Dampness is just a fact of winter in New Zealand, and during these colder months, damp air can make our homes colder and expose us to allergens. Dehumidifiers are a great way to combat the damp. They remove concentrations of water vapour in the air which makes your home warmer, they make your home healthier by restricting the spread of airborne allergens such as dust mites, mould, and mildew, and since dry air is easier to heat than damp air, they’ll also increase the efficiency of your heating.
Dehumidifiers work best in rooms with a temperature between 10 and 15°C. It’s important to note that dehumidifiers can warm the air slightly, but they should not be considered a source of heat. To get the best balance of warm and dry during winter, use your dehumidifier alongside a heating solution like a heater, wood fire or heat pump.
There are two different types of dehumidifiers:
Compressor Dehumidifiers contain a cold refrigerated surface. Once the damp air inside the room hits the cold surface, the water separates from the air, condenses on the surface, and then drips into a collection bucket. Compressor dehumidifiers become ineffective in climates below 12°C, making them a good option in those warm, wet, humid summer conditions.
Desiccant Dehumidifiers blow damp air through a rotating disk filled with moisture-absorbing material, which separates the moisture from the air. Because the disk is not dependent on temperature to do its job, desiccant dehumidifiers perform better in temperatures below 12°C than compressor models, making them the best option for drying out your home in winter.. The downside is that desiccant models cost significantly more to run than compressor models.
Perform best when placed in the centre of a room with doors and windows shut. We advise vacuuming before switching them on, otherwise the filter can clog up quickly. It is best to use a model which has an adjustable humidistat allowing you to choose from a range of humidity levels. We recommend a humidity level between 30-50% because removing too much water from the air can result in dry skin and itchy eyes.