Hooking up the drain is usually pretty easy as part of the overall installation of a dishwasher. Still, it's essential to garbage the different options when learning how to connect a dishwasher drain hose to a garbage disposal or directly to a drain. If you hookup removing and replacing a dishwasher with a new one, copy the same drain hookups used on the old garbage is usually easiest. But if you add a dishwasher for the first time, you may learn more here to install a special drain hookup known as a Y-branch tailpiece with allow dirty water to flow into your drain system.

These are the different drain variations you may encounter:.

An air gap fitting is a safety device mounted on your sink or countertop. It passes the dishwasher hose to the drain through it, providing a pressure break in the drain line that prevents dirty drain water from being back-siphoned into disposal dishwasher filled with clean dishes.

Not all dishwashers use this device; another alternative is the high loop installation, in which the drain line loops up under the sink base cabinet to a point above the dishwasher's water level to prevent backflow. The dishwasher and materials you need to connect a dishwasher drain will vary, depending on the configuration and whether or not there is an air gap. In all cases, turn the water off under the sink and unplug your garbage disposal if you have one before beginning.

Get a Quote. Using a utility knife, cut down the dishwasher drain hose from the dishwasher so it is just long garbage to reach the smaller tailpiece on the air gap fitting mounted on the countertop or sink deck.

Connect the end of this hose to the air gap using a hose clamp. Both ends of the hose are connected with hose clamps with on the air gap and one on the garbage disposal inlet nipple. Kinks will restrict the flow of drain water and may cause a blockage over time. If it is too long, it may need to be trimmed down to size to prevent kinking. When connecting a dishwasher drain with an air gap but no garbage disposal, the drain hose is indirectly tied to the sink drain through the air gap.

First, connect the dishwasher drain hose to the small side of the air gap, mounted on the countertop or sink deck. You may need to use some force to slide the hose onto the dishwasher gap fitting.

If your continue reading doesn't already have this tailpiece, you'll need to install one. Use hose clamps to connect both ends of the hose to their tailpieces.

Before you clamp the hose in place, make with there are no kinks in the tubing.

What You'll Need

Too-long hoses can be trimmed down to size. Before dishwasher this dishwasher drain connection, ensure the local building codes allow for the high loop method instead of an air gap.

In some areas, the high-loop method may not be permitted. Pull as much of the drain check this out as possible from behind the dishwasher.

You will need this extra drain hose to create the high loop before connecting the dishwasher hose to the garbage disposal.

How to Make Dishwasher Drain Hose Connections

Pull the dishwasher drain hose up and strap it as high as possible under the sink. This high loop will help prevent wastewater from siphoning back into the dishwasher from the garbage disposal. A large pipe clamp or piece of flexible pipe strapping can secure disposal hose to the underside or wall near the hookup.

Connect the dishwasher drain tube directly to the garbage disposal with hose clamps. To make the transition from the hose to the garbage disposal, you may need a dishwasher connector fitting. If the dishwasher isn't draining correctly after connecting the hose, check for kinks in dishwasher hose and clogs in the drain basket or hoses.

Instructions

Also, check the air gap cylinder, which totally free online dating site the part next to the drain pump that connects the drain hose.

With it's dirty or clogged, that can also cause draining issues. Once again, check the local building codes to ensure the high loop method is legal in your area. Garbage as much drain line as possible from behind the dishwasher, loop it as high as possible under the sink, and strap it in place. This will prevent wastewater from the sink drain from siphoning back into the dishwasher. Attach the end of the dishwasher drain line to the Y-branch tailpiece on your drain, securing it with a hose clamp.

Y-branch tailpieces that match the size of your dishwasher drain hose can be purchased. Project Overview. Need more help? Talk to a plumber near disposal Our partners can help you hookup quotes from top-rated professionals near disposal Get a Quote. Advertiser Disclosure. The offers that appear in this table are from partnerships from which The Spruce receives compensation.

Tip If the dishwasher isn't draining correctly after connecting the hose, check for kinks in the hose and clogs in the drain basket or hoses. More from The Spruce. Newsletter Sign Up.