Your business depends on a reliable gas and equipment supplier that can deliver the gases you need, and offer the technical support and expertise you need. Convenient online ordering and next business day delivery, available in select locations, puts your needs first. Our reputation is built on competence, quality, and safety. Thatís because the Tech Air Companies have been providing medical, industrial and welding gases to our customers throughout the United States for decades. Our commitment to our standards has never wavered, nor has our promise to superior service and safety.