Ability to work in a variety of circumstances, including but not limited to standing, walking, bending, kneeling, crouching, crawling, climbing ladders, scaffolds, and high-lift equipment; working in ducts, crawl spaces, roofs, basements, above ceilings, and in outside/inside/heat/cold/day/night conditions. As part of the Envelop Group family of companies, Quality Air Service (QAS) delivers quality driven, custom solutions, while focusing on partnerships to promote environmental balance, cost effectiveness, efficiency and superior customer satisfaction.