Evapco condenser elliptical coils are designed for maximum heat transfer area. Here 100% hea transfer through coil surface area, there is no usage of PVC fills in Evapco Condenser. The coils are manufactured from high quality steel tubing following the most stringent quality control, All evapco coil section tubes are join less, so no worry about welding leakages in tubes. Z-725 grade hot dip galvanization using for coil section, ie. 725 grams / m2 the entire coil assembly is dipped in molten zinc at a temperature of 427 deg C.