used enwise a year ago, but they aggressively tried to sell me their products - at rip off prices.
we didn't buy their stuff, and it subsequently took forever for them to get back to me for anything. I had no clue where I was at in the process of submitting forms, since all that work is done by enwise. It was quite an ordeal, and to make a long story short I had to get the Ministry of Natural Resources involved and make a formal complaint regarding enwise. I'm hoping enwise has learned from this and that nobody experiences the same problems I did.
so, a bad experience overall - but in the end i got a great deal on a new furnace and a/c (with a different company of course), and the rebates were awesome