We at Petra are committed to customer driven product developments. Our R&D teams are dedicated to continuously improve product performance, efficiency and cost effectiveness. Living up to this commitment, Petra’s R&D facility is equipped with state of art equipment designed to test for noise levels, airflow, and the thermal ratings according to applicable ARI, ARCA and AHRAE standards. Additionally Underwriters laboratories and ITS/SEMKO (ETL) have accredited Petra’s labs for conducting A/C equipment testing according to applicable UL standards.