... heating capacity:6.5kw,8.5kw,12kw, 18kw, 21kw, 25kw, heat exchanger titanium in PVC 5/8INCH water exchanger unitAXHE-heating ... capacity:6.5kw,8.5kw,12kw, 18kw, 21kw, 25kw,heat exchanger titanium in PVCRefrigerant connection in and out size: 5 ... titanium heat exchanger but also supply the products like coaxial heat exchanger, shell and tube heat exchanger, etc. High efficient air to water heat exchanger ...