Sorry! Contrary to what I wrote before, the EU surge immunity requirements for a.c. supplies are 1kV between the leads and 2kV between either lead and ground, the same as for industrial d.c supplies.
    Unless your location is known to be particularly bad for surges (or maybe a location supplied by overhead rather than underground lines)I wouldn't worry unduly. Even before we had these requirements in the EU, TV sets used to last for years without being damaged by surges. One of ours is 21 years old at least (saved from the garbage skip when Tatung's Bradford laboratory closed in 1985). I would imagine that US manufacturers will be sufficiently concerned about their reputations to have ensured similar reliability.
    You could write to the maker's customer relations department and get their recommendations in writing. Then if you complied with their recommendations they could hardly refuse to honour the guarantee.