When you’re shopping for a new dishwasher, you’re likely to find a wealth of options with various makes, models and designs. One area where there are two main options is the choice of dishwasher tub. Dishwasher tubs are available in plastic or stainless steel, but which one is best?

Plastic Dishwasher Tubs:

Many people worry about plastic dishwasher tubs as they have concerns about whether plastic is safe. While there is cheap, low quality plastic on the market, if your dishwasher has high quality, BPA free, food grade plastic, it is safe to withstand the high temperatures typical with a dishwasher.

While plastic is not as durable as stainless steel and may not be as effective as a stainless steel tub, since it does not get as hot, there are some advantages of plastic. Generally, plastic is a more affordable option, so if you’re on a restricted budget, you may want to consider dishwashers with a plastic tub. Plastic tub dishwashers also tend to be smaller models, which may be a better option if you have limited space. You may also find these models have shorter wash cycles compared to stainless steel models, making them more energy and water efficient. Finally, plastic tubs are also far less likely to get hard water marks or be discolored by stains, which improves the ease of long term maintenance.

Stainless Steel Dishwasher Tubs:

Stainless steel is a more durable material, so it tends to have a longer lifespan. It is easier to clean than many other materials and it can be more sanitary, since it can be heated to higher temperatures for a bacteria free environment.

Stainless steel can also be a good choice if you’re concerned about odors in your kitchen. Stainless steel will not absorb food odors, so you don’t need to worry about your dishes not smelling clean and fresh. It can also provide better noise insulation compared to plastic, so stainless steel tub dishwashers tend to be quieter.

Unfortunately, stainless steel dishwasher tubs can be vulnerable to rust. This is quite a rare occurrence, typically only seen in older dishwashers, but if your dishwasher does develop rust, it will compromise the integrity of the tub and overall appliance. Rust spots will need to be professionally cleaned and treated to prevent spreading.

What is a Hybrid Dishwasher Tub?

A hybrid dishwasher tub offers the best of both worlds. The tub is made of stainless steel, but it has a plastic liner. The tub has stainless steel running up the sides and back, and along the door, but the bottom is plastic. This increases the durability of the tub and improves rust resistance.

Hybrid tub models can operate at higher temperatures, as the higher heat will not damage the tub. They can also enjoy the energy efficiency benefits of traditional models.

What is a Polinox Dishwasher Tub?

Polinox is becoming a more widely adopted material for dishwashers. It is a nickel free stainless steel containing 0.5% or less carbon. Polinox is not only non magnetic, but it has greater resistance to scratching, staining and corrosion.  It can also offer the same heat and odor resistance benefits of a stainless steel tub. For this reason, Polinox is used in high quality dishwasher models.

Dishwashers have a typical lifespan of approximately 10 years, which can be extended with proper care and maintenance. If your dishwasher is approaching the end of its useful lifespan and you’re considering an upgrade, you can explore your options with our online dishwasher collection or speak to one of our home appliance specialists for further advice.