I'm a new home owner and my house has a Trane XE90 Heating and Cooling unit. It's been over a month now and I need to replace the filter. Can anyone provide me the steps to change the filter? I have the filter with me but I could not figure out how to open the unit to change it. I really appreciate any help on this.

Sundar.

Panel slides or pulls off or a combination of both OR it has screws that holds it on. Remove old filter and replace with new. Now if you have a electronic air cleaner see the manufactures web site for cleaning instructions.