Ducted air transfer systems are used extensively in cooler-climate and temperate zones throughout the world to transfer heat from one room to one or more other rooms in a domestic dwelling. Within the Asia-Pacific region, New Zealand has traditionally led the way, with Victoria and Tasmania having a strong acceptance of this simple (yet effective!) technology in recent times.

The system works very well with wood heaters and non-ducted "Heat Pumps" (reverse-cycle air conditioners). Typically, these systems effectively only heat only pockets of the house, so air transfer systems help to more equally distribute the air throughout the house, particularly to bedrooms.

Got teenagers in the house that keep their doors closed all of the time - hmmm, gets a bit strong on the nose, yes? Got rooms that you don't use much which get that get musty over time? Notice that condensation builds up on windows in bedrooms, often causing streaks and window frame damage?

All of these things are caused by poor air circulation. We breath out nearly a litre of water per person over the course of a typical night, on top of moisture from showers, clothes dryers, etc... Condensation is essentially caused by moisture in warm air condensing (transforming from a gaseous state into liquid water) onto cooler surfaces, typically glass windows.

How does air transfer systems help to combat condensation? Well, mostly by removing moisture from within the air within rooms. Warm and dry air is directed to the back of rooms via ceiling outlets, which displaces the stale moisture-laden air.

1. They actually reduce your heating-related costs and provide a rapid return-on-investment (payback period), typically 12-24 months.
2. The aim to all-but-eliminate the use of panel heaters in halls/bedrooms, towel warmers, oil heaters, floor heating or expensive-to-use portable heaters.
3. Your heater becomes more efficient as less heat is wasted and other-wise wasted heat is put to use to warm the rest of the house.
4. Living rooms becomes warmer (even though the chill is being take off the rest of the house) due to heat-layer destratification.
5. Rooms increase in temperature by up to 8 degrees (this mostly depends on the type of heater you have and the area to be heated).
6. Window condensation, mould, musty smells and dust mites decrease substantially and, in many cases, eliminated totally.