A more permanent solution is certainly possible but you may find it more feasible to consider Julie's suggestion regarding transformers.Our American neighbour bought a small (but heavy duty) transformer to power his wife's sewing machine.
I would also recommend you consider logging on to forums for the thousands of Americans who relocate every year and face the same challenges.Or an American forces forum.
Secondly this is a standard question embassy staff face and they will usually have the most practical solutions for you.Email both American and Irish embassy,s.
If you go the transformer route you will require nothing more than a plugtop ,which you are entitled to install yourself.
If you prefer an electrician ,as already suggested in a previous post,log on to the "Safe Electric" website where they give a full list of registered contractors ,county by county.