If you bought them, you may use them wherever you want. As long as only you are using it.
If your company bought the license, then you would require a separate license if you want this for home. Per seat means the number of people in an organization using it. Not the number of machines it is used on.
Note that there is a corollary to this, a single machine used by two developers, all of them using NH Prof requires two licenses, one for each user of the profiler.