SE MI Feb 16, 2013 #4 Taking into consideration it is a 2nd story install, and currently quite quick, I'd recommend likely straight up. The shorter pipe, coupled with couple of turns, is requesting draft linked issues in case you go thru the wall. There is apparently a problem soon https://smithfieldhomesonthemarke11109.webbuzzfeed.com/37704342/evanston-house-prices-fundamentals-explained