A Guide to Dryer Settings and What They Mean

Dryer settings are less intuitive than washing machine settings — the labels vary between manufacturers and countries, and the wrong setting is one of the most common causes of shrinkage, damage to elastic, and premature fabric wear.

This guide explains what each setting actually does and which fabric types need which approach.

Understanding Dryer Heat Settings

High Heat (typically 75–80°C drum temperature)

High heat is appropriate for:

• 100% cotton items (towels, bed sheets, cotton T-shirts)
• Items requiring sanitization (pet bedding, items from illness recovery)
• Heavy denim (jeans, jackets — though low heat preserves color better)

Avoid high heat for: synthetics (polyester, nylon, spandex), wool, silk, down, any item with elastic or rubber components, and blended fabrics where the synthetic content would be damaged.

Medium Heat (typically 55–65°C drum temperature)

The default setting for most households. Appropriate for:

• Mixed cotton/synthetic blends
• Most everyday clothing that doesn't specify low heat
• Permanent press fabrics (reduces wrinkling by ending with a cool-down period)
• Light-to-medium weight cotton

Low Heat (typically 40–50°C drum temperature)

The safest choice for most garments:

• Synthetic fabrics (polyester, nylon) — high heat melts or distorts synthetic fibers
• Activewear and athletic wear
• Any item with elastic, spandex, or rubber components
• Delicate knits and lighter fabrics
• Items where shrinkage is a concern

Air Dry / No Heat (tumble with no heat)

The drum tumbles but no heat is applied — just airflow:

• Wool items that can be machine dried (check care label)
• Down and feather items (restores loft without heat damage)
• Anything that should not be machine dried but needs tumbling to reshape
• Freshening items that don't need full washing (removes wrinkles, odor)

Dryer Cycle Types

Regular / Normal

Continuous heat at the selected temperature throughout the cycle, ending when the timer or moisture sensor triggers completion. Good for heavy, durable items (cotton, denim, towels).

Permanent Press / Wrinkle Guard

Runs at medium heat and finishes with a cool-down period. The cooling prevents wrinkles from setting as the fabric stops tumbling. Ideal for synthetic blends, dress shirts, and items prone to wrinkling.

Delicate / Gentle

Low heat with reduced tumbling intensity. For fine fabrics, knits, and items requiring careful handling. This is the appropriate cycle for items that can technically be machine dried but need protection.

Quick Dry

Higher heat for a shorter cycle — good for small loads of sturdy items when speed matters. Not appropriate for delicates or heat-sensitive fabrics.

Steam Cycle (if available)

Uses steam to relax wrinkles, refresh fabric, and reduce allergens without a full wash. Useful for lightly worn items that don't need washing but need freshening or de-wrinkling. Not all dryers have this feature.

Reading Dryer Symbols on Care Labels

Common Dryer Mistakes

• Using high heat for everything — high heat causes shrinkage in cotton, melts synthetic fibers, degrades elastic, and shortens the life of most fabrics. Use the lowest effective heat
• Over-drying — running the dryer past the point of dryness causes fiber damage from excessive heat exposure. Remove items when dry or slightly damp
• Ignoring the care label dryer symbol — some items look dryer-safe but aren't (e.g., foam-padded bras, items with rubber backing)
• Drying wool in the dryer — unless the care label specifically permits it, wool felts and shrinks dramatically in dryer heat

Frequently Asked Questions

What dryer setting prevents shrinkage?

Low heat is the most important factor in preventing shrinkage. The cool-down period in the permanent press cycle also helps by reducing the heat that causes fibers to contract. For heat-sensitive items like wool or silk, don't use the dryer at all.

What does "permanent press" actually mean?

Permanent press refers to fabrics that have been treated to resist wrinkling. The dryer cycle of the same name supports these fabrics by using medium heat and a cool-down tumble at the end, which prevents wrinkles from being "pressed in" as the drum stops. It's a good default for synthetic blends and dress clothing.

Should I use high or low heat for towels?

Medium to high heat works for cotton towels — the dense fibers can handle it and it helps kill bacteria. However, excessive high heat over time stiffens towel fibers. Medium heat with dryer balls (to create tumbling action that fluffs the fiber loops) tends to produce softer results than high heat alone.

The Bottom Line

Use the lowest effective heat for each load. High heat is only necessary for heavy cotton and items needing sanitization. Medium heat handles most everyday laundry. Low heat is the right choice for synthetics, activewear, and delicates. When in doubt, check the care label's dryer symbol — it's the most reliable guide for a specific garment.

For related laundry guidance, see cold wash vs. warm wash and understanding laundry symbols.