Production models of the GARN WHS 1500 and GARN WHS 2000 units were tested by Intertek, an independent test laboratory, in accordance with the Thermal Storage Appendix X1 of ASTM Document E 2618 – 09.
Emissions and Efficiency Results:
GARN® WHS 1500
GARN® WHS 2000
* The LHV values have been used in the Federal Rebate Program. To compare to non-wood heating equipment, the HHV efficiency should be used (66.9% – 70.2% HHV delivered efficiency).