Particle.news
Download on the App Store

Most Dehumidifiers Need 20–30cm Clearance to Work Efficiently

Which? reports hourly running costs range from about 3p to 17p based on efficiency.

Overview

  • TechRadar advises keeping 8–12 inches (20–30cm) of space around intake and exhaust vents to maintain airflow and performance.
  • Blocked vents make units work harder, reducing moisture removal while increasing energy use and bills.
  • Some newer models are designed to sit flush against a wall, so users should check the manual for model-specific placement guidance.
  • For drying clothes, place the unit in a small closed room, direct airflow at the laundry, and use laundry or boost mode or add a fan to speed evaporation.
  • Which? testing cites around 7p per hour for a Best Buy model, dropping to 3p for the most efficient and rising to about 17p for the least efficient.