There's a lot of Steampunk-type stuff about, and I've read most of it, as well as reading a pretty diverse range of other novels.
This set of books is OK - the storyline is OK, the premise is OK. I'm not sure throwing in the odd description of "steam" and making the odd door work with "cogs" is necessarily high-end imaginative Steampunk. I considered two stars for a while, but that's unfair.
Descriptively, I found it confusing at times, as there appeared to be leaps from being in a tight spot to suddenly running for freedom, and not even with a single bound. And I don't really like any of the characters very much. I'm not too fussed what becomes of them - and a good lead character (or 2) should the the centre piece for a good story. The baddies aren't despicable enough, except almost by accident (think Anekin Skywalker sulking himself to the dark side), and the goodies are a bit banaal.
It's readable, and at times enjoyable...but mostly it's not that interesting.
Worth a read, but don't get your hopes up. If you want SP, start off with something like Scott Westerfield, Phillip Reeve, George Mann, Chris Wooding (very Firefly if you like the old TV series), or my personal favourite, Mark Hodder which messes with your head a bit, as well as being brilliant, imaginative and vivid.
As I say, worth a read, but don't expect too much.