The dishwashers being made today aren't like dishwashers of the past. Dishwashers made as recently as 1997 used very large motors that practically sandblasted your dishes clean and then reversed direction to pump the water out. They used a lot more energy and water than the dishwashers being made today. They also lasted much longer and weren't as prone to having problems with mineral buildup inside of them. And if you had a dishwasher not cleaning dishes it was much simpler to figure out if you indeed need a dishwasher repairman. Or even just to figure out what was the best dishwasher soap to use for cleaner dishes.
Because of new E.P.A. regulations that came into effect in 2015 all the manufacturers are making their dishwashers with much smaller dishwasher motors than they used to and they just don’t spray as hard as they used to. that don’t spray the water anywhere nearly as powerfully and a separate drain pump motor. So, for better or for worse, we’re all stuck with these lower pressure dishwashers.
One of the consequences of using these low-wattage pumps and motors is that they have to run longer to get your dishes as clean as the old dishwasher circulation pumps did. Whereas the dishwashers of the past would run for less than an hour, it’s not unusual for a new dishwasher to run for two or three hours. Although it seems counterintuitive, the newer dishwashers are still using less energy than the older ones even when they run two or three times longer.
But, like with everything, there’s a downside. If you have hard water the reduced water use and longer run times mean you’re going to get more mineral deposits on your dishes and in the guts of your new, Energy Star dishwasher. This can cause all kinds of wash ability and dishwasher cleaning problems for your dishes, damage to the dishwasher’s components, and increased energy consumption.
I get several calls a for poor washing complaints in newer dishwashers. When I go out on these service calls, I often find that there's nothing wrong with the from a mechanical dishwasher repair standpoint.
Most people really don’t know about how dishwashers work these days. Invariably, when I’m on a dishwasher service call, I find people making one or more of three common mistakes that almost all dishwasher owners make. As a result, they have wash ability problems: dishes don't get clean, film left on glassware and dishes, or glassware gets etched and cloudy.
So before we get into the Big Three Deadly Dishwasher Mistakes, let's do a quick overview of how dishwashers are “designed” to work.
Here's Nick listening to a customer's concerns about Kitchenaid dishwasher not cleaning in Olathe
Chemistry problems will involve one or more of these factors:
This leaking Whirlpool dishwasher in Overland Park needed the sump and spray motor replaced.
Mistake Number One:
Using a gel dishwasher detergent or a liquid dishwasher detergent.
Knowing how the newer soaps work and seeing all the dishwashers I see I truly believe the best dishwasher soap to use would be powdered soap. Whether you scoop it or it comes in a cube is good.
The main tasks of a detergent are to remove soil from surfaces and prevent the re-deposits of soils on the surfaces. The best detergent formulations will be powdered. Do not use gels or liquid detergents.
Why powdered detergent? Because in today's phosphate-free world, you need two types of cleaners in a detergent formulation to get dishes clean:
1. Enzymes to remove protein-based stains
2. Bleach to remove other stains
These two cleaners are incompatible with each other-- if they're released at the same time, the bleach will destroy the enzyme and, after this epic battle, there will be little or nothing left of the bleach to do even its little bit of cleaning. The result: dirty dishes. They can coexist in a powdered form because they are not activated until 1) they get wet and 2) the water temperature reaches 125 deg. F. In a liquid or gel form, everything is already wet so you're only getting one kind of cleaning action.
Detergent has a shelf life. Old detergent will not work well because the enzymes lose their effectiveness over time. Also, the detergent must stay dry until it's time to use it. Once it gets wet or even damp, it activates and will no longer be active when put to work inside the dishwasher.
Mistake Number Two:
Pre-rinsing dishes
It is not only okay to put dirty dishes into a dishwasher, it is mandatory to properly activate the detergent! Detergents are designed to work with food soils, not clean water. The enzymes in the detergent need the food soils in order to be properly activated. Scrape off the big chunks but leave the gravy, the sauce, the egg yolk, etc. Without the food soils, the detergent will create a caustic slurry inside the dishwasher which will etch the glassware by removing the silica from the glass.
Not only that, but pre-rinsing the dishes wastes water. The Department of Energy estimates that pre-rinsing dishes uses 20 gallons of water per load. Scrape the chunks off with a fork and leave the rest on the dishes. It's a dishwasher! Let it do what it was designed to do!
Mistake Number Three:
Not scraping the chunks of food or solid debris off the plates before loading them into the dishwasher
Taken together, these last two mistakes are a great illustration of the saying, "The opposite of dysfunction is dysfunction." People tend to fall into one camp or the other: they're either OCD pre-rinsers or they use the dishwasher as a garbage disposal.
You wouldn't believe some of the junk we've pulled out of dishwashers! Here's a short list of some of the things we've dredged up from deep within the bowels of broken dishwashers:
Today's weaker dishwashers can't handle hard solids and these things end up damaging the mechanical components of the dishwasher such as breaking the chopper or binding the wash motor impeller.
So there you have it, the Big Three. Almost every dishwasher service call we go out on, the customer is doing at least one of the three.
Since you read through to the end of this page, here are a few bonus tips for getting the best performance from your dishwasher:
This is Nick doing a GE dishwasher repair in Shawnee for a dishwasher not draining.
Nutterman's Appliance Repair Johnson County
Overland Park, Olathe, Lenexa, Shawnee
It’s not an option with today’s weak dishwashers. Rinse aid allows the dishwasher to use less water with the same amount of cleaning and drying effectiveness. It does this by creating what is called “sheeting action” of the water. By making the water sheet along dishes, rather than cluster into beads, it evaporates faster and with less energy.
No tools needed! Regularly using a dishwasher cleaner (Dishwasher Magic or Glisten) and performance booster (Finish Glass Magic) to clear out the gook and reduce the build-up will keep your dishwasher clean and fresh smelling and operating at peak performance.
Finish® All in 1 Powerball® Tabs are (I believe and most dishwasher manufacturers do too) the absolute best dishwasher soap to use in today's dishwashers.
Run the hot water faucet next to the dishwasher until the water is flowing hot. Today's dishwashers use much less water so many times it will be full before the hot water ever gets there. So you're washing your dishes with cold water. With the type of soap we use and the less powerful motors it's really important that the water is nice and hot. And since it's so much less water you want it nice and hot immediately when it starts to fill with water.