Ecowarm and Radiant Complete are the same product. They are just branded differently on the West and East Coasts.
In this test, Warmboard reaches a surface temperature of 70º F and is outputting 10 BTUs per sq ft in just about 20 minutes. The Radiant Complete panel requires 1 hour and 30 minutes to reach this panel temperature and BTU output.
The striping (the temperature variation across the surface of a panel) only varies by 2.2º F on Warmboard while the competitor panel is 4.7º – more than double. Warmboard generated 16 BTUs/HR/SF (British Thermal Units per hour per square foot), while the Radiant Complete generated 12.
Tubing spacing on the Warmboard panel and the Radiant Complete panel is 12”.
Both panels were in an environment with a 65º F air temperature. They both also had the same water temperature, 120º F. The insulation over each panel had a R-Value of 2.22.
Note: Temperatures were taken from just above the center of each panel. Striping differences were also gathered from this area. Temperatures from on top of the tube were compared to temperatures at the midpoint between the tubing pattern.