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How do I find the filter on a lennox G8Q3904 furnace?

\015 I need to know the location, and procedure for chaging the filter on my furnace. I also need to know the size/type of filter to purchase.\015

Answers :

If you don't have a filter "rack" installed then you have to remove the blower housing door. Usually the filter is there if it is not located in the house where the return air supply is. Some units have a filter in what is called a return air filter grill. If there isn't a filter already installed in the unit then you will have to measure the inside dimensions and then use one that is similar in size. It's not imperative that you use the exact same size. You just want to cover the opening of the unit. If you don't have central air conditioning, then it's not necessary to use a filter.

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