Reverse Osmosis + Instant Hot

[aschwa]

Hi all-

I'm trying to hook up a reverse osmosis unit to an instant hot. Typically, the faucet that comes with the RO unit functions as an air gap, but since I'm using the instant hot, I won't be using the RO-provided faucet.

Can I just do a high loop instead of using an air gap? An air gap is presumably a bit safer, but it seems that plenty of folks use the high loop method with their dishwashers without any trouble. Is there any reason that a high loop is OK for a dishwasher but not for a RO system?

Thanks,
Andrew