With all the energy codes coming into play now days you will be seeing fewer and fewer hand driers with heaters in them. Using ones with motion sensors and just forced air operate more efficiently. This helps in the overall energy rating of the building.
Verify the mounting height with the local inspector that enforces ada.
Read the literature as to GFCI protection.
I am waiting on an EC to give me the literature for some hand driers in a school. They want me to require GFCI protection and said it's in the paperwork. (They want the extra $$ as there is about 25 or so in the building) I told them I need to read the literature first. I should have that one Monday.
