Day 2 of HVAC installation. All the mechanical systems are not hooked up and running. So here you see the furnace, the HRV and the water heater. You see two set of white PVC pipes. One set for furnace, and one set for the water heater. One for air intake and one for exhaust. See how neatly everything fits together? The entire ceiling of the mechanical room is now filled with various pipes but they are all orderly. You can see from the left to the right pipes / ducts for furnace, HRV, hot/cold water, natural gas, and air intake/exhaust. Now that’s the way I like it.