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How to Measure Dishwasher Depth?

Published in Kitchen Appliance Measurement 3 mins read

Measuring dishwasher depth is crucial to ensure a perfect fit in your kitchen cabinetry. It primarily involves determining the available space from the back wall to the front of your cabinets or countertop.

Why Accurate Depth Measurement is Essential

An accurately measured depth prevents installation headaches, ensures your new dishwasher sits flush with your cabinetry, and allows for proper door operation. Failing to measure correctly can lead to the appliance protruding unsightly, or even not fitting at all.

Step-by-Step Guide to Measuring Dishwasher Depth

To measure the depth for a new dishwasher, follow these steps carefully:

  1. Clear the Space: If an old dishwasher is present, remove it to provide a clear view of the opening. Ensure any debris or obstructions are cleared from the back wall and floor.
  2. Gather Your Tools:
    • A reliable tape measure
    • A notepad and pen to record measurements
    • A flashlight (optional, for dark spaces)
  3. Measure the Depth: This is the most critical step.
    • Position your tape measure at the back wall of the opening.
    • Extend the tape measure straight out to the front edge of your cabinets or countertop.
    • Crucially, measure from the deepest point at the back wall to the very front edge. This ensures you account for any pipes, electrical outlets, or structural elements that might protrude and limit the available space. This measurement will determine the maximum depth of the dishwasher that will fit within the allocated area.
    • Record this measurement precisely. It is often recommended to measure in multiple spots (e.g., top, middle, bottom) and use the smallest depth recorded to be safe.

Important Considerations for Depth Measurement

  • Pipes and Outlets: Always check for any water lines, drain hoses, or electrical outlets at the back of the opening. These can take up valuable depth. Most standard dishwashers are designed with a recessed area at the back bottom to accommodate these, but it's good to be aware.
  • Countertop Overhang: Ensure your measurement accounts for any countertop overhang. The dishwasher should ideally sit flush with the cabinet fronts, not the edge of the countertop.
  • Standard Dishwasher Depths: Most standard dishwashers are designed to fit into a space approximately 24 inches deep. However, compact or ADA-compliant models might have slightly different depths.
  • Integrated/Panel-Ready Models: If you're installing a panel-ready dishwasher, remember to account for the thickness of your custom cabinet panel when considering the overall projection from your cabinetry. The panel itself adds to the apparent depth of the appliance once installed.

Common Dishwasher Depth Range

Type of Dishwasher Typical Depth Range (inches)
Standard Built-In 24 - 25
Compact / 18-inch 22 - 24
ADA Compliant 22 - 24

Note: These are general ranges; always consult the specifications of your chosen model.

Tips for an Accurate Measurement

  • Measure Thrice: Double-check your measurements to prevent errors.
  • Round Down: If your measurement is between two standard sizes, it's generally safer to round down or choose a dishwasher slightly smaller in depth to ensure it fits.
  • Consult Product Specifications: Always compare your measurements to the exact product specifications provided by the dishwasher manufacturer. These often include detailed diagrams and required clearances. You can usually find these on the manufacturer's website or in the product manual.
  • Account for Air Gap (if applicable): Some plumbing codes require an air gap on the countertop for the dishwasher drain hose. While this doesn't affect the appliance depth, it's a related installation consideration.

By following these guidelines, you can accurately measure your dishwasher depth and confidently select an appliance that seamlessly integrates into your kitchen.