Sluggo
Member
I'm hooking up a small tankless water heater to 3/4" copper supply lines and would like advice on the best choice for the flexible 18" connection hoses I'll need. It looks like the most common types are the corrugated copper hoses, the corrugated stainless steel hoses, and the PVC ones covered with stainless braid. Please tell me your preferences on which seem to give the best long-term service, and/or whether you have had bad experiences with any of these. Thanks.