Warning to Brits using dehumidifiers over winter to avoid health issues

As we plummet into winter, many people will start using a dehumidifier in their homes to reduce damp and condensation over the colder months.

Although dehumidifiers have been hailed as a household essential for combating dampness and condensation during winter, health experts have warned that improper use could be doing more harm than good to your health and home.

As many UK households continue to rely on these devices to control indoor humidity, allergy experts at Midland Health, a private GP clinic, have stressed the importance of using them correctly to avoid triggering allergies and respiratory problems.

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Rupa Parmar, director of Midland Health said: “Dehumidifiers can be useful for managing moisture levels but they aren't suitable for everyone or every environment. They can dry out the air, which may not be ideal if you already use gas or electric heating that reduces humidity.

"Excessively dry air can aggravate certain health conditions like pneumonia and may even lead to issues like dry skin or eczema flare-ups. For those with dry coughs or nasal congestion, using a dehumidifier can potentially worsen symptoms.

"It’s also important to stay mindful of hydration if you’re regularly running a dehumidifier in your home. Plus, humidity levels above 60% allow mould and dust mites to thrive, causing issues such as sneezing, coughing, and wheezing.

"On the other end of the scale, too little humidity can lead to dry skin, itchy eyes, and respiratory irritation.”

Here's how to achieve the best results with your dehumidifier.

Five dehumidifier mistakes to avoid this winter

1. Setting incorrect humidity levels: It’s wise to aim for 30-50% relative humidity. However, in colder weather, anything between 30-40% is realistic. Anything outside this range could worsen health problems.
2. Placing it in the wrong spot: Generally, the ground floor is the most effective location for a dehumidifier. After all, high humidity can impact the entire home.
3. Leaving windows and doors open: While it is important to ensure that your home is properly ventilated, remember that letting outside air in will force your dehumidifier to work harder while introducing allergens like pollen. Leaving doors and windows open for 15 minutes is enough to air your home properly.
4. Not emptying or cleaning regularly: It’s important to not leave water in your dehumidifier for more than a day as it can become a breeding ground for mould, triggering allergic reactions or even lung irritation.
5. Neglecting regular cleaning: As with any other surface or device in your home, dust, bacteria, and pollen can build up inside the machine. It’s advisable to clean the bucket and filters weekly to avoid these contaminants recirculating into the air.

Dr Rupa concluded: "When it comes down to it, a well-maintained dehumidifier can protect your health and home but it’s critical to follow the manufacturer's guidance and prioritise cleanliness.