3" just runs hotter, it's how it was made. If you're hooking multiple pieces of flexwatt up to a single thermostat, it's a good idea to use the same width.
it has to do with how many watts per foot the flexwatt is the 3 inch is 6 or 10 watt per foot whyle the 4 inch is 20 watts per foot...has to do with the amount of wattage per square inch more watts in a square inch the more heat you will have...
sorry for digging up a dead post
Last edited by willieshotg3; 12-23-2010 at 07:59 PM.
it has to do with how many watts per foot the flexwatt is the 3 inch is 6 or 10 watt per foot whyle the 4 inch is 20 watts per foot...has to do with the amount of wattage per square inch more watts in a square inch the more heat you will have...
sorry for digging up a dead post
Correction 4" runs 8watts per foot. 11" runs 20watts per foot