The Guardian’s Filter guide assesses 14 dehumidifiers tested in UK homes, focusing on reducing damp, mould and condensation while keeping running costs low. The review links high indoor humidity to health issues such as asthma and allergies, as well as household problems including musty smells and condensation, making dehumidifiers a practical tool for both comfort and wellbeing.
Each model was tested over several days in real domestic conditions. Performance was measured by tracking humidity reduction, the amount of water extracted, electricity consumption and noise levels, using consumer-grade meters rather than manufacturer figures. Sound quality was also considered, recognising that a low but irritating noise can matter more than raw decibel numbers. Size, ease of handling and everyday usability were factored in alongside headline specifications.
The overall best-rated dehumidifier combined strong extraction, energy efficiency and smart humidity management, allowing it to run only when needed and helping to keep electricity use down. Budget-friendly models were highlighted for offering effective damp control and laundry modes at significantly lower prices, even if they lacked advanced air filtration. Several hybrid units that also purify air stood out for households concerned about dust, allergens and indoor air pollution.
Laundry drying emerged as a key benefit. The Guardian found dehumidifiers to be far cheaper than tumble dryers, with typical running costs of a few pence per hour under the 2025 energy price cap. Quiet operation was another major differentiator, with some models quiet enough for overnight bedroom use. Overall, the guide presents dehumidifiers as a versatile, energy-conscious alternative for managing moisture, drying clothes and improving indoor air quality in UK homes.
Key points
- Fourteen dehumidifiers were tested for humidity reduction, noise and energy use in real homes.
- Typical running costs were measured at around 5–10p per hour under the 2025 price cap.
- The top-rated overall model combined smart humidity control with strong extraction and low noise.
- Several models doubled as air purifiers using HEPA filtration and air-quality sensors.
- Laundry modes consistently dried clothes faster and more cheaply than tumble dryers.