Thinking about a new dishwasher? As these appliances get smarter and sleeker, one question keeps popping up: plastic or stainless steel tub?
The answer isn’t just about looks—it’s about how long your dishwasher will last, how quietly it runs, and how well it dries your dishes.
If you want a machine that’s durable, energy-efficient, and built to perform for years, the tub material matters. Plastic and stainless steel tubs each have their strengths, but they differ in ways that can affect your daily life—from noise levels to stain resistance and even safety.
With so many options out there, knowing the real-world differences helps you pick a dishwasher you’ll love without any buyer’s remorse.
In this guide, we’ll walk you through what sets plastic and stainless steel tubs apart, covering durability, noise, cost, drying power, and more. Let’s dive in!
What’s the Difference Between Plastic and Stainless Steel Tubs?
Let’s start with the basics: what exactly do we mean when we talk about a plastic vs. stainless steel tub?
Plastic Dishwasher Tubs
Plastic tubs are typically found in entry-level and mid-range dishwashers. The interior is made from high-density, heat-resistant plastic (usually gray or white), which lines the walls and bottom of the unit.
These tubs are lightweight, cost-effective, and durable enough for regular use, especially in households that run their dishwashers once a day or less.
Stainless Steel Dishwasher Tubs
Stainless steel tubs are commonly featured in higher-end and premium dishwasher models. This long-lasting dishwasher tub material is prized for its sleek look, quiet operation, and high heat resistance.
Stainless steel interiors are less porous, making them more hygienic and resistant to odors and staining over time.
Prevalence by Brand & Price Point
Plastic tubs are common in brands like Bosch, GE, and some models by Café. On the other hand, stainless steel tubs are found in premium lines from Monogram, Thermador, and high-end GE Profile and Bosch models.
Each tub type has strengths and trade-offs depending on your budget, lifestyle, and expectations.
➜ Learn More: Why Are 18 Inch Dishwashers More Expensive?
Durability and Lifespan Comparison
When investing in a dishwasher, one of the top concerns is how long it will last. This is where tub material plays a big role.
So, what is the average plastic dishwasher tub lifespan compared to a stainless steel tub? Let’s compare stainless steel vs plastic dishwasher durability.
Plastic Tubs: Decent Durability on a Budget
Plastic tubs can last for many years, especially if the dishwasher is properly maintained. However, they’re more prone to showing wear and tear over time, such as minor scratches from cutlery or racks, discoloration or yellowing from repeated high-heat cycles, and cracking risks with rough handling or aging materials.
For families who don’t run the dishwasher multiple times a day or aren’t concerned with pristine interiors, plastic is a perfectly serviceable choice.
Stainless Steel Tubs: Built for the Long Haul
Stainless steel tubs are known for their longer lifespan and superior durability, including better resistance to heat, steam, and long cycles; less warping or damage from heavy loads; and no risk of cracking.
The only potential downside? Stainless steel may develop water spots or hard water residue, though this doesn’t affect performance and can be easily cleaned.
Verdict:
Over a 5–10 year period, stainless steel tends to hold up better, especially in high-usage households. They may cost slightly more up front, but many experts say the extra cost is worth it.
How Quiet Is Your Dishwasher? The Role of Tub Material
Noise level is one of the most noticeable differences between dishwasher models, especially in open floor plans. Believe it or not, tub material makes a big impact on sound. So, how do these two options compare when it comes to plastic vs stainless dishwasher noise level?
Stainless Steel: Naturally Quieter
Stainless steel tubs are:
- Thicker and more rigid
- Better insulated against vibration and motor noise
- Often paired with sound-dampening insulation in premium models
The result? Stainless steel dishwashers often run at below 44 decibels, which is barely audible in most kitchens. They often operate at a noise level of as much as 10 decibels lower than a plastic tub.
Plastic: Slightly Louder
Plastic tubs are:
- Lighter and less dense
- More likely to vibrate or amplify motor sounds
- Typically found in machines with 50+ decibel ratings
While still quieter than older models from a decade ago, plastic tub dishwashers can be noticeable when running.
Bonus: Heat Retention Boosts Drying
Stainless steel’s ability to retain heat aids in drying, especially in condensation drying systems like those used in Bosch and Miele dishwashers.
Verdict:
For peace and quiet, stainless steel is worth the upgrade.
Are Plastic Dishwasher Tubs Safe?
A common concern among health-conscious shoppers is whether plastic tubs pose any safety risks, such as BPA leaching or chemical exposure.
Modern Plastic Tubs Are BPA-Free
Nearly all dishwashers sold in North America today use BPA-free plastics that are tested for high-heat safety. Brands must comply with rigorous safety standards to ensure they don’t leach chemicals into your home.
Still, for some buyers, the idea of using heated plastic daily creates concern, even with safe materials.
