Air gap required for all dishwashers?

Question

Do all automatic dishwashers require that an air gap be installed by the kitchen sink, or is that only for the older model dishwashers?

Answer 1

I assume you are talking about an air gap in the drain line. Yes, this is for all dishwashers. It prevents the drain from backing up into the supply lines, possibly contaminating them.

Answer 2

It depends on your local plumbing code. If you do not install the air gap the drain hose must be fastened up as close to the counter top as you can get it to prevent water from the sink siphoning back into the dishwasher.

Answer 3

I just installed a dish washer for my wife and I installed it first with out the air gap and had really big problems so I just the main drain line and installed the air gap in place with a special pipe you can buy from home depot

Answer 4

IT DEPENDS , SOME STATES REQUIRE YOU TO HAVE ONE BUT YOU DONT REALLY NEED IT, I AM A PLUMBER AND DO NOT INSTALL THEM ALTHOUGH YOU DO NEED TO HOLD YOUR DRAIN HOSE UP UNDER THE KITCHEN SINK CLOSE TO THE TOP WITH A HANGER OR SOMETHING ELSE SO THE WATER DOES NOT DRAIN DRY OUT OF YOUR PUMP.

Answer 5

you don't need a vent for dishwashers. you only need the vent through the counter if you have a garbage disposal.

Answer 6

No they are not reguired, unless the drainage cord is to long or must be twisted to fit under the counter.
delf

Answer 7

why a need for a dishwasher? a waste of water, electricty and time... wash them yourself!

Answer 8

if u had one installed before just follow the old install... if installing new to ur kitchen, we hook ours straight into the side of the disposal. lic. gen. contractor