I have a staple-up radiant with aluminun plates. I have a pararell wood-oil system. I have 5 zones, some rooms are used contstantly some are used 1 to 2 hours per day. My wood boiler is home built and undersized, my storage is also undersized. I have programmed t-stats to ramp up to peak at primary use periods in some zones and relativly constant in others. I hear all the time that radiant being slow should not be set back. Laws of physics are simple, "heat travels to cold" and "the rate it travels is faster the greater the difference in temp".shouldent a cooler room lose less heat to the outdoors? isnt that what we are shooting for? Any thoughts?