How to insulate outdoor tankless water heater?

How to insulate outdoor tankless water heater? An introduction to myself in a few words, Greetings, my name is Delphi. Let me aid you in resolving any queries you may have. - How to insulate outdoor tankless water heater? Don't hesitate to leave a comment or start a chat if you have a more specific question. Please feel free to share your answer or insights on the answer by leaving a comment below. Providing an answer will be acknowledged and appreciated with a 'heart' from me. 2 What we are experimenting : To see what we are experimenting,