The Trane air conditioner valve defect class action lawsuit asserts that Trane should have replaced the device to effectively fix the problem. Found insidePacked with valuable information on how to: develop an indoor air quality building profile; create an indoor air quality management plan; identify causes and solutions to problems as they occur, and identify appropriate control strategies. The company claimed to sell “America’s Most Reliable™ HVAC System.” As quoted in the complaint, the company’s website claimed, “We don’t just build our products—we own patents on them.