Dishwasher installation: a guide for pros

What customers ask, how to win the job, and what to put on your profile.

Offering dishwasher installation

You install dishwashers, connecting supply, drain and power, then leveling and securing the unit and proving it runs leak free. Customers remember installs that go in cleanly and do not drip.

What customers ask

  • Can you install the dishwasher on my existing water and drain lines?
  • Do I need an air gap on the drain?
  • Will the new unit fit my cabinet opening?
  • Do you take away my old dishwasher?
  • Who does the power connection if it needs to be hardwired?

How to win the job

  • On the first call, ask for the model number, the cabinet dimensions and a photo of the sink and supply area, then confirm what fittings you need.
  • Bring supply lines, drain hose, an air gap kit, mounting brackets and a level, so you do not need a second trip.
  • Check the install guide for the high loop or air gap requirement before you connect the drain.
  • Run a full cycle and check each connection with a dry paper towel before you leave.
  • In the quote, list each connection, the parts it needs and which licensed trade does any electrical work.
  • Show the customer how the door latches, how to load the racks and where the filter is.

What to put on your profile

  • Photos of finished installs with level units, clean connections and neat drain routing
  • The dishwasher brands you install most, listed by name
  • Whether you handle removal and disposal of the old unit

Follow-up that helps the customer

  • Offer a leak check a week after the install, once fittings have settled
  • Suggest checking the drain air gap and the supply hose once a year
  • Remind the customer to run the cleaning cycle the manual recommends

Licenses and permits

Dishwasher installs involve water and drain connections that often require a licensed plumber, and hardwired power can need a licensed electrician. Check state and local rules with your licensing agency before taking this work.

Questions

Do I need a plumbing license to connect a dishwasher?

Requirements vary. Many areas require a licensed plumber for water and drain connections. Check with your state or local licensing agency before you do the work, and refer any electrical hookup to a licensed electrician.

How do I get leads on infinibell?

Pros join free and pay only for the leads they accept. You can decline any lead for free. We review profiles before they go live, and the Insured badge shows once we have checked your current insurance.

About this guide

This national guide is written and checked by infinibell. Rules and conditions differ by place, so local pros are credited on guides for the cities they serve, not on national ones.

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