots of Honeywell T8411R heat pump thermostats on ebay, so this question might help others like me who have bought one. My old thermostat is a Columbus Electric analog wired like this: X2: black O: orange G: green Y: yello T: tan R: red W (jumpered to U): white B: blue F: unused I won't try this until I hear from you, but it looks like the Honeywell digital should be wired like this? G: green C: white R: red W1: unused but jumpered to Y Y: yello L: unused W2: black E: unused B: blue O: orange This leaves my tan wire unconnected. Does my educated guess work, or will it blow up my American Standard heat pump? Please let me know which wire is which so I don't do any damage. Thanks!