Where is the air gap on my Bosch dishwasher?

Asked By: Jonattan PeriƱan | Last Updated: 11th January, 2020
Category: home and garden home appliances
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The air gap is a device in the drain line between the dishwasher and the sink drain, often emptying into the garbage disposal. It is an important health-safety item.

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Also question is, do you need an air gap for a Bosch dishwasher?

New dishwashers do have built in back flow devices. Yes According to the Bosch website,They are requiring air gaps per local codes to prevent backflow. “To prevent back flow into the dishwasher, connect drain line to an air gap or use a 30″ high drain loop, depending on local codes.

Also Know, do all dishwashers have an air gap? In some areas, a high loop is the minimum requirement, but in many other jurisdictions, an air gap must be installed with all new dishwashers.

Beside above, where is the air gap on a dishwasher?

A dishwasher air gap is a fitting mounted about two inches above the sink that prevents contaminated water from re-entering the dishwasher from the drain via backflow. An air gap is a simple way to make certain wastewater and contaminants never re-enter your clean water supply.

What happens if your dishwasher doesn't have an air gap?

GE: “If an air gap is not required, the drain hose must have the high loop from the floor to prevent backflow of water into the dishwasher or water siphoning out during operation.” This keeps the drain hose dried out and keeps any odors from backing up into the dishwasher.

31 Related Question Answers Found

Do I need an air gap for my dishwasher in California?

One of the many questions our Southern California plumbers are asked is if an air gap is a dishwasher necessity. Therefore, most safety codes require plumbers to install an air gap. Some might suggest the use of a “high loop,” where the dishwasher is connected to the sink drain through the highest point under the sink.

Is an air gap required in California?

Some areas, SoCal, require the countertop air gap. The CA Code is written in a manner that prohibits any method other than an air gap, installed above the flood level of the sink. There may be jurisdictions that don't enforce the rule, but the CA Code is clear: 414.3 Drainage Connection.

What is an air gap for dishwasher?

An air gap, as it relates to the plumbing trade, is the unobstructed vertical space between the water outlet and the flood level of a fixture. A common use of the term "air gap" in home plumbing refers to a fixture that provides back-flow prevention for an installed dishwasher.

Why does a dishwasher need a high loop?

GE: "If an air gap is not required, the drain hose must have the high loop from the floor to prevent backflow of water into the dishwasher or water siphoning out during operation." This keeps the drain hose dried out and keeps any odors from backing up into the dishwasher.

Are Bosch dishwashers hardwired or plug in?


Bosch dishwashers (300 ,500, 800, 800 Plus* series) now have a new electrical installation process. A proprietary connector to plug into the dishwasher in the rear. power cord for easy and compliant connection to electrical receptacle.

What is a high loop on a dishwasher?

? The purpose of the "high loop" or a separate "anti-siphon device" on a dishwasher is to prevent the drain waste water from the kitchen sink from entering the bottom of the dishwasher when draining the sink basins.

Why does water come out of my dishwasher air gap?

Water Coming Out of the Dishwasher Air Gap. When the gap leaks, it is normally due to a kink or blockage in the tube from the air gap to the tail piece (drain line) below the sink. The gap may need to be cleaned, or the drain line below the sink may be plugged.

How do I get rid of an air gap in my dishwasher?

To clean your air gap, follow the steps below:
  1. Remove the chrome cover of the air gap.
  2. Unscrew the plastic cap.
  3. Remove any material that may have accumulated.
  4. Check the hose from the air gap to the drain or garbage disposal to make sure it is not clogged.

How does an air gap work?

As with the faucet and the sink, an air gap separates the two hoses. If everything works properly, the dishwasher pumps waste water to the air gap where it's moved away by the drain hose to the garbage disposal. This may remove food particles interfering with the normal water flow.

How do I unclog my dishwasher line?


First, add the vinegar and baking soda solution to the dishwasher basket at the bottom. Let it sit for around 15 minutes and then pour in some hot water (boiling) to the basket to clear away the clog. Regular dishwasher maintenance is important to get good operation from your dishwasher and extend its lifespan.

Where is the drain inside a dishwasher?

It will look like a small cylindrical fixture mounted parallel with your kitchen sink faucet. Under the sink, in the cabinet, the dishwasher drain hose will feed into the top of the air gap so that the bottom of the air gap plumbs into the drain below the basket or into your garbage disposal, if you have one.

Why is there water left in the bottom of my dishwasher?

A dishwasher filter/trap/drainage basket that is clogged with chunks of food is the leading reason water remains at the bottom of a dishwasher. Water should never be in the dishwasher at the end of the wash cycle. At the end of the cycle, the dirty water is pumped out during the drain cycle.

How do I clean my dishwasher filter?

HOW TO CLEAN A DISHWASHER FILTER
  1. Remove the bottom rack of the dishwasher and locate the filter—a cylindrical tube that twist-locks into place—on the floor of the unit.
  2. Remove the upper, cylindrical filter first by twisting to unlock it.
  3. Hand-wash the filter(s) in warm, soapy water and rinse thoroughly under running water.

Can you run the disposal while the dishwasher is on?

Another urban legend floating around: You shouldn't run your disposal while the dishwasher is operating. This is false, experts say. Just be mindful of what and how much you put in there, and read your manual.

Does a dishwasher need an air vent?


It is not a "vent", it is a vacuum breaker. The purpose of an air gap in the dishwasher line is to prevent dirty water from a backed up sink from entering the dishwasher and contaminating your clean dishes. You don't need an unsightly air gap sticking out above the counter top, but the drain does need to be vented.

Should garbage disposal be on same side as dishwasher?

It's usually more convenient to install the garbage disposal on the same side as the dishwasher, for example. If the double bowl sink features bowls of differing size, consider installing the garbage disposal in the smaller sink and placing the smaller sink closest to the dishwasher.

How do you clean out a dishwasher?

Place a cup of white vinegar in a dishwasher-safe container on the upper rack of the machine. Run the dishwasher through a hot-water cycle. This will wash away grease and grime and remove musty odors, too. Baking soda rinse: Sprinkle one cup of baking soda across the bottom of the dishwasher.