Tumble Dryers Heat Air to Dry Clothes
Tumble dryers heat the air inside them to dry laundry. This prevents clothes and textiles from being ruined due to moisture.

Vented tumble dryers need a vent to release the heat they generate. This is important to ensure your tumble dryer will function efficiently and effectively.
Newer heat-pump operated models do not require a vent however they require a steady supply of cool air in order to function properly. This will make them run more efficiently and reduce the energy consumption.
Low temperatures
The low heat setting on a tumble dryer is designed to protect delicate or sensitive fabrics from damage caused by extreme heat. The setting works by spinning the garments to remove excess water, instead of using the high heat that dryers use to run a spin cycle. You can select the settings for your tumble dryer using the knob to select the program.
Some garments may not be able to stand any kind of heat, so always check the care label on each piece of clothing before putting it in the dryer. Fabrics that are designed for dry cleaning should not be put in the dryer. The heat will cause them to lose their shape and be damaged. Other fabrics can be dried in a tumble dryer, but the temperature must be lower than what is used for cotton clothes.
Low heat or gentle cycle are ideal for delicate fabrics such as sheer, lace, and chiffon fabrics. This setting produces a small amount of heat which helps prevent the fabric from shrinking and warping, and also reduces static. It's also a good choice for workout or activewear clothes made of spandex or other elastic fabrics since they are prone to melt and stretch when dried at higher temperatures.
A permanent press or wrinkle-resistant setting is an additional option to consider. This setting creates a moderate heat level, which is enough for the majority of fabrics to stay dry without inflicting damage. This is a great option for cotton fabric such as cotton bath towels and t-shirts. It can also be used on other cotton items that could otherwise break if heated to high levels.
Some tumble dryers come with the option of a cotton setting' or cotton dry', that is specifically designed for heavy cotton fabrics such as bed sheets and linens. While this setting is suitable for clothes made of cotton that won't easily break however, it is generally recommended to stick to an 'extra delicate' or 'tumble dry low' cycle for these clothes.
Medium heat
The medium heat setting is less intense than the high heat setting, which makes it suitable for a wide range of fabrics. Certain fabrics might shrink if dried at this temperature. So, make sure you check the care label or manufacturer's instructions to determine the temperature recommended.
Using this setting on cotton clothes, towels and bed sheets can ensure that they don't shrink while keeping their texture and color. The setting for medium heat is also safe for most synthetic clothing, such as ones made of polyester. It is not recommended to dry these fabrics using this temperature if the fabric has specific instructions for drying and washing that recommend low or no heat.
Other fabrics, including silk and wool, can be damaged by the extreme temperatures of the medium heat setting. Use a mesh laundry bag and follow the care guidelines on the garment you're using this setting. This will shield delicate fabrics during the tumble drying process. If the fabric contains any embellishments or decoration that can melt or change in quality in the process, you should choose a lower temperature setting.
The high temperature of a tumbler can stretch or damage spandex, as well as other workout clothes. The "sportswear setting" on the majority of appliances is ideal for these items as it helps to keep their shape and texture, while saving energy.
Based on the brand and model of your dryer, the automatic and the timed settings may require a different amount heat than the setting for medium heat. This is because the timed dry option allows you to set how long you'd like your clothes to be in the dryer, while the regular or automatic cycle uses a moisture sensor to determine when they're ready.
Some tumble dryers have an option called 'cotton settings' that can be used to dry cotton clothes, including underwear and t-shirts. This setting is not recommended for delicate fabrics as it could cause them shrink or lose their shape, and harm other types of fabrics.
High temperatures
A majority of tumble dryers have an option for high-heat that is perfect for heavier cotton fabrics. This setting speeds up drying and helps prevent wrinkles, but isn't recommended for delicate or delicately washed clothing since the high temperatures can cause them to shrink, fade or lose their shape. For example wool sweaters or silk dress shouldn't be tumble dried as the high temperatures can cause damage to them. Instead, these fabrics should be air dried to avoid any shrinkage or damage and to maintain their softness and smooth texture.
Another setting that is popular with tumble dryers is the low heat setting, which is ideal for more delicate fabrics. The low heat setting is more gentle on fabrics than the medium temperature setting and can reduce fabric wear. It also helps preserve colors and minimizes fade. It's a great option for knitwear, lingerie or spandex exercise clothing as well as sheer fabrics like lace and chiffon. heat pump tumble dryer may reduce allergens like pet dander and pollen, which can cause irritation or allergies.
The setting for medium heat is ideal for synthetics, shirts and polyester. It's also a great option for sheets, robes, towels, and winter coats. It's crucial to know the labels on these garments as some may require lower temperatures than others.
The heavy-duty cycle is intended for large laundry items that can endure high temperatures. These include blankets, comforters and robes, jeans, towels, and winter coats. This setting is perfect for the majority of fabrics. However it is recommended that if you wish to protect expensive or delicate clothes, it's better to make use of a mesh bag. In addition, some manufacturers recommend using dryer vent filters to ensure that warm air isn't blowing directly onto your clothes.
No heat
Tumble dryers heat the air to move clothes and eliminate moisture. Dry air is either vented outdoors or gathered by a condenser, heat pump or tumbler with external vent.
Each type of tumble dryer has pros and cons. While all three types are effective in drying laundry, it is important to know the differences between low, high and no temperature settings so that you can select the appropriate one for each load of clothes.
The high tumble dry setting is generally the highest temperature setting on your dryer, which is around 125oF (52oC). This is great for items that require additional heating to dry quickly, like cotton sweatshirts or beach towels from your vacation. This is also the ideal setting for drying large items like jeans or heavy sweaters. The high setting is great for bedding and towels, as they can easily handle the hot temperatures.
The setting for low tumble-dry is typically about 48oC (105oF) and is great for delicate, light fabrics such as knitwear or sheers. It is also perfect for workout clothes made of stretchy fabrics such as spandex and Lycra. It is also a great choice for bras or lingerie which are prone to damage due to heat. It can help prevent fraying, fading and stretching.
Some tumble dryers come with an option to not heat. This is usually at room temperature, and is commonly called an air fluff cycle. This is not ideal for the majority of fabrics, since it's designed to refresh and fluff up bedding and other bulky items like winter coats between washes. This method is not recommended for fabrics which cannot stand heat, as they could be damaged or wrinkled due to the lack heat.
Some tumble dryers have an anti-allergy feature that operates at a slightly warmer temperature approximately 110oF (43oC). This is a great option for those who have sensitive skin because it helps remove the dust particles and allergens. It's also an excellent option for those who suffer from respiratory issues. It can reduce wheezing and coughing that can be a sign of asthma and allergies.