Condensation can cause problems in the home
What is condensation?
Condensation is the result of water vapour cooling inside a house causing droplets of water to form on cool surfaces e.g. windows.
What makes your home damp?
- Hanging clothes to dry indoors
- Drying clothes in an un-vented drier (3L per load)
- Washing clothes (0.5L per load)
- LPG and unflued gas heaters (up to 1L per hour on the high setting)
- Dishwashing (1L per load)
- Cooking (3L per day)
- Showering and bathing (1-2L per person)
- Wet ground under the house
- Watering plants
- Breathing by the occupants and pets (1L per person per day)
Ways of reducing condensation
- Reduce the production of water vapour e.g. window open in bathroom and door shut, extraction in bathroom and kitchen.
- Keep rooms ventilated, especially the damp ones.
- Keep the home warm during winter, at least 7°C warmer than outside.
- Insulate ceilings, walls and floors
- Use cupboard heaters in problem wardrobes
- Use properly dried timber during construction e.g. kiln dried
- Dry out the air using a dehumidifier
Dehumidifiers remove the moisture from the air and this results in a 2° rise in air temperature.
Points To Consider When Buying a Dehumidifier
- Does it have a humidistat (regulates humidity level in the room)
- Operating noise level
- Number of fan speeds
- How much water can it remove at a given temperature
- Size of water tank
- Ease of use/cleaning of air filter
- Running cost
Suggested Ways of Using a Dehumidifier
- Start by drying out each room thoroughly - open drawers and wardrobes, close windows and door and leave running with humidistat at maximum.
- Set humidistat at humidity level that suits you and find a central place or move around as required.
- Check water tank regularly
- Clean filters on a regular basis
Based on an average 24 hour tariff of 32 cents per kWh
|How many amps is the unit?|
|Amps x Volts||= Watts|
|e.g. 2.6A x 230V||= 598W|
|Watts x cost of 1 unit||= Running Cost|
|.598 x 32 cents||= 19 cents hour max|
|NOTE: If a dehumidifier has a heater this will increase the running cost.|
|e.g. 1600W fan heater||= 51 cents an hour|
|+ 19 cents dehumidifier|
|= 70 cents an hour|
Browse more articles by category:
Here you will find checklists you can print and do an energy efficiency check of your home or farm.
Being better informed about everyday running costs enables us to make better decision about consciously saving energy and money.
As consumers of electricity, we are responsible for maintaining service lines feeding power into our homes and ensuring trees don't come into contact with powerlines, causing a power cut.