Boaz thanks for answer, but You are not fully right.
From the viewpoint of SEO, H1 tag is not the same as “page title”.
Good practices say that H1 should be seen as “site title”, H2 as “site description” and so on…
Inserting H1 or H2 tags in the form of text on the page does not look elegant. They should be automatically taken from site title and description, defined in WordPress settings.
Regards