I'm doing some design work both large and small and was looking at these two manufacturers Heat recovery systems. From what I can find online both manufacturers have great products but I need a good comparison of the two. The Daikin I see has a three pipe system to the BS Boxes while the Cirty Multi's have a two pipe system. What are the advantages here? Also is there any difference in output temps in extremely hot or cold temperatures? Any info on this comparision would be a huge help in making my decision.