Each Techno-Solis Panel produces a staggering 1,006 BTU per ft² per day. First to Achieve OG-400 Certification. We are among the first manufacturers to earn this distinction. The certification proves compliance with the ICC 902/APSP 902/SRCC 400 Solar Pool and Spa Heating System Standard. Provides extra strength allowing our panels to withstand hurricane force winds! Our panels are 35% thicker than any other panel for superior durability and longer life. Create insulation that reduces heat loss. Other panels allow heat to escape between the tubes, cooling the water down. Once our panels are installed, there is no additional maintenance or cost involved. You just sit back and relax in your refreshingly warm swimming pool.