Acting as if I really wanted to know the answer, I tried the Google query, chose the first hit, which was the product page for the Frigidaire FPHC2398LF (at this point if I were really doing this I would have had the clue to enter my own model number), which below the flash stuff has a navigation bar that has a button for Guides/Manuals. Click on that, click on download the English User Guide which is a PDF, and "Bing!" there in the table of contents is has "Changing the Filter" on page 15
The Bing hits for the question has as the first hit the home page of the Frigidaire web site. If I went there maybe I would think to click on the filters & accessories tab, which is a blind alley for this. Maybe I would click on the Refrigerators link and get clue that I want to look for my own model number and eventually get to that same page that was Google's first hit. The other hits on Bing had a number of reviews and links for Frigidaire appliances other than refrigerators.
I guess I would rank Google and Bing as being equally useless if I ask a question that is not specific enough to give the exact answer I want and if I am too clueless to use the results I get to track down the answer or figure out how to refine the question. In this case, Google got me about two clicks from the exact answer, Bing got me pretty much nowhere.
If as a result of this experience I realize that what I really want to search for the user manual, and next time I try that, and also indicate that I want a professional series refrigerator rather than, say, an oven, (search term frigidaire professional series refrigerator user manual) Google gets me results on the Frigidaire web site in the first two hits, Bing gets all third party sites and reviews on their first page of hits.