Most homemakers operate according to the logic of “the hotter, the more sterile” or “medium temperature is the sweet spot.” However, British physician Dr. Xand van Tulleken analyzed popular washing cycles and came to a surprising conclusion: two cycles we regularly use are not only ineffective but also dangerous for clothes. Let’s explore these cycles and what’s wrong with them.
What actually happens to things at 90°C?
Many believe that the highest temperature setting is a panacea for bacteria, dust mites, and allergens. And it’s true: at 90 degrees Celsius, almost everything dies. But a British doctor warns: “At 90 degrees Celsius, you’re boiling things.” Even durable cotton fades and loses its structure after several such washes , while synthetics, wool, and silk become permanently misshapen. If you regularly wash jeans, T-shirts, or dresses on this setting, be prepared for them to quickly become mere floor rags. The only justifiable use is the occasional washing of thick curtains or bedspreads. According to the doctor, 60 degrees Celsius is quite sufficient for disinfecting bed linens: this will preserve your items and keep your energy bills from skyrocketing.
Why is 40°C the most useless washing machine setting ?
It might seem like 30°C is too cool, 60°C is too hot, and 40°C is just right, but an expert believes otherwise. He calls washing at 40°C “too hot to be cheap and too cold to disinfect.” He means that this temperature doesn’t kill germs and bacteria, and water often fails to remove stubborn stains. Moreover, it uses significantly more energy than 30°C. So, you’re paying for a half-baked result. If you simply need to freshen up an item, feel free to set it at 30°C and use a high-quality detergent. But if you need to kill dirt and germs, choose 60°C rather than the useless middle ground.
How often should I clean my machine if I wash with cold water?
Frequent washing at low temperatures can cause bacteria and mold to accumulate in the machine . Dr. Xand recommends wiping the drum with a cloth soaked in white vinegar once a week and always leaving the door slightly ajar. He also recommends washing the detergent drawer, where mold can accumulate, in the dishwasher. These simple steps will help keep your laundry fresh without using high temperatures.
What temperatures and settings are really gentle on clothes?
A British doctor offers a simple system that won’t ruin your wardrobe and will save you money:
- 60°C is ideal for cotton, linen, calico and bed linen if both cleanliness and disinfection are required.
- 30°C is ideal for synthetics, as well as for any items that are not heavily soiled and simply need to be refreshed.
Special cycles (delicate, hand wash, sports, wool/silk) are the only solution for delicate fabrics and baby clothes. Don’t rely on a universal temperature setting.
