Quote Originally Posted by KS63 View Post
Has anyone cleaned their own coils and what did you use? Did some quick research after my maintenance check up and they wanted $900 to clean the blower fan and coils. Service tech said they’d brush off the dust and use a cleaning spray on the coils. Thanks.
If you have been running the system WITHOUT a filter then you probably need to clean the evap coil and blower wheel.

If you've always had a filter in there regardless of it being dirty then you probably don't need to clean the evap coil and blower wheel.

Take a picture of your blower wheel vains and I post it up. I can usually tell if your coil is plugged up based on the vains of the blower.