CNN —  

Washing bed sheets seems pretty straightforward, as far as laundry goes. Unfortunately, a lot of people are washing their bedding all wrong — and, compounding the confusion, many of the old rules of laundry we grew up with have changed along the way.

To clear things up, and get some firm guidelines, we spoke with laundry and bedding experts about the right way to wash sheets, duvets and comforters, including the question everyone wants answered: How often are we supposed to be washing those sheets, anyway?

How to wash sheets

Katie Elks, the director of design and product development at Brooklinen, says, “For all sheets, we recommend washing in a cold or cool cycle.” Brian Sansoni, the senior vice president for communications of the American Cleaning Institute, echoes those guidelines, “Most laundry can now be done in cold water. That should be the default.” Sansoni explains that cold water is “usually just as effective, but it’s more sustainable and your sheets will last longer,” because cold water washing reduces wear and tear, as well as fading.

Tide Pods Coldwater Clean ($21.49, originally $24.99; amazon.com)

Tide Pods Coldwater Clean
Amazon
Tide Pods Coldwater Clean

Elks says that people should own at least two sets of sheets to increase longevity. It’s also wise to have more than one sheet set for days when you don’t have time to wash sheets and put them right back on the bed or, more crucially, in case someone soils the sheets and an immediate changing of the bed linens is required.

Brooklinen Classic Core Sheet Set ($126.65, originally $149; brooklinen.com)

Brooklinen Classic Core Sheet Set
Brooklinen
Brooklinen Classic Core Sheet Set

Both Elks and Sansoni recommend separating sheets into light and dark loads, although modern technology has rendered this rule less absolute than it used to be. Because cold water is now the standard for washing, the need to separate textiles by color is less important than separating by fabric type. If you do opt to wash dark and light sheets together, and dye transfer is a concern, use an in-wash color catcher to capture any loose dyes before they can stain lighter-colored items.

Shout Color Catcher Sheets for Laundry, ($4.22; amazon.com)

Shout Color Catcher Sheets for Laundry
Amazon
Shout Color Catcher Sheets for Laundry

However, Sansoni notes that if all of your sheet sets are dark-colored, you may want to “consider a detergent for darker fabric that is intended to reduce fading.”

Woolite Darks Liquid Laundry Detergent ($14.39, originally $16.29; amazon.com)

Woolite Darks Liquid Laundry Detergent
Amazon
Woolite Darks Liquid Laundry Detergent

When it comes to stains, you should pretreat small stains as they occur, and use a laundry booster if all-over staining is an issue. Protein stains like sweat, which are common on sheets, are best treated with an enzymatic stain remover, like Zout, while Shout is best for food and drink stains, like chocolate or coffee.

Zout Triple Enzyme Formula Laundry Stain Remover ($7; amazon.com)

Zout Triple Enzyme Formula Laundry Stain Remover
Amazon
Zout Triple Enzyme Formula Laundry Stain Remover

Shout Laundry Stain Remover, 2-Pack ($16.90; amazon.com)

Shout Laundry Stain Remover, 2-Pack
Amazon
Shout Laundry Stain Remover, 2-Pack

The basics:

  • Wash white sheets separate from dark or very brightly colored sheets.
  • Pretreat stains, or use an in-wash laundry booster for all-over stain remediation.
  • Wash sheets in cold water, as the default.
  • Use the “normal” cycle (also called “regular” or “permanent press”).
  • Do not overstuff the washing machine; sheets need room in the drum of the washer in order for water and detergent to fully penetrate the fibers.

Why make the switch to cold water washing?

One of the biggest shifts in the way that we do laundry is the move to using cold water as the default for all washing. Typically, people have been taught to use hot or warm water for whites and lights, especially for items like sheets and towels. But thanks to advances in both washing machine technology and detergent formulations, hot water is no longer needed in most laundering scenarios.

iStock

Jessica Zinna, a senior scientist for Procter & Gamble, explains why you should consider making the switch to cold water when doing laundry. “Switching to a cold water wash is not only beneficial for your clothes and your wallet, but for the environment, too,” she says. “Up to 90% of the energy used during the laundry process goes towards heating the wash water for warm or hot cycles.”

Moving away from a dependence on hot water washing will also extend the lifespan of your sheets and bedding. “Washing in hot water can be damaging to clothes, sheets, towels, etc., because it can cause dye loss and shrinkage,” Zinna says.

Zinna notes that all Tide detergents are formulated with cold water cleaning chemistry, but she especially recommends the brand’s Hygienic Clean detergent because it contains enzymes and surfactants specially designed to provide superior cleaning in cold water.

Tide Hygienic Clean Heavy 10x Duty Power Pods ($17.03, originally $20.99; amazon.com)

Tide Hygienic Clean Heavy 10x Duty Power Pods
Amazon
Tide Hygienic Clean Heavy 10x Duty Power Pods

Sansoni agrees that cold water should be the default but mentions that there will be times when using hot or warm water is called for. “If someone sleeping in that bed is ill, you may want to wash in warmer water and use a laundry sanitizer,” he says. “If you have asthma or allergies, hot water can help kill dust mites (a common trigger).”

