I have two Rheobus controllers in my system and I'd really like to do away with one of them. I have 3 Panaflo U1A's on my radiator thats currently on seperate channels. Sunbeam claims you can have 20w per channel but I'm wondering exactly how accurate that is. The Panaflo's are rated at 6.12w a peice so I would very close to their maximum wattage if I put them all on one channel.