...The 5A XPPF is fine for CFLs, computers, and most other electronic devices. However, when pushed to their 5A rating they can get pretty warm and begin to smell like hot plastic. The 15A AF120 is also a good choice for high-current devices....
The master speaks...
[Newbies: Jeff is one of our experts here at the forum for making things work.]
I've never measured the power requirements of my refrigerator but imagine there is a label somewhere with the specs. As Brian said you need to allow for a surge so check your refrigerator. (Most likely on a label behind it.)
I had an application where a 5 amp Smarthome filter failed and it failed to an OFF state. (Anyone ever repaired one?) You do not want to have an underrated filter failing and leaving your refrigerator off.
I pretty much have switched to 10 amp Smarthome filters for just about everything in my house. I do have a power strip plugged into a 5 amp filter that I use for all my battery chargers as well as a floating 5 amp filter for my daughter's laptop when she brings it over her.