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Re: air gap in newer dishwashers
Before jumping on the "air gap" bandwagon and start writing them up, and to say yourself from looking foolish ...
First check to see if the dishwasher drain hose is installed with a high loop (high point of the drain line up near the underside of the countertop) - if that is there, that is *most likely* all that is required. If that is not there, then there still may be a high loop built into the drain line where it exits the dishwasher and is attached to the side of the dishwasher - many dishwashers today only require the top of the high loop to be 21" (and some are even less than that) above the floor), meaning that just because you do not see a high loop on a newer dishwasher does not mean it is incorrect.
In over 16 years of inspections before I retired from home inspections, I have *NEVER* seen an air gap installed - just high loops.
Even if your code *requires* an air gap device, your code also likely says that all appliances must be installed according to the manufacturer's installation instructions, and if those specify a 'high loop', or, an 'air gap *or* a high loop', then no air gap is needed.
Thus, "air gaps" dropped almost completely off my list - it was replaced with "high loops".
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