The basic idea looks interesting, thanks. The 'roof' at the top of the H looks a bid strange for me. You might leave it but how about making the first pillar of the H longer and put some symbols of windows to make the bridge to the high rise buildings? The green colour might be a bid stronger
Hi, my idea behind the logo was to incorporate some kind of HVAC system, so basically this green shape is an air flow with an arrow rather than "roof". But I see your point and I think it might work this way as well.
This time I've tried to show both. I've adjusted it a little bit to make the shape look more like an arrow, and also as a roof. Please let me know which one you like most and if you want me to play with different colors. I've also changed the green a bit, but I'm not quite sure if this is what you ment by "stronger".