Stainless Steel for Peace of Mind
Stainless steel is inherently non-reactive and free of chemicals, which is why it’s used in medical and food-grade environments. If you’re looking for the safest, most eco-conscious option, it’s a solid choice.
Environmental Considerations
Another differentiator between a plastic vs stainless steel dishwasher tub is its recyclability. Plastic tubs can be more difficult to recycle at the end of their lifespan, while stainless steel is highly recyclable and often made with partially recycled content.
While both options are safe, stainless steel offers extra reassurance for those concerned with health and sustainability.
➜ Learn More: Standard Dishwasher Size: What It Is and How Much It Fits
Top Dishwashers with Stainless Steel and Plastic Tubs
We have plenty of built-in dishwashers to choose from, no matter your budget or preference in the plastic vs stainless steel dishwasher tub debate.
Keep reading to learn more about three of the best dishwashers with stainless steel tubs, along with three of the best plastic tub dishwashers from Arizona Appliance.
Stainless Steel Dishwashers
First, check out three top dishwashers with stainless steel interior.
GE 24” Fingerprint Resistant Stainless Steel Top Control Built In Dishwasher
Shop GE 24” Stainless Steel Top Control Built In Dishwasher
Upgrade your kitchen with the GE 24” stainless steel dishwasher, designed for whisper-quiet operation, effortless controls, and exceptional cleaning and drying performance.
With features like Dry Boost Technology and a redesigned third rack, it handles everything from everyday dishes to hard-to-dry plastics with ease. The bottle wash jets and steam + sanitize function ensure deep, hygienic cleaning, even for narrow or oddly shaped items.
Built to run quietly at just 45 dBA and equipped with optional Wi-Fi, this ENERGY STAR-certified dishwasher balances performance, efficiency, and modern convenience.
Top Features
- Dry Boost Technology for superior drying, even on plastics
- Third Rack with Removable Silverware Caddy for flexible loading
- Four Bottle Wash Jets for deep cleaning hard-to-reach items
Bosch 500 Series 24” Stainless Steel Top Control Built In Dishwasher
Shop Bosch 500 Stainless Steel Built In Dishwasher
Want a dishwasher that’s silent, efficient, and built to last? The Bosch 500 Series in stainless seel delivers top-tier drying and quality construction you’ll love.
Running at just 44 dBA, it’s whisper-quiet and even includes an InfoLight to let you know it’s on. The PrecisionWash system intelligently targets every dish for a thorough clean, while the AutoAir feature pops the door open at the end of the cycle for improved drying.
Backed by over 485 quality checks, this ENERGY STAR-certified model offers top-tier reliability and peace of mind with its 24/7 Overflow Protection.
Top Features
- PrecisionWash for intelligent, thorough cleaning
- AutoAir door release for 40% better drying
- EasyGlide Rack System with Flexible 3rd Rack for smooth, versatile loading
Thermador Star Sapphire 24” Custom Panel Top Control Built In Dishwasher
Shop Thermador Star Sapphire 24” Stainless Steel Dishwasher
Make every load effortless with the Thermador 24” stainless steel dishwasher—ultra-quiet at 42 dBA, with high-end features and performance that scream elegance.
The StarDry system with Zeolite ensures ultra-dry dishes—even in hard-to-reach spots—without chemicals or extra energy.
Its Zone Control Spray Arm and Chef’s Tool Drawer offer precise cleaning and flexible loading for everything from pots to delicate wine glasses.
With a sleek design that integrates seamlessly into custom cabinetry, plus smart controls via Home Connect, it’s a powerhouse wrapped in elegance.
Top Features
- StarDry with Zeolite for powerful, chemical-free drying
- Zone Control Spray Arm for custom cleaning zones
- WiFi-enabled with Home Connect for remote control and monitoring
Plastic Tubs Dishwashers
Here are our top three recommendations for high-quality plastic tub dishwashers.
GE 24” Fingerprint Resistant Stainless Steel Built-In Dishwasher
Shop GE 24” Stainless Steel Built-In Dishwasher
Tackle dish duty with ease! The GE 24” built-in dishwasher brings powerful cleaning and drying features designed to keep up with your busy household.
The Steam + Sani option loosens tough messes while eliminating 99.999% of bacteria, and Dry Boost ensures plastics and hard-to-dry items come out spotless.
With an AutoSense cycle that adjusts to soil levels and a quiet 52 dBA operation, it combines smart cleaning with peace and quiet. Its large capacity and adjustable upper rack make it perfect for hosting or big family meals.
Top Features
- Steam + Sani for deep cleaning and sanitization
- Dry Boost for better drying, especially on plastics
- AutoSense cycle for intelligent, efficient wash adjustments
⭐Featured GE Dishwasher Review:
"Dishes have come out great so far! Cycles are a bit long but that can be adjusted with the options selected. A lot can fit in the dishwasher. Overall very happy."
