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Dehumidifiers Buying Guide

Humidity in a home can be a serious issue. It can result in all sorts of damage, including peeling paint, mouldy clothing, warped wood, and even damaged electronics. Additionally, it comes along with that signature musty smell and feel that can leave you uncomfortable in your own home. For the ideal situation, you need only about 40% humidity and if your house is higher than that, it may be time to consider a dehumidifier.

A dehumidifier works simply. A fan forces air over coils that are cooler than the room temperature. Moisture condenses on those coils and then drips into a container within the unit. Finally, the newly dried air is forced out the back of the dehumidifier.

Usually, you only need a dehumidifier if you don't have air conditioning since properly functioning AC units should do the job. Whether you have an air conditioner or not, if you think that humidity is an issue, then a dehumidifier can be the best option for your comfort and the well-being of your belongings.

Determining Size

Dehumidifiers come with different capacities and you should choose the right one for your space. Otherwise, you may not get the results you want. A small unit may be incapable of handling a large, fairly humid space. To ensure you are choosing the best unit for your home, start by determining how damp the room actually is:

  • Moderate dampness feels uncomfortable. There may be a slight musty odour when it is raining outside. But normally the room smells fine.

  • High dampness will actually feel damp and there may be a musty odour all of the time. You may even find spots of condensation on the floor or walls.

  • If the room is wet, then the whole space will feel extremely damp. Walls and the floor may be wet or appear to sweat. Windows may have seepage.

  • The only time there are extremely damp rooms would be if there are laundry conditions or an extremely wet floor.

You have to consider variables that may affect the humidity or comfort level in a room as well. Consider the following variables when choosing the right dehumidifier:

  • The climate you live in. New Zealand exhibits large variations in terms of climate between the North and the South Islands for example.

  • Where your laundry equipment is located.

  • The number of doors and windows (as well as the efficiency of them).

  • The number of people living in the home.

After you have considered your specific situation, the next step is to choose the right capacity dehumidifier. They range anywhere from 10 pints all the way up to 60 pints. It is always best to choose a unit too large than too small so that you know the space is properly taken care of.

A few examples to help to determine the size of the unit you need to pick include the following:

  • If the room is 500 square feet and only slightly damp, then you need only choose a 10-pint dehumidifier. However, you could go up to 16 pints depending on how damp the room actually is. 
  • If you have a 2,000 square foot space that needs the unit and is only slightly damp, then choose a 26 or 30-pint unit. If the whole space is very damp, you could choose a dehumidifier up to 37 pints for the best results.

Further Features

Most dehumidifiers use basic knob controls, which are fairly simple to use. However, if you would prefer something a little more high tech, then you can choose electronic-controlled models that will even allow you to program them to turn on and off at certain times. Of course, the more controls and options the unit has, the higher in price it will be.


The price of dehumidifiers in NZ will vary greatly depending on the size and capacity of the unit that you choose. Different brands will also affect prices and choosing a top brand like DeLonghi, Dimplex, Mitsubishi, or Evantair may result in higher prices.

Again, remember that if you have a large space that needs dryer air, then you will need to pay a little more in order to get a unit that will properly manage the square footage of your room or home.

You don't have to go out of your way and pay top price for the most expensive, largest unit just to make your home comfortable. Instead, actually take the time and measure the space while considering variables that can affect the humidity in the room.

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