Thanks for the reply HM. The big old farmhouse you mentioned pretty much describes our 4800 sf old place. When/if I add storage it will be in the boiler barn where all the piping is 1 1/2" black iron. So I can easily run 1 1/2" to storage for those short runs if needed. I started another post specifically asking about the flow velocity in my PEX with the 0013 and EWD assured me I'm ok at a little over 6 fps. Appreciate the inputs from you guys who are installers helping those of us DIYs. Bottom line I now feel good about foaming my existing PEX and restoring my lawn for the last time.