We own two
LeMaitre Radiance Hazers, which I know isn't the same thing as a true fogger, however, if you set the flow to max, the interval to 0, and the blowers to full, it'll pump out some serious
fog/
haze. I have run our units straight out at max settings before for 20+ minutes without them skipping a
beat (that I've ever noticed at least). I've filled a 25x15x12 room so thick you cannot see your
hand inches from your
face (like dangerously thick) in a matter minutes.
Upon some quick looking, it appears LaMaitre has spun-off their Radiance
Hazer to Ultratec (
http://www.ultratecfx.com/Products/haze/radiance-hazer) but that is the exact
unit I have, just from when it was
LeMaitre branded. I also have the touring kits for them and have used them both with the local remotes and
DMX. They have been workhorses for me and owe me nothing. They work best if given plenty of time to warm up. The ready lights go on after probably 5-8 minutes, but I always like to give them 15-20+ minutes to warm up... The longer they're on the better they are in my experience. The little video on that site is a pretty good example of what it can do, but they'll fill a space quite quickly.
Again, not the exact same thing as the foggers, but I've now been using 2 of those units for nearly a decade with minimal upkeep and they've been great to me.