Trane and American Standard have a different approach to outdoor coil construction. Both believe in aluminum. Last year Trane introduced an era of all-aluminum matched systems. Building on its patented all-aluminum Spine Fin~(TM) condenser coils on outdoor units, Trane added its AlumaTuff~(TM) coil (pictured right, courtesy of Trane), which has aluminum tubes, tube sheets, and plate fins. The manufacturer said all-aluminum coils prevent formicary corrosion, rusty tube sheets, and helps avoid pinhole leaks. "Being corrosion- and rust-resistant, all-aluminum coils deliver on the promise of high efficiency over time, while assuring exceptional reliability," said Randy Scott, Trane vice president, product systems management.
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