Be warned, the type of protector you need for a refrigerator or window A/C units is not for the motor but for the compressor. What damages a refrigerator or window A/C is not so much surges but the times when the electrical service "blinks" or goes off for just a very short time and then back on. The compressors are then re-starting under load and this will do expensive damage.
Both Tripp Lite and Belkin, probably many other manufacturers also, have these in 120V and 240V single outlet devices made exactly for these applications. They have a 3 minute delay before the power is restored, giving the compressors time to pressure equalize. They also will sense and perform the same for a brown out or high voltage surge..keeping the appliance disconnected until the line current is restored to normal.
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