if your AC is using a lot of amps, your probably getting sags; or undervoltage.
A surge protector will do no good.
Doubtful you'll get any hardware damage out of it. Just a pain in the ass.
Surges and spikes are different. A surge is like a spike only slow and not as severe. You might get a surge to your box when your AC shuts down or anything with an electric motor on the wiring system shuts off. small surges will destroy your box over time.
Spikes are quick, intense and will fuck you and all your shit up in an instant... i.e. lightning.
A surge portector will work for surges but not many spikes.
Best bet would be a UPS to keep the power conditioned like iroc409 said.
Good luck!
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