Why You Should Not Keep the Washing Machine Door Closed After Use

In many households, the washing machine runs almost every day, yet certain habits still raise questions. According to manufacturers and technicians, keeping the door shut at all times after use can encourage unpleasant smells, mould and premature wear of the door seal, particularly in damp spaces with limited airflow.

Why does moisture in the washing machine cause bad smells and mould?

A small amount of water remains in the drum, detergent drawer and door seal after every cycle. When the door is left closed, air cannot circulate, drying takes longer and the inside stays warm and damp - ideal conditions for microorganisms that cause unpleasant odours.

The smell of “damp clothes left in storage” usually develops when fungi and bacteria cling to the internal surfaces. The door seal tends to collect detergent, fabric conditioner and dirt, creating the dark marks commonly associated with mould. These can even stain light-coloured clothes during a wash.

How is the door seal damaged when the washing machine door is kept closed?

The door seal prevents leaks and is designed to withstand heat and cleaning products. However, ongoing exposure to standing moisture, combined with poor ventilation, speeds up deterioration and can lead to cracks, staining and reduced elasticity, meaning it may need replacing more often.

When the door stays closed, an internal “microclimate” develops, with high humidity, chemical residues and very little moving air. Over time, this environment can cause several specific problems:

• Weakening of the rubber structure, making splits more likely;
• Heavy mould build-up in the inner folds of the seal;
• Reduced sealing performance, with a risk of small leaks;
• Stains that are difficult to remove, even with specialist products.

Is it better to leave the washing machine door open after use?

Manufacturers advise leaving the door slightly open for a few hours, until the drum and seal have dried completely. This straightforward step improves ventilation, lowers internal humidity and makes odours less likely, which is especially important in enclosed utility rooms or areas without windows.

To support this routine, a few additional measures can keep the washing machine clean and working efficiently for longer. These include drying the seal with a clean cloth, taking out the detergent drawer for regular washing, and avoiding excessive detergent and fabric conditioner, as both leave residues that encourage mould growth.

How can you prevent odours and extend the life of a washing machine?

Avoiding odours comes down to simple habits: do not leave wet laundry forgotten in the drum, ensure the room is well ventilated and inspect the seal regularly. In particularly humid places, open windows, extractor fans or a nearby fan can help the washing machine dry naturally.

It is also useful to run an internal cleaning cycle every one or two months, depending on how often the appliance is used. Follow the manual and use products intended for appliance cleaning. By avoiding leaving the door permanently closed and following these care steps, you are likely to reduce mould, protect the seal and keep the machine operating hygienically and efficiently for more years.