Appliance guide

Dishwasher repair or replace: the shortest lifespan, the cheapest repairs

Nov 16, 2026 · 7 min read

Dishwashers sit at an awkward intersection: they have the shortest expected lifespan of the major appliances — 9 years in the NAHB study — while also offering some of the cheapest common repairs. That combination makes the decision genuinely two-sided. The same three checks apply: age, the 50% rule, and cost per remaining year, all runnable in the calculator.

Key takeaways

Expected lifespan: 9 years (NAHB, Feb 2007); industry range 9–16.
Typical repair: $75–$600, most around $225 (Angi, updated Oct 2026) — part-dependent, from a ~$75–$175 door latch to a ~$250–$600 motor.
New installed: $500–$1,300 (Angi), so the 50% line sits around $250–$650 — many single repairs fit under it.
Angi's own threshold: repair is "often the better choice" when the unit is under ~8 years old and the repair is under 50% of new price — which for a 9-year-lifespan appliance is nearly its whole life.

What actually breaks on dishwashers

Won't drain leads the list — check the filter and sump for glass, labels and gunk before paying anyone; that's genuinely DIY-safe once the machine is off. Door problems (latch, springs, gasket) are the cheap repair class, roughly $75–$175 per Angi's part-by-part figures. Pump trouble runs $150–$350, control boards $200–$400, and the wash motor $250–$600 — the top of the repair range, where the 50% rule starts biting. Leaking is usually a door gasket, a worn sump seal or (worse) a corroded tub — the last one is a replacement verdict on sight. Cloudy glassware or film is more often water chemistry (try a different detergent first) than a broken machine.

Repair-cost realities

Angi's dishwasher-repair guide (updated Oct 2026) is unusually specific, and worth internalizing as a shape rather than a promise: repairs spread $75–$600 with most homeowners near $225; labor runs $75–$125/hour; diagnostic or minimum service fees run $50–$80; and a new dishwasher, installed, costs $500–$1,300. Your metro, brand and part availability move every one of those numbers — so use the shape to sanity-check quotes, not to skip getting two or three of them (how to find a good tech).

The decision logic

Because the lifespan average is 9 years and a fitted new machine starts around $500, the arithmetic differs from washers and fridges. Younger than ~6 with a sub-$250 repair: repair, almost always — that's well under half of even the cheapest new install, with 3+ statistical years left. Age 7–9: run the per-year math — a $225 repair with 2 years left costs $113/yr while a $700 replacement over 9 fresh years costs $78/yr; the calculator surfaces exactly this kind of close call and labels it honestly. Past 9, or a second repair in a year: lean replace — you're outside the NAHB average (table) and each new repair buys fewer years. The fuller framework, including why the 50% rule alone can mislead, is in the 50% rule explained.

Safety lines

Dishwashers put water and mains electricity in one box: kill the breaker before pulling filters beyond the sump cover or touching anything inside the door. Leave heating-element, wiring and control-board work to a tech. And if the dishwasher shares a circuit that trips repeatedly, stop resetting it and get the circuit looked at — that's an electrical issue, not a dishwasher decision.

Sources

NAHB / Bank of America, Study of Life Expectancy of Home Components (Feb 2007), Table 1: dishwashers 9 yrs.
Mr. Appliance life-expectancy chart (industry range 9–16 yrs) — mrappliance.com.
Angi, How Much Do Dishwasher Repairs Cost? (updated Oct 2026, fetched 2026-11-16): $75–$600, most ~$225; labor $75–$125/hr; diagnostics $50–$80; new installed $500–$1,300 — angi.com.