Lysol Laundry Sanitizer Additive ($9.97, originally $10.99; amazon.com)

 Lysol Laundry Sanitizer Additive
Amazon
Lysol Laundry Sanitizer Additive

The basics:

  • Use cold water as the default for all laundry.
  • Use warm or hot water in certain limited scenarios, like when a member of the household is ill.

How to dry sheets

Both Elks and Sansoni recommend line-drying as the ideal way to dry sheets. “If it’s a nice day, drying on a line, out of direct sunlight, is a good option,” Sansoni says.

Honey-Can-Do T-Post Outdoor Line ($42.99; amazon.com)

 Honey-Can-Do T-Post Outdoor Line
Amazon
Honey-Can-Do T-Post Outdoor Line

If outdoor line-drying isn’t an option for you, but your laundry room or another space in the home allows for it, you might also consider indoor line-drying. “For all sheets, we recommend line-drying to preserve original fibers, colors and elasticity,” Elks says.

Yameaer Retractable Clothesline ($25; amazon.com)

Yameaer Retractable Clothesline
Amazon
Yameaer Retractable Clothesline

If machine-drying sheets best fits your laundering needs, Elks and Sansoni say that opting for a low heat and tumble setting is the best choice. Sansoni adds that using the dryer’s moisture sensor feature, if your machine features one, is a good way to avoid overdrying sheets, which can cause fading, shrinkage and a weakening of the fibers.

And, to avoid wrinkling, it’s best to remove sheets immediately from the dryer.

The basics:

  • Line dry sheets or use the low/tumble dry setting on the dryer.
  • Remove sheets from the dryer immediately to avoid wrinkling.

How to wash a comforter

Most comforters and duvets can be machine-washed, though Sansoni reminds us to “read the tag, if still attached, and follow those directions,” because bedding materials and fabrications can vary widely.

Pretreat any stains first, then machine-wash the comforter or duvet using a gentle cycle. Sansoni cautions against a common mistake people make when doing laundry: Over-detergenting. “Read the detergent label to use the right amount, as too much can potentially leave residue.”

If the drum of your home washer is not large enough to fit a duvet, Elks recommends spot treating; stuffing it into a washer that is too small can damage a comforter’s baffle box construction.

“We recommend caring for your comforter with regular fluffing,” Elks says, “and spot cleaning with soft soap, like Woolite.”

Woolite Delicate Care Liquid Laundry Detergent ($13.99; amazon.com)

Woolite Delicate Care Liquid Laundry Detergent
Amazon
Woolite Delicate Care Liquid Laundry Detergent

When a comforter or duvet needs a deeper clean, Elks says, you can take it to the dry cleaner. Another good option when a comforter or duvet needs more than spot treating is to make use of a local laundromat, which will have oversized machines that are plenty large enough to accommodate bulky bedding.

It may surprise you to learn that a comforter or duvet can also be cleaned in the dryer — Elks suggests “using a dryer on the no heat setting to fluff and freshen” a comforter. “Regular fluffing helps keep comforters lofty and plush,” she says.

The basics:

  • Spot treat stains on duvets using a gentle detergent like Woolite.
  • When a deeper cleaning is needed, launder a comforter in an oversized washer or send it out to be dry cleaned.
  • A comforter or duvet can be refreshed by putting it in the dryer on a no-heat setting.

How to dry a comforter

When it comes to drying a comforter or duvet, Sansoni recommends using the dryer on a low setting, and stopping the drying cycle periodically to break up any lumps in the filling. Using dryer balls will also help to fluff the duvet and ensure even distribution of its stuffing.

Whitmor Dryer Balls Blue ($7.73; amazon.com)

Whitmor Dryer Balls Blue
Amazon
Whitmor Dryer Balls Blue

Make sure the duvet is fully dry before putting it away or back on the bed.

The basics:

  • Dry a comforter or duvet on low heat.
  • Use dryer balls to help fluff the stuffing and ensure even distribution.
  • Make sure the comforter is completely dry.

How often to wash sheets

This is the question everyone wants an answer to — how often should people wash their sheets?

“Every 1-2 weeks,” Sansoni says, adding that “weekly is better, especially if you have a dust mite allergy or during the summer when you’re probably sweating more.”

Elks agrees. “We suggest washing your sheets every two weeks and alternating between two different sets to increase longevity. If you sweat a lot in your sleep, washing more often will help keep your sheets feeling fresher.”

iStock

Some other factors to consider when determining how often to wash your sheets:

  • Do you sleep at home every night? Frequent travelers will not need to change sheets as often.
  • Do you have easy access to laundry facilities? If not, you may not do laundry as often, so you may want to have more sheet sets than the two that the experts recommend.
  • Do you shower before you get into bed at night? Do you sleep naked? Are you a heavy sweater? Body soils are the main thing that makes a bedsheet dirty, so people who sleep naked or suffer from night sweats will want to wash more often than people who shower before bed, sleep in pajamas or are cooler sleepers.
  • Do you sleep alone or with a partner, child(ren) or pet(s)? Two (or more) people in a bed means dirtier sheets that will need to be laundered more frequently.

The basics:

  • Wash sheets every 1-2 weeks.
  • Wash sheets more frequently depending on factors like sweating or illness.

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