When Is the Best Time to Buy a Dishwasher?

Which months are cheapest for a dishwasher?

Dishwashers don't have a discount cycle of their own — they track the same four major-appliance sale weekends that drive most of the kitchen: Presidents' Day in February, Memorial Day in May, Labor Day in September (September 7 in 2026), and Black Friday/Cyber Monday in November. Underneath those four spikes sits the same fall model-year changeover that affects most kitchen appliances, which is why September and the run into November tend to be the strongest single stretch of the four.

Why do spring and summer sit at full price?

March through August, outside the Memorial Day weekend itself, is the weak run — peak home-renovation and moving season keeps demand (and prices) up, and it's the stretch furthest from the fall changeover.

Is it cheaper as part of a kitchen suite?

Dishwashers are one of the more commonly bundled kitchen appliances — buying one alongside a range or refrigerator sometimes unlocks a bundle discount on top of whichever seasonal sale is running, since retailers have their own incentive to move a full kitchen suite in one sale rather than one appliance at a time.

How do you size it correctly before shopping?

Dishwasher capacity is measured in place settings — a standardized unit covering a dinner plate, salad plate, bowl, cup, saucer, and flatware for one person. Compact 18-inch models typically handle 8 to 10 place settings, standard-width dishwashers run 12 to 14, and oversized 30- to 42-inch models are rated for 16 or more. As a rough household guide: 6 to 9 place settings is usually enough for one or two people, 9 to 12 covers a household of three or four, and five-plus people generally benefit from 12 or more. It's worth keeping in mind that place-setting ratings assume ideal spacing and uniformly sized dishes, so a "large capacity" rating doesn't always translate directly into fitting your actual mixing bowls, sheet pans, and oversized mugs — measure your real dish collection, not just the label.

Can Energy Star rebates stack with the sale?

Beyond the seasonal sale calendar, a separate layer of savings comes from local utility rebate programs for ENERGY STAR-certified dishwashers — these are run by individual electric and gas utilities rather than a single nationwide program, so the amount varies by provider. Programs found in utility rebate listings range from around $25 (FirstEnergy's Pennsylvania utilities, Otter Tail Power) up to $80 (PNM), with $30 rebates also common (PSE&G). Most require submitting proof of purchase, often a photo of the receipt, through an online portal within about 90 days of buying the unit — so if a rebate is part of your budgeting, confirm your own utility's program and its purchase-date cutoff before you buy, since terms reset with each program year.

How loud is too loud in decibels?

Dishwasher listings advertise a noise rating in dBA (A-weighted decibels), and the scale isn't intuitive: because decibels are logarithmic, every roughly 10 dB increase doubles how loud a cycle sounds to the human ear. Ratings in the high 30s to low 40s dBA are generally marketed as "quiet," while 50 dBA and up is considered an average, noticeable-in-an-open-kitchen level. Consumer Reports notes that it doesn't rely solely on manufacturers' own decibel figures, which are typically an average across the full cycle — instead its testers listen through an entire cycle, since a brief loud pump-out or drain moment can stand out more than the averaged number suggests. Paying up for the quietest tier makes the most sense in an open-plan kitchen or one that backs onto a living or dining area; in a closed kitchen or one with a door, a mid-range decibel rating is usually not something you'll notice.

What does installation actually cost?

The purchase price is only part of the total cost. Replacing an existing dishwasher in a cabinet that already has water, drain, and electrical hookups typically runs $150 to $500 in labor, since the connections are already in place. Installing a dishwasher where none existed before is a different project: without existing hookups, running new water and drain lines can add roughly $300 to $600, and wiring a dedicated circuit can add $500 or more on top of that — pushing total labor into the $300 to $1,300 range. Relocating a dishwasher to a new spot in the kitchen is the most expensive version of this, adding around $1,600 beyond the appliance and standard installation cost. The simplest way to keep costs down is buying a replacement with the same width and depth as your current unit, so it drops into the existing opening without any of that extra plumbing or carpentry work.

Which installation mistakes erase the savings?

A discounted dishwasher stops being a deal if the installation goes wrong. The most commonly cited errors are measuring the appliance opening but not the delivery path — hallways, stairwells, and doorways the unit has to physically pass through before it ever reaches the kitchen — and failing to fully level the unit once it's in place, which can cause incomplete draining or door leaks over time. On the plumbing side, a missed drain-line knockout plug is a frequently reported DIY mistake, and rushing the install to get the new unit running the same day it arrives is commonly flagged as a way installers and DIYers introduce damage or skip testing the unit before considering the job done. Running a full test cycle before you consider the installation finished — rather than after the installer has already left — is the simplest way to catch a problem while it's still easy to fix.

Are open-box units a better deal?

If you're flexible on finish and willing to wait for the right unit to turn up, scratch-and-dent and open-box listings are a way to buy outside the seasonal calendar entirely. The two aren't the same thing: scratch-and-dent units have never been sold or used — the discount is for cosmetic damage picked up during shipping or handling — while open-box units are typically customer returns that may have been briefly installed or used before coming back to the store. Retailer guides describe discounts anywhere from roughly 10% to 50% or more off the original price, though the range varies enough by retailer and damage severity that it's not a number to plan a budget around precisely. The trade-off is selection: because inventory depends on what happened to arrive damaged or get returned, you generally can't special-order a specific color or model this way. Buying from a retailer that still backs the unit with the manufacturer's standard warranty is the detail worth confirming before paying — most reputable sellers do carry it over.

Is an extended warranty worth it on a dishwasher?

Sources actually disagree on this one, and it's worth knowing both sides rather than picking one with false confidence. Consumer Reports' consumer-facing guidance has been skeptical of extended warranties broadly, on the reasoning that modern appliances are fairly reliable, that the odds of needing a covered repair inside the warranty window are low, and that a repair bill — if one does come up — often isn't dramatically more than what the warranty itself cost. Other appliance-industry sources push back specifically on dishwashers, noting they run more duty cycles than most kitchen appliances and combine mechanical parts (pumps, seals) with electronics in a way that some retailers say makes them more repair-prone than, say, a refrigerator. A commonly cited rule of thumb, when a warranty is being considered at all, is to skip any extended plan priced above roughly 15% to 25% of the appliance's retail cost — past that point, the math tends to favor just self-insuring and paying for a repair if and when it happens.

How reliable is this dishwasher pattern?

This is one of the more consistently-reported appliance calendars across sources — Presidents' Day, Memorial Day, Labor Day, and Black Friday show up the same way in Consumer Reports' own tracking of appliance price patterns (which specifically notes dishwasher prices trending lower as Black Friday approaches) and in most independent retail trackers — a stronger consensus than some of the other appliance categories on this site get. What's genuinely uncertain is the size of the discount: specific percentage figures circulating online mostly trace back to marketing copy rather than verified data, so treat "40% off" style claims skeptically even when the timing itself checks out.

A model nearing discontinuation can still go on sale outside these four windows, and a brand-new release can hold firm through one of them — the calendar tells you when a retailer has the most reason to deal, not what a specific unit will cost on a specific day.

Related guides

Furnishing a full kitchen? Ranges and ovens share this same four-sale-weekend calendar, and refrigerators add a fifth window of their own in the spring.