Mark Klug Amy Church Dishwashwer, Surprise AZ (C) Daniel Friedman Dishwasher Mistakes to Avoid
Starting point for checking out a dishwasher installation

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

Dishwasher installation inspection, troubleshooting & repair suggestions: this article describes several quick inspection points and tips that can head off dishwasher troubles with leaks, drain siphoning, electric shock, and mice infestations. We link to additional articles on residential dishwashers including the impact of dishwashwers on the septic system or soakaway bed.

Green links show where you are. © Copyright 2015, All Rights Reserved.

Some Diswhwasher SNAFUs to Avoid

Horrible Dishwasher Drain Hook-Ups

Daniel & Jennifer's Dishwasher Poughkeepsie (C) Daniel Friedman Daniel & Jennifer's Dishwasher Poughkeepsie (C) Daniel Friedman

Our own dishwasher shown at above left is installed atop a concrete slab and drains out through the adjacent sink trap.

But at above right we illustrate a different and horrible dishwasher drain arrangement: the isntaller just dumps the dishwasher into the crawl space beneath the home: an invitation to rot, mold, insect damage. Don't do that.

Mouse Hotel Below the Dishwasher

When inspecting dishwasher drains and drain connections keep an eye open for mouse poop (below left). Nice big openings left between and beneath kitchen cabinets make it easier for the plumber to route dishwashwer drain lines but they may also creat a winter resort hotel for local mice. Mouse droppings are not the cleanest environment for your dishes and eating utensils.

Mouse doo doo below the dishwasher (C) Daniel Friedman Mouse doo doo below the dishwasher (C) Daniel Friedman

Dishwasher installation instructions require the high-routing for the dishwasher flexible drain line connection shown at above right.

Dishwashwer supply & wiring hookup passage (C) Daniel Friedman Eric Galow

This high routing avoids an accidental drain siphon problem (back-draining from a sink into the dishwasher drain line) and it also combines a high location in the cabinet wall with a small penetration opening that make mouse passage more difficult in either direction.

Our phot at left shows a typical dishwasher installation in a new home: while the drain connection (not shown) was routed high and to a sink trap appliance drain tee, the electrical wiring and water supply line were routed through a conveniently big hole in the cabinet side near the bottom.

We like to caulk or seal this opening using spray fire caulk or equivalent as a draft and mouse barrker.

Photo courtesy Eric Galow, Galow Homes, Poughkeepsie, New York.


Shock Hazards at Dishwashers

Watch out: while the owner (me) served honest notice to potential home buyers that the dishwasher was not in working condition - leaving a note in and on the appliance, I got a nasty shock while rummaging around beneath the dishwasher trying to get it working.

Don't go reaching into a wet area containing live wires and plumbing and pipes connected to an electrical ground. Especially if the floor beneath the dishwasher is wet.

Note indicating the dishwasher is not working (C) Daniel Friedman Note indicating the dishwasher is not working (C) Daniel Friedman

Also see DISHWASHERS vs SEPTICS for a discussion of the impact of dishwasher water volume or dishwashing detergent on private septic sysetms and soakaway beds.


Continue reading at DISHWASHERS vs SEPTICS or select a topic from the More Reading links or topic ARTICLE INDEX shown below.


Suggested citation for this web page

DISHWASHER SNAFUS at - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

More Reading

Green link shows where you are in this article series.


OR use the Search Box found below at Ask a Question or Search InspectApedia


Frequently Asked Questions (FAQs)

Click to Show or Hide FAQs

Ask a Question or Search InspectApedia

Use the "Click to Show or Hide FAQs" link just above to see recently-posted questions, comments, replies, try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.

Search the InspectApedia website

HTML Comment Box is loading comments...

Technical Reviewers & References

Publisher's Google+ Page by Daniel Friedman

Click to Show or Hide Citations & References

Support & See Fewer Advertisements

From Google's Contributor website: Contribute a few dollars each month. See fewer ads. The money you contribute helps fund the sites you visit.

Google-Contributor supports websites while reducing advertisements. You can support InspectApedia with a contribution of any amount you wish. Or you can contribute nothing and we'll still keep our website free to all readers - supported by advertising. Either approach is OK.