@sundogplanets Insulation is an absolute. Frozen pumps are the worst. Get the proper drain pipes so you don’t belch into your sinks… My suggestion: Draw a map of how to set up your waterlines and pipes with proper dimensions for clearance in the space you have. Spaghetti does not play well with these appliances. Nothing against the walls. And yes, a bit of PTSD from my personal learning experience in this field.