In Europe, the Wagner Solar hot water and space heating systems repeatedly received top ratings during the last 3 decades and came out first in tests conducted by the national consumer testing agency “Stiftung Warentest”, the eco consumer organization “Ökotest” and independent testing institutes in 8 consecutive years. With the best performing package featuring an excellent Solar Energy Factor (SEF) rating of 21.7 under OG-300, the ECO BASICline is a top-performing system also under stringent SRCC testing procedures. For comparison: the US dept. of energy considers an SEF between 1 and 3 as “typical” for solar thermal systems. Hence the best BASICline package outperforms even the upper ranks of typical competitors by a factor of 7!
OG-300 System Certification is required by a number of U.S. state and federal incentive programs and will provide access to additional government funds towards the investment of a residential solar system.