Do Dishwasher Need Air Gap

Photo of author
Written By Elizabeth Anderson

Passionate and experienced foodie, traveler, and lover of all things home-related. Currently writing for a variety of blogs on recipes, cooking hacks, food politics and more!

An air gap is a physical separation between two different mediums, such as water and air. In the context of dishwashers, an air gap is a small hole or opening in the dishwasher that allows air to enter and exit. This prevents water from being siphoned back into the dishwasher, which could lead to flooding or water damage.

Many local building codes require dishwashers to have an air gap, so it is important to check your local regulations before installation.

Do I Need A Dishwasher Air Gap?…My States Plumbing Code says YES!!

If you have a dishwasher, you might wonder if it needs an air gap. The answer is maybe. If your dishwasher drains into a sink, then an air gap is not necessary.

However, if your dishwasher drains into a garbage disposal, then an air gap is required to prevent dirty water from backflowing into the dishwasher. You can buy an air gap kit at most hardware stores.

How to Hide Dishwasher Air Gap

If you have a dishwasher air gap in your kitchen, chances are it’s not something you want to show off. Luckily, there are easy ways to hide this eyesore and keep your kitchen looking neat and tidy. One option is to simply cover the air gap with a piece of tape or sticker.

This will give the appearance of a seamless countertop and will also help to prevent any water from coming out of the air gap. Another option is to purchase a decorative cover for your dishwasher air gap. These covers come in many different styles and colors, so you’re sure to find one that matches your kitchen decor.

Plus, they’re easy to install and will help keep water from escaping through the air gap. Whichever method you choose, hiding your dishwasher air gap is a simple and effective way to keep your kitchen looking its best.

Do Dishwasher Need Air Gap


Do New Dishwashers Come With Air Gap?

If you’re in the market for a new dishwasher, you may be wondering if it will come with an air gap. An air gap is a small device that helps to prevent dirty water from backing up into your dishwasher. While not all dishwashers come with an air gap, most newer models do.

So, if you’re looking for a new dishwasher with an air gap, you should have no problem finding one.

Do You Need a Dishwasher Air Gap If You Don’T Have a Garbage Disposal?

If you don’t have a garbage disposal, you might still need a dishwasher air gap. This is because without a garbage disposal, there is no way for water to escape from your dishwasher drain line. If your dishwasher doesn’t have an air gap, the water could back up into your sink and cause problems.

Which is Better a High Loop Or Air Gap for a Dishwasher?

There is no definitive answer to this question as it depends on a number of factors. Some people prefer high loops because they believe that water is less likely to backsplash and contaminate dishes. Others find air gaps to be more effective at preventing contamination, as they allow water to drain away from the dishwasher without any potential for backsplash.

Ultimately, it is up to the individual to decide which system works best for their needs.

Where Do You Put the Air Gap in a Dishwasher?

There is much debate on where the air gap should go in a dishwasher. The most common place is under the sink, but some people say it should go near the water heater. There are pros and cons to both sides.

Under the sink is the most common placement for air gaps. The main advantage of this location is that it’s out of sight and doesn’t require any extra plumbing. However, some people argue that putting the air gap under the sink can actually create more problems than it solves.

They say that if there’s a leak in the dishwasher, water can collect in the cabinet and cause mold or other damage. Putting the air gap near the water heater has its own set of advantages and disadvantages. One advantage is that it’s easier to plumb an air gap into existing lines if it’s placed near the water heater.

Additionally, this location is typically less likely to experience leaks since there aren’t as many potential sources of leaks (e.g., pipes) in this area. However, one downside to placing the air gap near the water heater is that it may be more visible than an under-sink installation – not everyone wants their dishwasher’s inner workings on display!


If you have a dishwasher, you’ve probably noticed the air gap on the back of the machine. This is a required piece of equipment in most states, but you may be wondering what it’s for and if your dishwasher really needs it. The air gap is there to prevent dirty water from your dishwasher from backsplashing into your sink.

It’s basically a small hole that allows air to enter the dishwasher while it’s running, which prevents a vacuum from forming and sucking water back up into the machine. While an air gap is not absolutely necessary, it’s a good idea to have one installed if your dishwasher doesn’t already have one. If you live in an area with hard water, the air gap can also help prevent mineral buildup in your dishwasher.

Leave a Comment