You keep it at 62 and your keets are fine with it?
Yes, they are, but they have a heated perch too. And, at night, they're covered. To keep energy costs low while providing heat for the keets, provide a lamp or a heated perch or something that will keep them warm. But I would not heat up the whole house or even a large room for them. That is too inefficient from an energy standpoint--a more localized solution is in order.
I realize that you live in upstate NY, the Adirondacks(?), so you live in a colder region than I do, which is around NYC.