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Thin Foil Panel

This Thin Foil panel has been installed both with and without aluminum. Within 20 minutes, Warmboard has achieved a panel temperature of 70º F and is outputting 10 BTUs per sq ft. The Thin Foil Panel with Aluminum takes 1 hour to reach this panel temperature and BTU output while the uncoated ThermalBoard does not reach that temperature or BTU output within 2 hours.

The striping (the temperature variation across the surface of a panel) only varies by 2º F on Warmboard. The Thin Foil panel with Al (aluminum) is almost double that amount, and the side without Al is triple. Warmboard is also generating 16 BTUs/HR/SF (British Thermal Units per hour per square foot), which means Warmboard generates more heat from the energy provided to your home.

Tubing on the Warmboard panel is 12” apart. This Thin Foil panel has tubing at 7” increments. This means more tubing and manifolds are added to the ThermalBoard cost as well as longer installation time.

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.

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