Mine does the same, think of it as 'homoestasis'.
Anyways,
Wasting away the moments that make up a dull day in the chat and someone, not sure whom, asked for a 'hold your hit' contest, silly, I know. But I ran an online stop watch to see how fast the VHW delivers vapor.
Before the 'mod' I'd be tiring out my lungs trying to get thick vapor, but with this, it only took 20 seconds from the moment I began inhaling, to when I finished exhaling (holding for 5-8 seconds). Aside from a 15 minute heat up time, that's pretty fast!
Hopefully get a real review up this weekend. It seems most people already got one themselves, so I won't shoot myself if I blow it off...