Angry Jon i was wondering the same thing...

You are venting the AC heat right into the regular room and no problems?

Hmmmm.......

How about sweating, or dripping of water vapor off those fin coils...none of that either?

Fuck I bought one just like it and never opened the fricking box becusae I was too lazy to deal with it.

SABER....

As far as an HPS bulb running along with your other bulb.....

If your bulb is a standard HPS and not ahortilux or anything like that, no, I wouldnt use it during veg.

It will only encourage elongation of nodal length while your other bulb tries to prevent it. Come flower time your pants will love it......but during veg, I think its just a waste of electricity.

People DO veg and flower with HPS but you just look at the results and see the difference.

It is not an optimal light for vegging. Better than a reg. light bulb yes...