Dishwasher Installation Cost Calculator

A like-for-like replacement using existing rough-in connections is the cheapest scenario - labor runs $110-$180 with minimal materials. First-time installation is the most expensive because it requires new rough-in work: a licensed plumber must tap into the hot water supply line, add a drain air gap, and a licensed electrician must run a dedicated circuit. Combined trades can push the total to $400-$600 before the appliance itself, and some jurisdictions require permits for new rough-in work.

If the existing supply line is galvanized, kinked, or the wrong size, it needs replacing before the new dishwasher is hooked up. A standard 3/8-inch braided stainless supply line costs $15-$30 in materials; labor to reroute or extend the drain hose to a disposal or basket strainer adds $50-$150. Adding or replacing the angle-stop shutoff valve under the sink costs $75-$150 for labor plus parts. Any of these extras turn a simple swap into a mid-range job.

Most dishwashers require a dedicated 120V/15A or 20A circuit. If one already exists at the dishwasher location (common in homes built after 1990), electrical work is limited to connecting to the junction box - typically $0-$50 in labor. If no dedicated circuit exists, a licensed electrician must run a new circuit from the panel: materials and labor run $150-$400 depending on panel distance and local rates. Some municipalities require this work to be permitted and inspected.

Many appliance retailers and installers charge a separate fee to haul away the old dishwasher. Big-box store add-on haul-away typically runs $30 for self-purchased appliances. Independent plumbers and handymen may charge $50-$75 if they need to transport the unit themselves. If you can wheel the old dishwasher to the curb or a recycling center yourself, you can skip this cost entirely.

Most standard 24-inch dishwashers install identically regardless of brand - Bosch, Whirlpool, LG, and GE use the same supply and drain connection standards. However, some European-style units require specific drain pump configurations or side-mount brackets instead of top-mount brackets, adding $25-$100 in labor time. Dishwashers with built-in food disposers (rare) or steam-clean features may also require additional electrical connections that increase install time.