1 High efficency 2 High heat transfer area 3 Making counter flow 4 low cost Excellent for both water-source heat pump and water-cooled condenser applicationsHighly effective convoluted inner tubes of copper or cupro-nickel,shell tube is carbon steel Fifteen standard sizes for 1/2 through 30 ton systemsAvailable in helix, spiral and trombone shapesU.L. and C.S.A. approvedISO 9001:2008 certified

Sprial coaxial Condensing unit coils used for heat pump