a) HAYCH
b) AYTCH
cheers
SC
a) HAYCH
b) AYTCH
cheers
SC
According to the Cambridge English Dictionary, the pronounciation is uniform between American and British English.
The phonetic description is: /eɪtʃ/ which is clearly without the H sound like in Home, but rather the silent H as in Honour.
See here
It is also one of, if not the only, letters of the alphabet that is officially written as a word in the dictionary. It is definitely in the dictionary, but not sure is it's the only one as can't be bothered to check!
I'm sure I've heard some Americans say "haitch" as well. Don't know if people really notice the difference anyway.
I have to say that whilst I do think (agree) that "aitch" is right, I don't really care - OP, why are you asking?
B)
British English dictionaries give aytch as the standard pronunciation for the letter H. However, the pronunciation haytch is also attested as a legitimate variant. We also do not ask broadcasters who naturally say haytch to change their pronunciation but if a broadcaster contacted to ask us, we would tell them that aytch is regarded as the standard pronunciation in British English, people can feel very strongly about this and this pronunciation is less likely to attract audience complaints.
Haytch is a standard pronunciation in Irish English and is increasingly being used by native English-speaking people all across the country, irrespective of geographical provenance or social standing. Polls have shown that the uptake of haytch by younger native speakers is on the rise. Schoolchildren repeatedly being told not to drop Hs may cause them to hyper-correct and insert them where they don't exist.