How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
How far away from the sink can I install a dishwasher?
Sunday, October 6, 2019
Most manufacturers specify a 12-foot maximum. Some state it as “distance to drain,” while others specify it as the length of the drain hose, which is more restrictive because the hose must rise up to the bottom of the counter top for a “high drain loop” or “air gap,” and then back down to the drain, which uses additional hose length.
Also, the height of the drain connection should not be more than 6-feet above the bottom of the dishwasher. It's more difficult for the dishwasher to pump the discharge vertically than horizontally, but this restriction is not a problem in most installations.
An excessively long drain hose is more likely to clog over time and/or overload the dishwasher pump motor. See our blog posts Can a dishwasher drain hose be connected after the sink trap (to the trap arm)? and Can a dishwasher be wired to a kitchen counter small appliance receptacle circuit? for an explanation of two common installation defects.
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