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Why Are There Spots on My Dishes After I Use My Dishwasher?

glasses with hard water spots

If you've ever opened your dishwasher to find spotted, cloudy, or streaky dishes, you're not alone. This is a common problem that many homeowners face, and it can be frustrating to deal with. Fortunately, there are several things you can do to prevent and fix this issue. In this blog post, we'll explore the reasons behind spots on your dishes and provide practical tips on how to get rid of them.

Reasons for Spots on Your Dishes

1. Hard Water: Hard water is one of the most common culprits behind spots on your dishes. When your water contains high levels of minerals like calcium and magnesium, it can leave behind residue on your dishes, resulting in spots.

2. Rinse Aid: If you're not using rinse aid in your dishwasher, your dishes may be more prone to spots. Rinse aid helps to prevent water droplets from forming on your dishes, which can lead to spots.

3. Detergent: The type and amount of detergent you use can also impact the appearance of your dishes. If you're using too much detergent, it can leave behind a residue that causes spots. Similarly, if you're using a low-quality detergent, it may not be able to effectively remove all the dirt and grime from your dishes.

Tips to Fix Spots on Your Dishes

1. Use a Rinse Aid: Adding a rinse aid to your dishwasher can help to prevent spots on your dishes. Rinse aid works by reducing surface tension, which allows water to run off your dishes more easily.

2. Use the Right Detergent: Choose a high-quality detergent that's designed for use in dishwashers. Look for a product that's specifically formulated to remove hard water stains and spots.

3. Clean Your Dishwasher: Over time, your dishwasher can become clogged with food particles, detergent residue, and hard water buildup. This can impact the performance of your dishwasher and lead to spots on your dishes. To prevent this, clean your dishwasher regularly using a dishwasher cleaner.

4. Install a Water Softener: If you have hard water, installing a water softener can help to reduce mineral buildup and prevent spots on your dishes. A water softener works by removing minerals like calcium and magnesium from your water supply.


Spots on your dishes can be frustrating, but they're not impossible to fix. By following the tips outlined in this blog post, you can prevent and eliminate spots on your dishes, leaving them looking clean and shiny. If you're still experiencing issues with spots on your dishes, it may be time to call in the professionals.

At Tri-City Heating and Cooling, we offer expert dishwasher repair and maintenance services to help keep your appliances running smoothly. Contact us today to learn more!