Dishwasher Extra Dry Setting: How Heat and Fan Drying Work

What the extra dry setting does

The extra dry option is a cycle modifier that tells the dishwasher to put more energy into the drying phase. Instead of ending the cycle as soon as the final rinse drains, the machine raises the temperature inside the tub, runs a fan, or both, to speed evaporation from dish surfaces. The goal is to leave less standing water on items so you do not have to towel them off before putting them away.

Every major brand offers a version of this option, though the name varies: Extra Dry, Extra Dry Plus, PowerDry, Fan Dry, or Heat Dry. The underlying idea is the same. The option does not change how the dishwasher washes. It changes only what happens after the final rinse. You can add it to most normal or auto cycles, and it is especially useful when a load contains plastic containers, which hold heat poorly and dry slowly on their own.

Because the extra dry setting extends the drying phase, it always adds time to the cycle. The exact amount depends on the dishwasher's heating element, whether it has a fan, and the cycle you selected. On a typical built-in model, expect the extra dry option to add anywhere from 10 to 30 minutes to the total cycle time.

Heat drying vs. fan drying

There are two main ways a dishwasher can dry dishes: heat and air movement. Many modern models combine both. Understanding the difference helps you know what your machine is doing when you press the extra dry button.

Heat drying uses a heating element at the bottom of the tub, usually hidden beneath the floor, to warm the air after the final rinse. Warm air holds more moisture than cool air, so the water on dishes evaporates into the air. The moisture then condenses on the cooler stainless steel tub walls and runs down to the drain. This method is effective on glass and ceramic, but it works poorly on plastic because plastic does not absorb heat well. A plastic container can still be wet on top when the cycle ends.

Fan drying uses a small fan, often mounted in the door or at the top of the tub, to pull humid air out of the dishwasher and push drier room air in. Some models route the air through a desiccant cartridge or over a heating element first. Fan drying is generally faster than passive condensation drying and does a better job on plastic items, but it adds noise and energy use, and it requires a vent in the door or a venting path to the outside.

How the option affects cycle time

The extra dry setting adds time because the drying phase takes longer. A normal cycle without extra dry might spend 10 to 15 minutes on drying. With the option enabled, that phase can stretch to 25 to 40 minutes. The dishwasher also needs extra time to heat the air or run the fan long enough to evaporate water from the dishes.

On some models, the extra dry option also boosts the final rinse temperature. A hotter rinse means the dishes are warmer when drying starts, so they dry faster. Heating the water for that hotter rinse adds a few minutes on its own.

The total cycle time with extra dry enabled can reach 2.5 to 3 hours on a heavily soiled load, compared with 1.5 to 2 hours for the same cycle without the option. On a light or quick cycle, the extra dry option adds proportionally more time, because the wash phase is short and the drying phase dominates the total. If you are in a hurry, skip the extra dry option and let the dishes air dry overnight, or use the heated dry only for the top rack where plastic items sit.

Is extra dry worth the tradeoff?

The tradeoff is straightforward: extra dry consumes more energy and adds time, but it delivers dishes that are ready to put away immediately. For some households, that convenience is worth the cost. For others, the standard drying method is enough.

If you frequently load plastic food storage containers, the extra dry option is the most reliable way to avoid pulling out a damp container and wiping it with a towel. Plastic is the hardest material to dry in a dishwasher because it does not retain heat. A fan-assisted extra dry setting is the best solution for mixed loads that include plastics.

If your dishwasher has a condensation drying system and you rarely load plastic items, the extra dry option may be unnecessary. Glass and ceramic plates dry well on their own, especially if you open the door a crack after the cycle ends. The dishwasher vent and condensation drying article explains how passive drying works in more detail.

When to use extra dry

Use the extra dry option when you plan to empty the dishwasher immediately after the cycle ends. If you let the load sit for 30 minutes with the door closed, residual heat continues drying the dishes. If you typically run the dishwasher overnight or while you are at work, the extra dry option is less valuable because you will not be there to unload it right away.

Use it for loads that contain a mix of materials: glass, ceramic, plastic, and stainless steel. The combination of heat and airflow dries all of them more reliably than heat alone. Use it before storing dishes that will go into cabinets, because any remaining water can pool in crevices and leave spots or mineral deposits.

Skip the extra dry option when you run a light or quick cycle for lightly soiled items, or when the load is mostly glass and plates that dry quickly on their own. Skipping the option also saves a little energy, which matters if you run the dishwasher daily. The dishwasher cycles explained guide has more on choosing the right cycle for each load.

Extra dry on countertop and portable models

Countertop and portable dishwashers handle the extra dry setting differently than full-size built-ins. Many compact models use a heating element and a fan, but they have less tub volume and less insulation, so they may need a longer drying phase to reach the same result. Some countertop models do not offer an extra dry option at all, because their heating element already runs at maximum capacity during the wash and rinse phases.

If you are shopping for a compact dishwasher and you know you want dry plastic containers, look for a model that has a fan or a dedicated dry cycle with boosted heat. The best countertop dishwashers and best portable dishwashers guides list models that include drying options.

What to pick for your use

Questions

Does the extra dry setting use more water?

No. The extra dry setting does not add water. It extends the drying phase, which uses heat or a fan but not additional water. Water usage is determined by the wash cycle, not the dry option.

Will extra dry damage plastic containers?

The extra dry setting heats the tub to a higher temperature than a standard dry phase. That heat can soften or warp thin plastic if the item is not marked dishwasher-safe. Place plastic containers on the top rack, where they are farther from the heating element, and check that they are rated for high heat.

Can I add extra dry to any cycle?

Most dishwashers allow you to add the extra dry option to the normal, auto, and heavy cycles. Some models restrict it on the quick or eco cycle because those cycles are designed to minimize energy and time. Check the control panel or the manual for which cycles accept the option.

Why are my plastic dishes still wet even with extra dry?

Plastic is the hardest material to dry because it does not hold heat. The extra dry setting helps, but on some models the heat alone is not enough. A fan-assisted extra dry setting or a model with a mineral-based drying system such as Bosch CrystalDry does a better job on plastic. You can also open the door slightly after the cycle ends to let steam escape.

What is the difference between extra dry and sanitize?

Extra dry focuses only on drying. The sanitize cycle raises the final rinse temperature to a level that kills bacteria, and it also extends the wash phase. Some models combine the two, but you can run sanitize without extra dry and vice versa.

Does the extra dry setting increase the chance of spots on glassware?

No. Spotting is caused by minerals in the water that remain after it evaporates. The extra dry setting does not add minerals. It can actually reduce spotting by evaporating water more quickly, so there is less time for minerals to settle. Using rinse aid is the most effective way to prevent spots.