Installation Can I install a Neorest on my existing plumbing? YES – as long as you have a 12” Rough-in and your water supply is located approximately 11” off-center. Does the Neorest work with a 10” or 14” rough-in? NO (not yet). Do I need special plumbing/wiring to use the Neorest? NO – the water supply connection is standard ½ inch, and the unit plugs into a standard 120 Volt AC (GFCI (fused)) outlet. What is the required WATER PRESSURE? You need a MINIMUM of 20PSI. The MAXIMUM is 80PSI Use a minimum water supply pressure of 10PSI (0.07Mpa) flowing. (Warranty valid only if the water pressure is between 20 and 80 PSI). I want to install a shelf above the toilet – how much clearance should I have? Toto USA recommends at least 10” of clearance above the top of the Neorest.  Note: that this may effect the remote control’s placement in the bathroom.