Cafe 24” Stainless Steel Drawer Dishwasher
Shop Cafe 24” Stainless Steel Drawer Dishwasher
Save space without sacrificing performance! The Café 24” drawer dishwasher offers a chic, compact solution with robust cleaning for your busy kitchen.
With six wash cycles and specialty options like Fast Dry and Ultra Dry, it handles everything from small loads to large family meals with ease.
The quiet operation (46–49 dBA) ensures a peaceful kitchen, while adjustable racks and a thoughtfully placed upper drawer make loading comfortable and efficient. Plus, its customizable finishes let you tailor the look to match your kitchen perfectly.
Top Features
- Small Load & Eco-Cycle settings for energy-efficient performance
- Ergonomic upper drawer for easy loading and unloading
- 46–49 dBA operation for a quiet kitchen
⭐Featured Café Dishwasher Review:
"I've only had it for about a month, but I absolutely love it. The double drawers are perfect for me since I live alone, but when the family all comes around we still have plenty of room. The first time I ran it, I thought it wasn't working because it was soooo quiet, if I hadn't heard my tankless water heater running I would not have known it was on. I am excited to add to the package and plan on buying the double oven gas stove next."
Bosch 100 Series 24” Custom Panel Built In Dishwasher
Shop Bosch 100 Series 24” Custom Panel Built In Dishwasher
Create a seamless kitchen with the Bosch 100 Series 24” custom panel dishwasher—enjoy consistent cleaning and a custom design that blends right in.
It uses PureDry technology to gently and efficiently dry dishes without external air or an exposed heating element, which is ideal for plastics.
With a quiet 48 dBA rating and smart features like Home Connect, this dishwasher is both modern and unobtrusive. The flexible RackMatic system also helps you fit more in every load, from tall glasses to deep pots.
Top Features
- PureDry system for safe, efficient drying
- RackMatic adjustable rack with nine loading positions
- Home Connect smart functionality for customized cleaning
Choosing the Right Tub for Your Dishwasher
So, plastic or stainless steel? Here’s how we help customers at our three Iowa locations decide:
Choose Plastic Tubs if you:
- Want to stick to a tighter budget
- Use your dishwasher occasionally
- Are okay with a little extra noise
- Care more about value upfront than long-term appearance
Choose Stainless Steel Tubs if you:
- Use your dishwasher daily or multiple times a day
- Want a quieter kitchen environment
- Prefer stronger drying performance
- Value long-term reliability and premium features
Remember, the tub material is just one part of the story. Rack design, wash cycles, sensor tech, and brand reliability are all equally important when choosing the right dishwasher.
At Slager Appliances, our experienced team will walk you through the pros and cons of each appliance model. We’ll match your needs to your budget and make sure you leave confident.
➜ Learn More: Which GE Dishwasher Model Is Right for You?
Frequently Asked Questions
Yes. Stainless steel is denser and better insulated, which naturally reduces vibration and motor noise. Most ultra-quiet dishwashers use stainless interiors to achieve sound levels below 45 dB.
They can. Plastic is more porous than stainless steel, so it’s more likely to stain from colorful foods or retain minor odors. Regular cleaning helps, but stainless steel holds up better over time in this area.
Modern plastic tubs are BPA-free and safe for high-heat use. That said, some consumers prefer stainless steel for peace of mind, especially when concerned about chemical exposure.
Plastic tubs generally last 7–10 years, while stainless steel tubs can last 10–15 years or more with proper care. The longevity also depends on the overall build quality of the dishwasher.
If you value quieter operation, better drying, and longer-lasting durability, then yes, the extra cost can be well worth it. For budget-conscious buyers, though, many plastic tub models still perform reliably.
Why Trust Slager Appliances?
Founded over 70 years ago, Slager Appliances is a family-owned, independent appliance retailer based out of Iowa City, IA. Slager has competitive prices and industry knowledge in delivering and installing all major appliance brands. Large enough to offer competitive pricing yet small enough to continue offering the “white glove” service we pride ourselves on, our focus is always on the customer experience — from the first step into a showroom to the purchase transaction to well after your new appliance has been installed.
Whether you need to replace an old appliance, or if you’re remodeling and need an entire kitchen full of new brand-name products we are with you all the way. We will work with you to find a product that fits your needs, budget, and lifestyle.
Shop Plastic or Stainless Steel Tubs at Slager Appliances
Don’t put off until tomorrow what you can do today, and shop appliances online at Slager Appliances. Our friendly experts are always happy to help you find the best plastic or stainless steel dishwasher tub for your kitchen— whether you call us at 319-337-3833, email us, or use our online chat feature. Better yet, stop by any of our Slager Appliances in Iowa City, IA. Visit us today!